Laser pointer discussion. Read/write reviews of laser pointers and laser pointer companies. Learn about all types of laser pointers and lasers





Welcome to Laser Pointer Forums! If you are looking for a laser pointer or want to compare different laser pointer companies, you may want to check out the LPF Laser Pointer Company Database. The link will open in a new window for your convenience.








Green Laser Pointers by Category Blue Laser Pointers by Category Red Laser Pointers by Category
Yellow Laser Pointers by Category Violet Laser Pointers by Category Orange Laser Pointers by Category
Top Laser Pointers by Power - 1 Watt+ Top Laser Pointers by Power - 500mW+ Top Laser Pointers by Power - 250mW+
Laser Pointer Database High Power Laser Pointers Laser Pointer Diodes
Laser Technology Laser Pointer Parts Lasers by Wavelength
Top 10 Laser Pointer Companies Laser Pointer Company Database Visible Beam Laser Pointers


One laser store meets all your needs

























Go Back   Laser Pointer Forums - Discuss Laser Pointers > Lasers > Science & Lasers



LPF List of Laser Pointer Companies (link opens new window)



Reply
 
LinkBack Thread Tools Display Modes
Old 12-23-2015, 05:03 AM #33
micheal rosen's Avatar
Class 2M Laser
 
Join Date: Mar 2015
Location: Minneapolis, Minnesota, USA
Posts: 565
Rep Power: 245
micheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond repute
micheal rosen micheal rosen is offline
Class 2M Laser
micheal rosen's Avatar
 
Join Date: Mar 2015
Location: Minneapolis, Minnesota, USA
Posts: 565
Rep Power: 245
micheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond repute
Default Re: Why Do We Have Lasers, But Not 'Star Wars'-Style Lightsabers?

Quote:
Originally Posted by H2Oxide View Post
The second something passes in front of the beam lasing action will cease. So you would get a quick "pulse" that uses all of energy currently resonating within the cavity and then it would would stop all together.
but if it was powerfull enough, maybe it would just burn it out of the way, and continue to lase?


__________________
No, im not ACTUALLY michael rosen, thats why i spelled it micheal... not cause i'm stupid...

638nm HL63193MG @1.2A, S1 lens, 501B, 860mW
532nm 60-160mW HL from laserbtb
515nm 29mw HL-515 laserbtb
488nm JSDU 2214-20SLMD 20mW Argon-Ion
445nm 1300mw
405nm BDR-209 16x @ 0.6A, S1 lens, 501B LED'ed

Laserbee A 2W LPM 1mw resolution.

Future Plans:
NUBMO7E Large Custom Host Build.

I have a good basic understanding of DPSS and gas lasers, so if you have questions, feel free to PM me! I don't know hardly anything about electronics though.
micheal rosen is offline   Reply With Quote







LPF List of Laser Pointer Companies (link opens new window)







Old 12-23-2015, 05:05 AM #34
H2Oxide's Avatar
Class 2M Laser
 
Join Date: Dec 2014
Location: USA, OR
Posts: 969
Rep Power: 5083
H2Oxide has a reputation beyond reputeH2Oxide has a reputation beyond reputeH2Oxide has a reputation beyond reputeH2Oxide has a reputation beyond reputeH2Oxide has a reputation beyond reputeH2Oxide has a reputation beyond reputeH2Oxide has a reputation beyond reputeH2Oxide has a reputation beyond reputeH2Oxide has a reputation beyond reputeH2Oxide has a reputation beyond reputeH2Oxide has a reputation beyond repute
H2Oxide H2Oxide is offline
Class 2M Laser
H2Oxide's Avatar
 
Join Date: Dec 2014
Location: USA, OR
Posts: 969
Rep Power: 5083
H2Oxide has a reputation beyond reputeH2Oxide has a reputation beyond reputeH2Oxide has a reputation beyond reputeH2Oxide has a reputation beyond reputeH2Oxide has a reputation beyond reputeH2Oxide has a reputation beyond reputeH2Oxide has a reputation beyond reputeH2Oxide has a reputation beyond reputeH2Oxide has a reputation beyond reputeH2Oxide has a reputation beyond reputeH2Oxide has a reputation beyond repute
Default Re: Why Do We Have Lasers, But Not 'Star Wars'-Style Lightsabers?

