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 10-27-2014, 05:42 AM #1
Alaskan's Avatar
Class 4 Laser
 
Join Date: Jan 2014
Location: Southwest Asia
Posts: 6,814
Rep Power: 31030
Alaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond repute
Alaskan Alaskan is offline
Class 4 Laser
Alaskan's Avatar
 
Join Date: Jan 2014
Location: Southwest Asia
Posts: 6,814
Rep Power: 31030
Alaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond repute
Default A new way to make laser-like beams using 250x less power

Maybe we will see the emergence of this technology in pointers someday? The technology is too new to produce that kind of power but I'm hoping for advancements to change that.

A new way to make laser-like beams using 250x less power | University of Michigan News


__________________

The forum costs more to run than donations received, if you wish to help click this link: http://laserpointerforums.com/donations.htm

Laser Safety: http://www.laserpointersafety.com/index.html

Sam's Laser FAQ: Sam's Laser FAQ: Welcome Page

RHD's Relative Perceived Brightness Calculator. Compare brightness @nm: http://lsrtools.1apps.com/relativebrightness

To shorten my signature I have moved most of my laser related web links to this forum page, the second post in that thread shows most of my builds... Alaskan's Laser Links: http://laserpointerforums.com/f44/al...ml#post1449395


Sincerely investigate any of these three short quotes as new concepts and you've taken your first step into a larger world:

"I regard consciousness as fundamental. I regard matter as derivative from consciousness..." - Max Planck. "Everything we call real is made of things that cannot be regarded as real" - Neils Bohr. "What we call physical things and events do not exist independently of subjective experience..." - Deepak Chopra.

Each of these three rabbit holes go deep, ending up in the same place.

Useless troll fighting.

Last edited by Alaskan; 10-27-2014 at 05:46 AM.
Alaskan is offline   Reply With Quote







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







Old 10-27-2014, 07:58 AM #2
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: A new way to make laser-like beams using 250x less power

Very cool, thanks for the link. I wonder what exactly this quasi-laser output would look like- maybe somewhere between an LED and a laser? Either way, I bet that it would be be pretty darn near perfect for video projectors, assuming the output wavelength is in 440nm range (unless theres some magical property of this specific process that dictates otherwise ).
crazyspaz is offline   Reply With Quote
Old 10-27-2014, 03:33 PM #3
Alaskan's Avatar
Class 4 Laser
 
Join Date: Jan 2014
Location: Southwest Asia
Posts: 6,814
Rep Power: 31030
Alaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond repute
Alaskan Alaskan is offline
Class 4 Laser
Alaskan's Avatar
 
Join Date: Jan 2014
Location: Southwest Asia
Posts: 6,814
Rep Power: 31030
Alaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond repute
Default Re: A new way to make laser-like beams using 250x less power

Might take ten years to see anything come of this breakthrough, took a long time to get to where we are now.
__________________

The forum costs more to run than donations received, if you wish to help click this link: http://laserpointerforums.com/donations.htm

Laser Safety: http://www.laserpointersafety.com/index.html

Sam's Laser FAQ: Sam's Laser FAQ: Welcome Page

RHD's Relative Perceived Brightness Calculator. Compare brightness @nm: http://lsrtools.1apps.com/relativebrightness

To shorten my signature I have moved most of my laser related web links to this forum page, the second post in that thread shows most of my builds... Alaskan's Laser Links: http://laserpointerforums.com/f44/al...ml#post1449395


Sincerely investigate any of these three short quotes as new concepts and you've taken your first step into a larger world:

"I regard consciousness as fundamental. I regard matter as derivative from consciousness..." - Max Planck. "Everything we call real is made of things that cannot be regarded as real" - Neils Bohr. "What we call physical things and events do not exist independently of subjective experience..." - Deepak Chopra.

Each of these three rabbit holes go deep, ending up in the same place.

Useless troll fighting.
Alaskan is offline   Reply With Quote
Old 10-28-2014, 01:14 AM #4
Cyparagon's Avatar
Class 4 Laser
 
Join Date: Sep 2007
Location: Wisconsin
Posts: 9,119
Rep Power: 7620
Cyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond repute
Cyparagon Cyparagon is online now
Class 4 Laser
Cyparagon's Avatar
 
Join Date: Sep 2007
Location: Wisconsin
Posts: 9,119
Rep Power: 7620
Cyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond repute
Default Re: A new way to make laser-like beams using 250x less power

Quote:
The new prototype requires 250 times less electricity to operate than its conventional counterpart made of the same material.
Standard laser diodes are 10-60% efficient. You cannot possibly get more than "10x less electricity" until the output power has to be less as well.

