Old 02-08-2018, 12:38 AM #33
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Default Re: Infrared laser pointers?

With butter, salt and pepper?


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Divergence to spot size calc: - 1 mRad is about .057 degrees which expands to be ~very~ roughly ~10% the diameter of the moon or sun at their distances.

Divergence Calculator: pseudonomen137's JScript mRad Calculator - Measure your lasers beam dia. at 1 foot & then 20'.

Online calc. to determine spot intensity at different mRad's & powers: http://tinyurl.com/divergence-calculator

Laser Power Density Calculator: Laser Power Density Calculator - Ophir

Build a beam expander to reduce divergence: http://tinyurl.com/BeamExpander

University YAG Project The Professor's Homebuilt Lasers Site - YAG Lasers

YAG Power Calc. Laser Peak Power Calculator - Ophir

Angular Size Calculator; use with diode angle of radiation spec. for lens dia. at FL: Angular Size Calculator

RHD's Relative Brightness vs Wavelength Calc: https://tinyurl.com/RHD-brightness

High Current Pulse Diode Drivers: https://tinyurl.com/ya7whuk3
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Old 02-08-2018, 01:37 AM #34
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Default Re: Infrared laser pointers?

Quote:
Originally Posted by rstevens View Post
I found an infrared laser on amazon, it looks like this is AC, though (standard wall plug). I realize its meant for lab/ testing, etc, but thats not what Im going to use it for.

This is the laser...https://www.amazon.com/Focusable-300...MAHA4J03QMG2JT


Doe this look like it would work for my purposes? I think I may need a heatsink as it doesnt look like it has one.

It didnt mention, but a rough estimate, how far would this laser reach?
You don't even comprehend an Amazon listing for an IR Line Laser much less the use of any laser responsibly.
You are an accident looking for a place to happen.

Stop posting proof you don't use the brains you were born with. Everybody "gets it" already.

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Old 02-08-2018, 01:11 PM #35
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Default Re: Infrared laser pointers?

300 mW of completely invisible laser radiation in the hands of a newb....

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Old 02-08-2018, 09:06 PM #36
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Default Re: Infrared laser pointers?

That laser produces a line, not a dot. It is totally inappropriate for signaling aliens or whatever lives in the clouds.
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Old 02-08-2018, 09:32 PM #37
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Default Re: Infrared laser pointers?

With the recent disclosure by the U.S. government which has started, there may be a lot more folk showing up here wanting lasers to signal ET with.
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Divergence to spot size calc: - 1 mRad is about .057 degrees which expands to be ~very~ roughly ~10% the diameter of the moon or sun at their distances.

Divergence Calculator: pseudonomen137's JScript mRad Calculator - Measure your lasers beam dia. at 1 foot & then 20'.

Online calc. to determine spot intensity at different mRad's & powers: http://tinyurl.com/divergence-calculator

Laser Power Density Calculator: Laser Power Density Calculator - Ophir

Build a beam expander to reduce divergence: http://tinyurl.com/BeamExpander

University YAG Project The Professor's Homebuilt Lasers Site - YAG Lasers

YAG Power Calc. Laser Peak Power Calculator - Ophir

Angular Size Calculator; use with diode angle of radiation spec. for lens dia. at FL: Angular Size Calculator

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Old 02-09-2018, 01:29 AM #38
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Default Re: Infrared laser pointers?

It seems like a really unlikely and inefficient way to potentially communicate with (as of right now) hypothetical aliens. Using a beam of light that requires line-of-sight and is easily blocked by atmospheric conditions doesn't really seem like an ideal choice for a highly advanced galaxy traversing race of beings.
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Old 02-09-2018, 01:50 AM #39
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Default Re: Infrared laser pointers?

I believe a lot of the guys wanting to talk to ET are mostly disillusioned souls hoping for intelligent life in the universe, human beings aren't so smart when it comes to the important things, like not building nukes which could wipe us all out. i don't know if a laser would really get the attention of a hypothetical alien anyway, those types are only hypothetical - our culture is still a mix of those who think they are coming here and those who do not, some who are afraid to put on their tin hats and admit they too consider it a reality, but in time i think this will shake out to where we won't need tin hats to talk about it.
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Attention new brothers of the collimated light!

Newbie advice: Please take the time to first make an introduction in the Welcome section before posting questions: - https://laserpointerforums.com/f37


Divergence to spot size calc: - 1 mRad is about .057 degrees which expands to be ~very~ roughly ~10% the diameter of the moon or sun at their distances.

Divergence Calculator: pseudonomen137's JScript mRad Calculator - Measure your lasers beam dia. at 1 foot & then 20'.