Quote:
Originally Posted by micheal rosen View Post
but if it was powerfull enough, maybe it would just burn it out of the way, and continue to lase?
Maybe, but if you were actually trying to cut through something you would not be able to sustain a population inversion due to the lack of light being reflected back into the medium.
__________________


It's not denial. I'm just very selective about the reality I accept.
H2Oxide is offline   Reply With Quote
Old 12-23-2015, 05:16 AM #35
micheal rosen's Avatar
Class 2M Laser
 
Join Date: Mar 2015
Location: Minneapolis, Minnesota, USA
Posts: 565
Rep Power: 245
micheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond repute
micheal rosen micheal rosen is offline
Class 2M Laser
micheal rosen's Avatar
 
Join Date: Mar 2015
Location: Minneapolis, Minnesota, USA
Posts: 565
Rep Power: 245
micheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond repute
Default Re: Why Do We Have Lasers, But Not 'Star Wars'-Style Lightsabers?

Quote:
Originally Posted by H2Oxide View Post
Maybe, but if you were actually trying to cut through something you would not be able to sustain a population inversion due to the lack of light being reflected back into the medium.
probably. still a fun thought though.
__________________
No, im not ACTUALLY michael rosen, thats why i spelled it micheal... not cause i'm stupid...

638nm HL63193MG @1.2A, S1 lens, 501B, 860mW
532nm 60-160mW HL from laserbtb
515nm 29mw HL-515 laserbtb
488nm JSDU 2214-20SLMD 20mW Argon-Ion
445nm 1300mw
405nm BDR-209 16x @ 0.6A, S1 lens, 501B LED'ed

Laserbee A 2W LPM 1mw resolution.

Future Plans:
NUBMO7E Large Custom Host Build.

I have a good basic understanding of DPSS and gas lasers, so if you have questions, feel free to PM me! I don't know hardly anything about electronics though.
micheal rosen is offline   Reply With Quote
Old 12-23-2015, 05:59 AM #36
micheal rosen's Avatar
Class 2M Laser
 
Join Date: Mar 2015
Location: Minneapolis, Minnesota, USA
Posts: 565
Rep Power: 245
micheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond repute
micheal rosen micheal rosen is offline
Class 2M Laser
micheal rosen's Avatar
 
Join Date: Mar 2015
Location: Minneapolis, Minnesota, USA
Posts: 565
Rep Power: 245
micheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond repute
Default Re: Why Do We Have Lasers, But Not 'Star Wars'-Style Lightsabers?

Quote:
Originally Posted by Ricker View Post
Oh wow, I didn't even realize one could achieve that much power with those. My rookie knowledge of laser technology is not applicable in this theory.
yeah, in the cavities of most gas and crystal lasers, the resonant cavity has TONS of energy moving through it. heres a nice vid to demonstrate that: www.youtube.com/watch?v=lW4Uq_2VPhE

it always surprises me how much energy is in that resonant cavity, considering that HeNes are only like 2-3mW at the very most.

EDIT: oops, kinda double posted... oh well.
__________________
No, im not ACTUALLY michael rosen, thats why i spelled it micheal... not cause i'm stupid...

638nm HL63193MG @1.2A, S1 lens, 501B, 860mW
532nm 60-160mW HL from laserbtb
515nm 29mw HL-515 laserbtb
488nm JSDU 2214-20SLMD 20mW Argon-Ion
445nm 1300mw
405nm BDR-209 16x @ 0.6A, S1 lens, 501B LED'ed

Laserbee A 2W LPM 1mw resolution.

Future Plans:
NUBMO7E Large Custom Host Build.

I have a good basic understanding of DPSS and gas lasers, so if you have questions, feel free to PM me! I don't know hardly anything about electronics though.