Basic math says the figure is bullshit.
__________________
A problem well stated is a problem half solved.
Cyparagon is online now   Reply With Quote
Old 10-28-2014, 01:22 AM #5
Banned
 
Join Date: Oct 2014
Location: Maryland, USA
Posts: 1,310
Rep Power: 0
USAbro is infamous around these partsUSAbro is infamous around these partsUSAbro is infamous around these partsUSAbro is infamous around these partsUSAbro is infamous around these partsUSAbro is infamous around these partsUSAbro is infamous around these partsUSAbro is infamous around these parts
USAbro USAbro is offline
Banned
 
Join Date: Oct 2014
Location: Maryland, USA
Posts: 1,310
Rep Power: 0
USAbro is infamous around these partsUSAbro is infamous around these partsUSAbro is infamous around these partsUSAbro is infamous around these partsUSAbro is infamous around these partsUSAbro is infamous around these partsUSAbro is infamous around these partsUSAbro is infamous around these parts
Default Re: A new way to make laser-like beams using 250x less power

Quote:
Originally Posted by Cyparagon View Post
Standard laser diodes are 10-60% efficient. You cannot possibly get more than "10x less electricity" until the output power has to be less as well.

Basic math says the figure is bullshit.
You are right. It's simple. Conversion of energy from 1 type to another always is at least partially inefficient, and this method (electrons to photons) is especially inefficient.
USAbro is offline   Reply With Quote
Old 10-28-2014, 02:31 AM #6
Alaskan's Avatar
Class 4 Laser
 
Join Date: Jan 2014
Location: Southwest Asia
Posts: 6,814
Rep Power: 31030
Alaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond repute
Alaskan Alaskan is offline
Class 4 Laser
Alaskan's Avatar
 
Join Date: Jan 2014
Location: Southwest Asia
Posts: 6,814
Rep Power: 31030
Alaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond repute
Default Re: A new way to make laser-like beams using 250x less power

I wonder how they came up with that figure then.... time to write the author.

Edit: OK I wrote her along with a link to this thread.
__________________

The forum costs more to run than donations received, if you wish to help click this link: http://laserpointerforums.com/donations.htm

Laser Safety: http://www.laserpointersafety.com/index.html

Sam's Laser FAQ: Sam's Laser FAQ: Welcome Page

RHD's Relative Perceived Brightness Calculator. Compare brightness @nm: http://lsrtools.1apps.com/relativebrightness

To shorten my signature I have moved most of my laser related web links to this forum page, the second post in that thread shows most of my builds... Alaskan's Laser Links: http://laserpointerforums.com/f44/al...ml#post1449395


Sincerely investigate any of these three short quotes as new concepts and you've taken your first step into a larger world:

"I regard consciousness as fundamental. I regard matter as derivative from consciousness..." - Max Planck. "Everything we call real is made of things that cannot be regarded as real" - Neils Bohr. "What we call physical things and events do not exist independently of subjective experience..." - Deepak Chopra.

Each of these three rabbit holes go deep, ending up in the same place.

Useless troll fighting.

Last edited by Alaskan; 10-28-2014 at 02:36 AM.
Alaskan is offline   Reply With Quote
Old 10-28-2014, 09:06 PM #7
Alaskan's Avatar
Class 4 Laser
 
Join Date: Jan 2014
Location: Southwest Asia
Posts: 6,814
Rep Power: 31030
Alaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond repute
Alaskan Alaskan is offline
Class 4 Laser
Alaskan's Avatar
 
Join Date: Jan 2014
Location: Southwest Asia
Posts: 6,814
Rep Power: 31030
Alaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond repute
Default Re: A new way to make laser-like beams using 250x less power

Her answer:

HI Chris,

Thanks for writing about this work. Had to check with the researchers here for a refresher to answer your question. Thomas Frost tells me this:


The 250x less power is referring to the threshold of the laser. In a traditional laser, there is a large 'threshold' to lasing so any power put into the system up to that current is effectively wasted, although the laser may be nearly 100% efficient above this 'threshold.' The polariton laser having a very low 'lasing threshold' meaning that you don't have to put much energy in to the system to start get coherent light out. The 10-60% efficiency quoted on the forum is referring to the overall efficiency (Laser power out/input electrical power) which counts the wasted energy below threshold and the potentially near perfect efficiency above threshold. Because polariton 'lasing' occurs due to a different physical phenomenon, what the 250x less power is referring to is that the polariton lasing occurs at 1/250th the current as the photon lasing threshold in the same device.