Online calc. to determine spot intensity at different mRad's & powers: http://tinyurl.com/divergence-calculator

Laser Power Density Calculator: Laser Power Density Calculator - Ophir

Build a beam expander to reduce divergence: http://tinyurl.com/BeamExpander

University YAG Project The Professor's Homebuilt Lasers Site - YAG Lasers

YAG Power Calc. Laser Peak Power Calculator - Ophir

Angular Size Calculator; use with diode angle of radiation spec. for lens dia. at FL: Angular Size Calculator

RHD's Relative Brightness vs Wavelength Calc: https://tinyurl.com/RHD-brightness

High Current Pulse Diode Drivers: https://tinyurl.com/ya7whuk3

Last edited by Alaskan; 02-09-2018 at 05:59 AM. Reason: added ly to most
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Old 02-09-2018, 05:54 AM #40
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Default Re: Infrared laser pointers?

Quote:
Originally Posted by rstevens View Post
Ive been looking around for an infrared laser pointer, and am somewhat confused. Ive read other threads from people saying the relatively cheap ones available online are nowhere close to being as powerful as they are advertised, but there have been studies done that say these cheap lasers are MUCH more powerful than they are advertised, so Im not sure which is correct.

Im also looking for any advice as to the best place to order an infrared laser pointer, all the ones Ive been looking at seem to be coming from China, so not sure how that works.

thanks!

Just my 2 cents:

Even 5 mW IR laser is not safe - it is out of human spectre perception, therefore no blink reflex protection. I highly recommend OP to get some red (like 650 nm) visible laser pointer <5 mW as first starter instead of IR. Just for safety reasons. There is no need to mess with IR laser without experience with lasers - what if there is an unintended reflection at close distance? What if laser is on and OP is not aware and crosses the beam with eyes? What if someone else is injured? Too much risk with potentially severe consequences for rest of life -> not worth.
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Old 02-09-2018, 05:59 AM #41
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Default Re: Infrared laser pointers?

Eh, I really think this was thread was created as a joke anyway.
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Divergence to spot size calc: - 1 mRad is about .057 degrees which expands to be ~very~ roughly ~10% the diameter of the moon or sun at their distances.

Divergence Calculator: pseudonomen137's JScript mRad Calculator - Measure your lasers beam dia. at 1 foot & then 20'.

Online calc. to determine spot intensity at different mRad's & powers: http://tinyurl.com/divergence-calculator

Laser Power Density Calculator: Laser Power Density Calculator - Ophir

Build a beam expander to reduce divergence: http://tinyurl.com/BeamExpander

University YAG Project The Professor's Homebuilt Lasers Site - YAG Lasers

YAG Power Calc. Laser Peak Power Calculator - Ophir

Angular Size Calculator; use with diode angle of radiation spec. for lens dia. at FL: Angular Size Calculator

RHD's Relative Brightness vs Wavelength Calc: https://tinyurl.com/RHD-brightness

High Current Pulse Diode Drivers: https://tinyurl.com/ya7whuk3
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Old 02-09-2018, 03:52 PM #42
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Default Re: Infrared laser pointers?

Yeah, Alaskan, I hope so. But if it was not, it is better to have this information for OP as well as others not aware. Still I see jokes related to safety rules breaking as stupid. We cannot know what weak mind could follow that and get injured or injure someone. No need to make hobby more regulated than it is now.
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Old 02-09-2018, 04:27 PM #43
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Default Re: Infrared laser pointers?

It turned into an ET thread with his comments why he wanted it, that's what I meant by joke, not the safety aspect that is no joke.
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Attention new brothers of the collimated light!

Newbie advice: Please take the time to first make an introduction in the Welcome section before posting questions: - https://laserpointerforums.com/f37


Divergence to spot size calc: - 1 mRad is about .057 degrees which expands to be ~very~ roughly ~10% the diameter of the moon or sun at their distances.

Divergence Calculator: pseudonomen137's JScript mRad Calculator - Measure your lasers beam dia. at 1 foot & then 20'.

Online calc. to determine spot intensity at different mRad's & powers: http://tinyurl.com/divergence-calculator

Laser Power Density Calculator: Laser Power Density Calculator - Ophir

Build a beam expander to reduce divergence: http://tinyurl.com/BeamExpander

University YAG Project The Professor's Homebuilt Lasers Site - YAG Lasers

YAG Power Calc. Laser Peak Power Calculator - Ophir

Angular Size Calculator; use with diode angle of radiation spec. for lens dia. at FL: Angular Size Calculator

RHD's Relative Brightness vs Wavelength Calc: https://tinyurl.com/RHD-brightness

High Current Pulse Diode Drivers: https://tinyurl.com/ya7whuk3
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Old 02-09-2018, 04:39 PM #44
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Default Re: Infrared laser pointers?

Allright, my misunderstanding. No prob.
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Old 02-09-2018, 05:11 PM #45
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Default Re: Infrared laser pointers?