Last edited by micheal rosen; 12-23-2015 at 09:53 PM.
micheal rosen is offline   Reply With Quote
Old 12-23-2015, 09:10 PM #37
Ricker's Avatar
Class 2 Laser
 
Join Date: Oct 2015
Location: Bangor, Maine
Posts: 480
Rep Power: 7266
Ricker has a reputation beyond reputeRicker has a reputation beyond reputeRicker has a reputation beyond reputeRicker has a reputation beyond reputeRicker has a reputation beyond reputeRicker has a reputation beyond reputeRicker has a reputation beyond reputeRicker has a reputation beyond reputeRicker has a reputation beyond reputeRicker has a reputation beyond reputeRicker has a reputation beyond repute
Ricker Ricker is online now
Class 2 Laser
Ricker's Avatar
 
Join Date: Oct 2015
Location: Bangor, Maine
Posts: 480
Rep Power: 7266
Ricker has a reputation beyond reputeRicker has a reputation beyond reputeRicker has a reputation beyond reputeRicker has a reputation beyond reputeRicker has a reputation beyond reputeRicker has a reputation beyond reputeRicker has a reputation beyond reputeRicker has a reputation beyond reputeRicker has a reputation beyond reputeRicker has a reputation beyond reputeRicker has a reputation beyond repute
Default Re: Why Do We Have Lasers, But Not 'Star Wars'-Style Lightsabers?

Quote:
Originally Posted by micheal rosen View Post
yeah, in the cavities of most gas and crystal lasers, the resonant cavity has TONS of energy moving through it. heres a nice vid to demonstrate that: www.youtube.com/watch?v=lW4Uq_2VPhE

it always surprises me how much energy is in that resonant cavity, considering that HeNes are only like 2-3mW at the very most.
Wow, that's too cool! Thank you very much for sharing that, and replying to me.
__________________

Safety: Eagle PairŪ 190-540nm & 800-2000nm Laser Safety Goggles
Misc. Hardware:TENMA 35V/5A Variable Power Supply.
FLIR One Thermal Imaging Camera. Fluke 115 True RMS Digial Multimeter. And Much More!



->My Thermal Imaged Lasers Thread<-
->My First Build!<-
NEW! 2/18/16
Ricker is online now   Reply With Quote
Old 12-23-2015, 10:07 PM #38
Pi R Squared's Avatar
Class 3B Laser
 
Join Date: May 2013
Location: Snohomish County Washington, US
Posts: 3,798
Rep Power: 2662
Pi R Squared has a reputation beyond reputePi R Squared has a reputation beyond reputePi R Squared has a reputation beyond reputePi R Squared has a reputation beyond reputePi R Squared has a reputation beyond reputePi R Squared has a reputation beyond reputePi R Squared has a reputation beyond reputePi R Squared has a reputation beyond reputePi R Squared has a reputation beyond reputePi R Squared has a reputation beyond reputePi R Squared has a reputation beyond repute
Pi R Squared Pi R Squared is offline
Class 3B Laser
Pi R Squared's Avatar
 
Join Date: May 2013
Location: Snohomish County Washington, US
Posts: 3,798
Rep Power: 2662
Pi R Squared has a reputation beyond reputePi R Squared has a reputation beyond reputePi R Squared has a reputation beyond reputePi R Squared has a reputation beyond reputePi R Squared has a reputation beyond reputePi R Squared has a reputation beyond reputePi R Squared has a reputation beyond reputePi R Squared has a reputation beyond reputePi R Squared has a reputation beyond reputePi R Squared has a reputation beyond reputePi R Squared has a reputation beyond repute
Default Re: Why Do We Have Lasers, But Not 'Star Wars'-Style Lightsabers?

Quote:
Originally Posted by micheal rosen View Post
yeah, in the cavities of most gas and crystal lasers, the resonant cavity has TONS of energy moving through it. heres a nice vid to demonstrate that: www.youtube.com/watch?v=lW4Uq_2VPhE

it always surprises me how much energy is in that resonant cavity, considering that HeNes are only like 2-3mW at the very most.
There are plenty of HeNe lasers that are 20mW or maybe more. The reason that most here that have them have ones that are from less than 1mW to 3mW is because those are the affordable ones.

