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 12-18-2008, 06:42 AM #1
Junior Member
 
Join Date: Dec 2008
Posts: 1
Rep Power: 0
kandrey89 is a glorious beacon of lightkandrey89 is a glorious beacon of lightkandrey89 is a glorious beacon of lightkandrey89 is a glorious beacon of lightkandrey89 is a glorious beacon of light
kandrey89 kandrey89 is offline
Junior Member
 
Join Date: Dec 2008
Posts: 1
Rep Power: 0
kandrey89 is a glorious beacon of lightkandrey89 is a glorious beacon of lightkandrey89 is a glorious beacon of lightkandrey89 is a glorious beacon of lightkandrey89 is a glorious beacon of light
Default 100W Laser LED Why Not?

I'm new to lasers, but I was wondering, why couldn't the power of a 100W LED Diode be harnessed and made into a laser through the use of options and what not?

Is the scattering too much, it's not a single crystal that's giving off light, the area of output is too big to be coalesced into any meaningful burning laser, an other reasons? or am I wrong somewhere, please explain!
Attached Thumbnails
100W Laser LED Why Not?-100w_led.jpg  


kandrey89 is offline   Reply With Quote







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







Old 12-18-2008, 09:52 AM #2
Class 2M Laser
 
Join Date: Feb 2008
Posts: 733
Rep Power: 83
hydrogenman15 has a reputation beyond reputehydrogenman15 has a reputation beyond reputehydrogenman15 has a reputation beyond reputehydrogenman15 has a reputation beyond reputehydrogenman15 has a reputation beyond reputehydrogenman15 has a reputation beyond reputehydrogenman15 has a reputation beyond reputehydrogenman15 has a reputation beyond reputehydrogenman15 has a reputation beyond reputehydrogenman15 has a reputation beyond reputehydrogenman15 has a reputation beyond repute
hydrogenman15 hydrogenman15 is offline
Class 2M Laser
 
Join Date: Feb 2008
Posts: 733
Rep Power: 83
hydrogenman15 has a reputation beyond reputehydrogenman15 has a reputation beyond reputehydrogenman15 has a reputation beyond reputehydrogenman15 has a reputation beyond reputehydrogenman15 has a reputation beyond reputehydrogenman15 has a reputation beyond reputehydrogenman15 has a reputation beyond reputehydrogenman15 has a reputation beyond reputehydrogenman15 has a reputation beyond reputehydrogenman15 has a reputation beyond reputehydrogenman15 has a reputation beyond repute
Default Re: 100W Laser LED Why Not?

An led emits incoherent light (aka there waves don't move in line with each other).
You can't focus it like a lasers light.

--hydro15
hydrogenman15 is offline   Reply With Quote
Old 12-18-2008, 10:45 AM #3
diachi's Avatar
Class 4 Laser
 
Join Date: Feb 2008
Location: Yellowknife, NT, Canada
Posts: 8,051
Rep Power: 40345
diachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond repute
Send a message via Skype™ to diachi
diachi diachi is online now
Class 4 Laser
diachi's Avatar
 
Join Date: Feb 2008
Location: Yellowknife, NT, Canada
Posts: 8,051
Rep Power: 40345
diachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond repute
Send a message via Skype™ to diachi
Default Re: 100W Laser LED Why Not?

You can't focus incoherent light to a small point. Also 100W isn't the light output , it's how much power the LED uses.
__________________


405nm | Banggood LT-850 | "5mW" | Review Unit | Review WIP
445nm | Sanwu Laser Pocket Series | 400mW Metered
445nm | NDB7242E Pen Build | 60mW Metered | >>Build Thread<<
450nm | LaserPointerStore - Thor H2 | 1W(?) | Review Unit | >>Review<<
488nm | Spectra Physics 163 Argon | ~30mW Metered
515nm | PL515 Pen Build | 50mW Metered | >>Build Thread<<
520nm | Laserlands 520 | 5mW | Review Unit | 3mW metered | >>Review<<
532nm | Gearbest 303 Pointer | 50mW Metered
532nm | Gearbest JD-850 Pointer | 30mW Metered (I think, need to re-test).
633nm | HeNe | 6mW
633nm | Spectra Physics 155 HeNe | <1mW >>Thread<<
650nm | Sanwu Laser Pocket Series | 200mW Metered
808nm | Melles Griot 532nm Lab Unit | No Crystals >10W | X2