Nicole

Nicole Casal Moore
Public Relations Rep.
University of Michigan
__________________

The forum costs more to run than donations received, if you wish to help click this link: http://laserpointerforums.com/donations.htm

Laser Safety: http://www.laserpointersafety.com/index.html

Sam's Laser FAQ: Sam's Laser FAQ: Welcome Page

RHD's Relative Perceived Brightness Calculator. Compare brightness @nm: http://lsrtools.1apps.com/relativebrightness

To shorten my signature I have moved most of my laser related web links to this forum page, the second post in that thread shows most of my builds... Alaskan's Laser Links: http://laserpointerforums.com/f44/al...ml#post1449395


Sincerely investigate any of these three short quotes as new concepts and you've taken your first step into a larger world:

"I regard consciousness as fundamental. I regard matter as derivative from consciousness..." - Max Planck. "Everything we call real is made of things that cannot be regarded as real" - Neils Bohr. "What we call physical things and events do not exist independently of subjective experience..." - Deepak Chopra.

Each of these three rabbit holes go deep, ending up in the same place.

Useless troll fighting.
Alaskan is offline   Reply With Quote
Old 10-29-2014, 01:01 AM #8
Cyparagon's Avatar
Class 4 Laser
 
Join Date: Sep 2007
Location: Wisconsin
Posts: 9,119
Rep Power: 7620
Cyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond repute
Cyparagon Cyparagon is online now
Class 4 Laser
Cyparagon's Avatar
 
Join Date: Sep 2007
Location: Wisconsin
Posts: 9,119
Rep Power: 7620
Cyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond repute
Default Re: A new way to make laser-like beams using 250x less power

Nobody operates lasers at threshold, for exactly the reason she stated - it's inefficient. So they clearly used an irrelevant measurement to make a snappy headline and take advantage of those that don't know jack shit about efficiency.

Scumbags.
__________________
A problem well stated is a problem half solved.
Cyparagon is online now   Reply With Quote
Old 10-29-2014, 06:28 PM #9
KrowBar's Avatar
Class 1M Laser
 
Join Date: May 2014
Location: Huntsville, Alabama
Posts: 128
Rep Power: 42
KrowBar has a reputation beyond reputeKrowBar has a reputation beyond reputeKrowBar has a reputation beyond reputeKrowBar has a reputation beyond reputeKrowBar has a reputation beyond reputeKrowBar has a reputation beyond reputeKrowBar has a reputation beyond reputeKrowBar has a reputation beyond reputeKrowBar has a reputation beyond reputeKrowBar has a reputation beyond reputeKrowBar has a reputation beyond repute
KrowBar KrowBar is offline
Class 1M Laser
KrowBar's Avatar
 
Join Date: May 2014
Location: Huntsville, Alabama
Posts: 128
Rep Power: 42
KrowBar has a reputation beyond reputeKrowBar has a reputation beyond reputeKrowBar has a reputation beyond reputeKrowBar has a reputation beyond reputeKrowBar has a reputation beyond reputeKrowBar has a reputation beyond reputeKrowBar has a reputation beyond reputeKrowBar has a reputation beyond reputeKrowBar has a reputation beyond reputeKrowBar has a reputation beyond reputeKrowBar has a reputation beyond repute
Default Re: A new way to make laser-like beams using 250x less power

The headline could just as well read "Researches find new way to make a coherent beam 250x less powerful than a laser" I guess the breakthrough here is in the fact that you can't make a 1 microwatt laser. The "using less power" part of the headline was a poor wording choice that makes most people think that it has something to do with efficiency.
KrowBar is offline   Reply With Quote
Old 11-08-2014, 05:34 AM #10
Class 1M Laser
 
Join Date: Nov 2010
Location: Toronto, Canada
Posts: 174
Rep Power: 291
FutureOne has a reputation beyond reputeFutureOne has a reputation beyond reputeFutureOne has a reputation beyond reputeFutureOne has a reputation beyond reputeFutureOne has a reputation beyond reputeFutureOne has a reputation beyond reputeFutureOne has a reputation beyond reputeFutureOne has a reputation beyond reputeFutureOne has a reputation beyond reputeFutureOne has a reputation beyond reputeFutureOne has a reputation beyond repute
FutureOne FutureOne is offline
Class 1M Laser
 
Join Date: Nov 2010
Location: Toronto, Canada
Posts: 174
Rep Power: 291
FutureOne has a reputation beyond reputeFutureOne has a reputation beyond reputeFutureOne has a reputation beyond reputeFutureOne has a reputation beyond reputeFutureOne has a reputation beyond reputeFutureOne has a reputation beyond reputeFutureOne has a reputation beyond reputeFutureOne has a reputation beyond reputeFutureOne has a reputation beyond reputeFutureOne has a reputation beyond reputeFutureOne has a reputation beyond repute
Default Re: A new way to make laser-like beams using 250x less power

Dammit that real science always gets in the way of the cool "science!"

__________________

2W 9mm diode 445nm in Arctic host - x2
1W Lazerer Rifle 445nm - x1

2W M140 diode in small Mag Light host - x1
Bunch of pen style greenies ranging from 5mW to 50mW x8
5W combo laser thru PBS
FutureOne 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 04:38 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