https://mi-lasers.com/product/20mw-6...aser-system-2/

Alan
__________________
Keychain 650nm <5mW
Quartet 4-in-1 630-680nm <1mW

AtlasNova 635nm <5mW
MillionAccessories 532nm <5mW broken
M462 462nm one of a kind (in progress)
PLTB450B 450nm 1913mW G2 lens
PL520 520nm 82mW acrylic lens
S06J 12X 405nm 590mW G2 lens
C6 M140 445nm 1.5W 3 element lens
9mm 445nm with G2 lens in a stainless steel host
Radiant Electronics X4 3.7W Laser Power Meter


Everyone please post here: Countries of LPF. Where are you? <link>
___________________________________________
The light that shines twice as bright burns half as long.
Pi R Squared is offline   Reply With Quote
Old 12-23-2015, 10:10 PM #39
micheal rosen's Avatar
Class 2M Laser
 
Join Date: Mar 2015
Location: Minneapolis, Minnesota, USA
Posts: 565
Rep Power: 245
micheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond repute
micheal rosen micheal rosen is offline
Class 2M Laser
micheal rosen's Avatar
 
Join Date: Mar 2015
Location: Minneapolis, Minnesota, USA
Posts: 565
Rep Power: 245
micheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond repute
Default Re: Why Do We Have Lasers, But Not 'Star Wars'-Style Lightsabers?

Quote:
Originally Posted by Pi R Squared View Post
There are plenty of HeNe lasers that are 20mW or maybe more. The reason that most here that have them have ones that are from less than 1mW to 3mW is because those are the affordable ones.

https://mi-lasers.com/product/20mw-6...aser-system-2/

Alan
i meant most HeNe's. some can even get up to 35mW, and i believe i saw a 50mW one once, not sure though.
__________________
No, im not ACTUALLY michael rosen, thats why i spelled it micheal... not cause i'm stupid...

638nm HL63193MG @1.2A, S1 lens, 501B, 860mW
532nm 60-160mW HL from laserbtb
515nm 29mw HL-515 laserbtb
488nm JSDU 2214-20SLMD 20mW Argon-Ion
445nm 1300mw
405nm BDR-209 16x @ 0.6A, S1 lens, 501B LED'ed

Laserbee A 2W LPM 1mw resolution.

Future Plans:
NUBMO7E Large Custom Host Build.

I have a good basic understanding of DPSS and gas lasers, so if you have questions, feel free to PM me! I don't know hardly anything about electronics though.
micheal rosen is offline   Reply With Quote
Old 12-23-2015, 10:12 PM #40
H2Oxide's Avatar
Class 2M Laser
 
Join Date: Dec 2014
Location: USA, OR
Posts: 969
Rep Power: 5083
H2Oxide has a reputation beyond reputeH2Oxide has a reputation beyond reputeH2Oxide has a reputation beyond reputeH2Oxide has a reputation beyond reputeH2Oxide has a reputation beyond reputeH2Oxide has a reputation beyond reputeH2Oxide has a reputation beyond reputeH2Oxide has a reputation beyond reputeH2Oxide has a reputation beyond reputeH2Oxide has a reputation beyond reputeH2Oxide has a reputation beyond repute
H2Oxide H2Oxide is offline
Class 2M Laser
H2Oxide's Avatar
 
Join Date: Dec 2014
Location: USA, OR
Posts: 969
Rep Power: 5083
H2Oxide has a reputation beyond reputeH2Oxide has a reputation beyond reputeH2Oxide has a reputation beyond reputeH2Oxide has a reputation beyond reputeH2Oxide has a reputation beyond reputeH2Oxide has a reputation beyond reputeH2Oxide has a reputation beyond reputeH2Oxide has a reputation beyond reputeH2Oxide has a reputation beyond reputeH2Oxide has a reputation beyond reputeH2Oxide has a reputation beyond repute
Default Re: Why Do We Have Lasers, But Not 'Star Wars'-Style Lightsabers?

Quote:
Originally Posted by Pi R Squared View Post
There are plenty of HeNe lasers that are 20mW or maybe more. The reason that most here that have them have ones that are from less than 1mW to 3mW is because those are the affordable ones.

https://mi-lasers.com/product/20mw-6...aser-system-2/

Alan
Pretty sure the Spectra Physics 125A is rated at 50 mW! (using 633 nm optics of course )

Also I believe the MG 25-LHP-928-249 has a 75 mW label, not sure ho much it actually outputs though.
__________________


It's not denial. I'm just very selective about the reality I accept.