This thread is a typical LPF response to newbies interested in IR pointers, but then the OP decided to ramp it up more by letting us know why he wanted it, in so many words; to flash ET. After that I didn't think this guy really wanted an IR laser, the thread all probably a tin hat made up spoof from the start, this thread something our old buddy VG would likely create, as he particularly liked to poke fun at this subject. I suppose it is possible he was legit because there are people using IR lasers to point at UFO's in the sky hoping for a free ride or for what they believe are extra terrestrial craft to come closer and give a show to put on YouTube. Good thing IR, I don't think IR lasers are a hazard to distant aircraft due to their high divergence, far better to use high mRad diverging IR pointers than flashing unknown flying objects with tight beamed green lasers.
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Attention new brothers of the collimated light!

Newbie advice: Please take the time to first make an introduction in the Welcome section before posting questions: - https://laserpointerforums.com/f37


Divergence to spot size calc: - 1 mRad is about .057 degrees which expands to be ~very~ roughly ~10% the diameter of the moon or sun at their distances.

Divergence Calculator: pseudonomen137's JScript mRad Calculator - Measure your lasers beam dia. at 1 foot & then 20'.

Online calc. to determine spot intensity at different mRad's & powers: http://tinyurl.com/divergence-calculator

Laser Power Density Calculator: Laser Power Density Calculator - Ophir

Build a beam expander to reduce divergence: http://tinyurl.com/BeamExpander

University YAG Project The Professor's Homebuilt Lasers Site - YAG Lasers

YAG Power Calc. Laser Peak Power Calculator - Ophir

Angular Size Calculator; use with diode angle of radiation spec. for lens dia. at FL: Angular Size Calculator

RHD's Relative Brightness vs Wavelength Calc: https://tinyurl.com/RHD-brightness

High Current Pulse Diode Drivers: https://tinyurl.com/ya7whuk3
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Old 02-09-2018, 05:27 PM #46
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Default Re: Infrared laser pointers?

To be honest I use The Beast to deter extraterrestial spacecrafts. Have you seen any recently? I did not. It is thanks to me playing with that Optotronics jewel.
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LPF thread: Radim's Laserpainting Art, Complexity Philosophy and The Surreal World
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Old 02-09-2018, 05:48 PM #47
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Default Re: Infrared laser pointers?

I've seen things I had to attribute to being aircraft of some type far beyond our technological capabilities, three times now, but do I really know what they were beyond that idea? Nope.
__________________

Attention new brothers of the collimated light!

Newbie advice: Please take the time to first make an introduction in the Welcome section before posting questions: - https://laserpointerforums.com/f37


Divergence to spot size calc: - 1 mRad is about .057 degrees which expands to be ~very~ roughly ~10% the diameter of the moon or sun at their distances.

Divergence Calculator: pseudonomen137's JScript mRad Calculator - Measure your lasers beam dia. at 1 foot & then 20'.

Online calc. to determine spot intensity at different mRad's & powers: http://tinyurl.com/divergence-calculator

Laser Power Density Calculator: Laser Power Density Calculator - Ophir

Build a beam expander to reduce divergence: http://tinyurl.com/BeamExpander

University YAG Project The Professor's Homebuilt Lasers Site - YAG Lasers

YAG Power Calc. Laser Peak Power Calculator - Ophir

Angular Size Calculator; use with diode angle of radiation spec. for lens dia. at FL: Angular Size Calculator

RHD's Relative Brightness vs Wavelength Calc: https://tinyurl.com/RHD-brightness

High Current Pulse Diode Drivers: https://tinyurl.com/ya7whuk3
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Old 02-10-2018, 03:18 PM #48
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Default Re: Infrared laser pointers?

Quote:
Originally Posted by Alaskan View Post
This thread is a typical LPF response to newbies interested in IR pointers, but then the OP decided to ramp it up more by letting us know why he wanted it, in so many words; to flash ET. After that I didn't think this guy really wanted an IR laser, the thread all probably a tin hat made up spoof from the start, this thread something our old buddy VG would likely create, as he particularly liked to poke fun at this subject. I suppose it is possible he was legit because there are people using IR lasers to point at UFO's in the sky hoping for a free ride or for what they believe are extra terrestrial craft to come closer and give a show to put on YouTube. Good thing IR, I don't think IR lasers are a hazard to distant aircraft due to their high divergence, far better to use high mRad diverging IR pointers than flashing unknown flying objects with tight beamed green lasers.
I am legit, it is my first time on here. but I have realized I need to learn more about IR and lasers in general before going off and buying one or making one. Im going to spend some time reading up on these things before I do anything.

The experiment I mentioned is also legit, Im not hoping for a free ride or a show, Im more interested in learning if they are man-made or something else and their purpose for coming to this area numerous times.

If you do not believe me, take an IR camera and point it at the sky for an extended period (night and daytime) and see for yourself.

Last edited by rstevens; 02-10-2018 at 03:21 PM.
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