Last edited by H2Oxide; 12-23-2015 at 10:14 PM.
H2Oxide is offline   Reply With Quote
Old 12-24-2015, 11:55 PM #41
crazyspaz's Avatar
Class 3B Laser
 
Join Date: Jul 2012
Location: IN, United States
Posts: 2,864
Rep Power: 1313
crazyspaz has a reputation beyond reputecrazyspaz has a reputation beyond reputecrazyspaz has a reputation beyond reputecrazyspaz has a reputation beyond reputecrazyspaz has a reputation beyond reputecrazyspaz has a reputation beyond reputecrazyspaz has a reputation beyond reputecrazyspaz has a reputation beyond reputecrazyspaz has a reputation beyond reputecrazyspaz has a reputation beyond reputecrazyspaz has a reputation beyond repute
crazyspaz crazyspaz is offline
Class 3B Laser
crazyspaz's Avatar
 
Join Date: Jul 2012
Location: IN, United States
Posts: 2,864
Rep Power: 1313
crazyspaz has a reputation beyond reputecrazyspaz has a reputation beyond reputecrazyspaz has a reputation beyond reputecrazyspaz has a reputation beyond reputecrazyspaz has a reputation beyond reputecrazyspaz has a reputation beyond reputecrazyspaz has a reputation beyond reputecrazyspaz has a reputation beyond reputecrazyspaz has a reputation beyond reputecrazyspaz has a reputation beyond reputecrazyspaz has a reputation beyond repute
Default Re: Why Do We Have Lasers, But Not 'Star Wars'-Style Lightsabers?

Quote:
Originally Posted by micheal rosen View Post
yeah, in the cavities of most gas and crystal lasers, the resonant cavity has TONS of energy moving through it. heres a nice vid to demonstrate that: www.youtube.com/watch?v=lW4Uq_2VPhE

it always surprises me how much energy is in that resonant cavity, considering that HeNes are only like 2-3mW at the very most.

EDIT: oops, kinda double posted... oh well.
Yes but that energy is sausage if something blocks the path in between the mirrors.

Lightsaber=magical energy arc
Laser=finitely powerful

Even the massive CO2 laser once mounted on air force place that could destroy other moving targets wouldn't be the same as a lightsaber. And sticking something inside a resonance cavity would be pointless, because once you block one stream of photons bouncing back and forth, there goes all the power.
crazyspaz is offline   Reply With Quote
Old 12-25-2015, 01:00 AM #42
micheal rosen's Avatar
Class 2M Laser
 
Join Date: Mar 2015
Location: Minneapolis, Minnesota, USA
Posts: 565
Rep Power: 245
micheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond repute
micheal rosen micheal rosen is offline
Class 2M Laser
micheal rosen's Avatar
 
Join Date: Mar 2015
Location: Minneapolis, Minnesota, USA
Posts: 565
Rep Power: 245
micheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond reputemicheal rosen has a reputation beyond repute
Default

Quote:
Originally Posted by crazyspaz View Post
Yes but that energy is sausage if something blocks the path in between the mirrors.

Lightsaber=magical energy arc
Laser=finitely powerful

Even the massive CO2 laser once mounted on air force place that could destroy other moving targets wouldn't be the same as a lightsaber. And sticking something inside a resonance cavity would be pointless, because once you block one stream of photons bouncing back and forth, there goes all the power.
Can't I atleast dream XD

I agree, it would take an absolutely insane amount of energy to blast through things will the resonant cavity energy.
micheal rosen is offline   Reply With Quote
Old 12-25-2015, 04:19 PM #43
Class 1M Laser
 
Join Date: Feb 2009
Posts: 199
Rep Power: 53
Illuminum3415 has a reputation beyond reputeIlluminum3415 has a reputation beyond reputeIlluminum3415 has a reputation beyond reputeIlluminum3415 has a reputation beyond reputeIlluminum3415 has a reputation beyond reputeIlluminum3415 has a reputation beyond reputeIlluminum3415 has a reputation beyond reputeIlluminum3415 has a reputation beyond reputeIlluminum3415 has a reputation beyond reputeIlluminum3415 has a reputation beyond reputeIlluminum3415 has a reputation beyond repute
Illuminum3415 Illuminum3415 is offline
Class 1M Laser
 
Join Date: Feb 2009
Posts: 199
Rep Power: 53
Illuminum3415 has a reputation beyond reputeIlluminum3415 has a reputation beyond reputeIlluminum3415 has a reputation beyond reputeIlluminum3415 has a reputation beyond reputeIlluminum3415 has a reputation beyond reputeIlluminum3415 has a reputation beyond reputeIlluminum3415 has a reputation beyond reputeIlluminum3415 has a reputation beyond reputeIlluminum3415 has a reputation beyond reputeIlluminum3415 has a reputation beyond reputeIlluminum3415 has a reputation beyond repute
Default Re: Why Do We Have Lasers, But Not 'Star Wars'-Style Lightsabers?

Quote:
Originally Posted by VisibleGreen View Post
So how much energy do you think could be stored in a typical AA battery then?
lol.... okay, where do we start. A typical AA as in Zn/MnO2, NIMH, NiCd, NiZn, Li-FeS, LiMnO2, LiCoO2, LiMn2O4, LiFePO4, or LiNiCoAlO2? Different chemistry exhibit different electrical characteristics, all of which can exist in the same physical volume. That is, a cylindrical space measuring 14mm x 50mm
Stored energy cannot be translated to usable energy largely because of three primary obstacles. Internal resistance, Contact resistance, Ambient temperature.

If you don't care for volts, an NIMH AA can happily put out 10A. Not all 14500 batteries are the same, it's like asking, "How many beers can Ted down in one hour?" Who's Ted? XD


On the side of intuition, assuming that you do possess the necessary energy storage as mentioned, how do you stop a beam of light [laser is simply coherent light] halfway even when the medium in which is is traveling possesses little to no absorption abilities?

Something also to think about is that the laser does not have to be continuously on. Most diodes can withstand a little over-current when pulsed as opposed to be operated continuously. The relationship between output and forward current is non-linear, as is the relationship between forward voltage and current. Increasing the drive current to the diode by a factor of two may result in an increase in power greater than a factor of two. The same may hold true for output. However, doubling the current may not double the output, and in fact, above a certain point, light output may even decrease as the internal temperature of the die rises. However, batteries last a lot longer if the laser is only running half the time, say 50% duty cycle. etc.


that's my take on the "most difficult obstacle" in the whole mess.

Last edited by Illuminum3415; 12-25-2015 at 04:32 PM.
Illuminum3415 is offline   Reply With Quote
Old 12-25-2015, 11:51 PM #44
Banned
 
Join Date: May 2011
Posts: 1,065
Rep Power: 0
VisibleGreen has a reputation beyond reputeVisibleGreen has a reputation beyond reputeVisibleGreen has a reputation beyond reputeVisibleGreen has a reputation beyond reputeVisibleGreen has a reputation beyond reputeVisibleGreen has a reputation beyond reputeVisibleGreen has a reputation beyond reputeVisibleGreen has a reputation beyond reputeVisibleGreen has a reputation beyond reputeVisibleGreen has a reputation beyond reputeVisibleGreen has a reputation beyond repute
VisibleGreen VisibleGreen is offline
Banned
 
Join Date: May 2011
Posts: 1,065
Rep Power: 0
VisibleGreen has a reputation beyond reputeVisibleGreen has a reputation beyond reputeVisibleGreen has a reputation beyond reputeVisibleGreen has a reputation beyond reputeVisibleGreen has a reputation beyond reputeVisibleGreen has a reputation beyond reputeVisibleGreen has a reputation beyond reputeVisibleGreen has a reputation beyond reputeVisibleGreen has a reputation beyond reputeVisibleGreen has a reputation beyond reputeVisibleGreen has a reputation beyond repute
Default Re: Why Do We Have Lasers, But Not 'Star Wars'-Style Lightsabers?

Quote:
Originally Posted by Illuminum3415 View Post
lol.... okay, where do we start. A typical AA as in Zn/MnO2, NIMH, NiCd, NiZn, Li-FeS, LiMnO2, LiCoO2, LiMn2O4, LiFePO4, or LiNiCoAlO2? Different chemistry exhibit different electrical characteristics, all of which can exist in the same physical volume. That is, a cylindrical space measuring 14mm x 50mm
Stored energy cannot be translated to usable energy largely because of three primary obstacles. Internal resistance, Contact resistance, Ambient temperature.

If you don't care for volts, an NIMH AA can happily put out 10A. Not all 14500 batteries are the same, it's like asking, "How many beers can Ted down in one hour?" Who's Ted? XD


On the side of intuition, assuming that you do possess the necessary energy storage as mentioned, how do you stop a beam of light [laser is simply coherent light] halfway even when the medium in which is is traveling possesses little to no absorption abilities?

Something also to think about is that the laser does not have to be continuously on. Most diodes can withstand a little over-current when pulsed as opposed to be operated continuously. The relationship between output and forward current is non-linear, as is the relationship between forward voltage and current. Increasing the drive current to the diode by a factor of two may result in an increase in power greater than a factor of two. The same may hold true for output. However, doubling the current may not double the output, and in fact, above a certain point, light output may even decrease as the internal temperature of the die rises. However, batteries last a lot longer if the laser is only running half the time, say 50% duty cycle. etc.


that's my take on the "most difficult obstacle" in the whole mess.
I meant if we could put electrons directly into a cylinder shape of a typical AA sized battery. Like how much could be compressed?
VisibleGreen is offline   Reply With Quote
Old 12-27-2015, 02:32 AM #45
Class 1M Laser
 
Join Date: Feb 2009
Posts: 199
Rep Power: 53
Illuminum3415 has a reputation beyond reputeIlluminum3415 has a reputation beyond reputeIlluminum3415 has a reputation beyond reputeIlluminum3415 has a reputation beyond reputeIlluminum3415 has a reputation beyond reputeIlluminum3415 has a reputation beyond reputeIlluminum3415 has a reputation beyond reputeIlluminum3415 has a reputation beyond reputeIlluminum3415 has a reputation beyond reputeIlluminum3415 has a reputation beyond reputeIlluminum3415 has a reputation beyond repute
Illuminum3415 Illuminum3415 is offline
Class 1M Laser
 
Join Date: Feb 2009
Posts: 199
Rep Power: 53
Illuminum3415 has a reputation beyond reputeIlluminum3415 has a reputation beyond reputeIlluminum3415 has a reputation beyond reputeIlluminum3415 has a reputation beyond reputeIlluminum3415 has a reputation beyond reputeIlluminum3415 has a reputation beyond reputeIlluminum3415 has a reputation beyond reputeIlluminum3415 has a reputation beyond reputeIlluminum3415 has a reputation beyond reputeIlluminum3415 has a reputation beyond reputeIlluminum3415 has a reputation beyond repute
Default Re: Why Do We Have Lasers, But Not 'Star Wars'-Style Lightsabers?

Quote:
Originally Posted by VisibleGreen View Post
I meant if we could put electrons directly into a cylinder shape of a typical AA sized battery. Like how much could be compressed?

In that case It would probably be close to a supercap/MLCC that fit the dimensions of an AA battery
Illuminum3415 is offline   Reply With Quote
Reply





Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On











Loading








Green Laser Pointers by Category Blue Laser Pointers by Category Red Laser Pointers by Category
Yellow Laser Pointers by Category Violet Laser Pointers by Category Orange Laser Pointers by Category
Top Laser Pointers by Power - 1 Watt+ Top Laser Pointers by Power - 500mW+ Top Laser Pointers by Power - 250mW+
Laser Pointer Database High Power Laser Pointers Laser Pointer Diodes






Privacy Policy | Advertising Disclaimer | Terms of Use


 


All times are GMT. The time now is 04:35 PM.


Powered by: vBulletin
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO
Privacy Policy | Advertising Disclaimer | Terms of Use
Copyright (C) 2017 Laser Pointer Forums, LLC