Check out my Reddit Subreddit! >>/r/laserpointers<<

diachi is online now   Reply With Quote
Old 12-18-2008, 11:50 AM #4
Benm's Avatar
Class 4 Laser
 
Join Date: Aug 2007
Location: Netherlands
Posts: 7,442
Rep Power: 19481
Benm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond repute
Benm Benm is online now
Class 4 Laser
Benm's Avatar
 
Join Date: Aug 2007
Location: Netherlands
Posts: 7,442
Rep Power: 19481
Benm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond repute
Default Re: 100W Laser LED Why Not?

Quote:
Originally Posted by hydrogenman15
An led emits incoherent light (aka there waves don't move in line with each other).
You can't focus it like a lasers light.

--hydro15
The main problem is the size of the light emitting area - in a diode laser its in the order of the wavelength, in that LED is absolutely huge. Those little dark areas actually look like individual LED dice.

Quote:
Also 100W isn't the light output , it's how much power the LED uses.
True, but if its a bit efficient, it would be capable of 10W or so optical output power. Still massive, and if all you want to do is burn something, its likely to work given correct optics.
Benm is online now   Reply With Quote
Old 12-18-2008, 03:55 PM #5
Cyparagon's Avatar
Class 4 Laser
 
Join Date: Sep 2007
Location: Wisconsin
Posts: 9,146
Rep Power: 9765
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: 9,146
Rep Power: 9765
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: 100W Laser LED Why Not?

Yeah, it looks like 10x10 1-watt emitters.

LED != laser although you may be able to pump a few lasers with LEDs.
__________________
A problem well stated is a problem half solved.
Cyparagon is online now   Reply With Quote
Old 12-22-2008, 07:55 PM #6
Banned
 
Join Date: Apr 2007
Location: Cupertino CA
Posts: 1,076
Rep Power: 0
Laser_Ben has a reputation beyond reputeLaser_Ben has a reputation beyond reputeLaser_Ben has a reputation beyond reputeLaser_Ben has a reputation beyond reputeLaser_Ben has a reputation beyond reputeLaser_Ben has a reputation beyond reputeLaser_Ben has a reputation beyond reputeLaser_Ben has a reputation beyond reputeLaser_Ben has a reputation beyond reputeLaser_Ben has a reputation beyond reputeLaser_Ben has a reputation beyond repute
Send a message via AIM to Laser_Ben
Laser_Ben Laser_Ben is offline
Banned
 
Join Date: Apr 2007
Location: Cupertino CA
Posts: 1,076
Rep Power: 0
Laser_Ben has a reputation beyond reputeLaser_Ben has a reputation beyond reputeLaser_Ben has a reputation beyond reputeLaser_Ben has a reputation beyond reputeLaser_Ben has a reputation beyond reputeLaser_Ben has a reputation beyond reputeLaser_Ben has a reputation beyond reputeLaser_Ben has a reputation beyond reputeLaser_Ben has a reputation beyond reputeLaser_Ben has a reputation beyond reputeLaser_Ben has a reputation beyond repute
Send a message via AIM to Laser_Ben
Default Re: 100W Laser LED Why Not?

Benm is the only one even close here! :'( :'( :'(

You could make that beam collimated. The problem is when you change the divergence, the diameter gets larger. We have done this with Luxeon Die at work for illumination products where the beam can be made to 10's of miliradians. While this is nice, the beam on the 1mm x 1mm die comes out to be about 3x3 cm. It would be much larger if used on the giant die here.

The only reason that the coherence maters is in the actual lens used. Typical lenses will have different focal points based on the wavelength. To correct this, you have to use a achromatic lens. This is a pair or triplet of lenses that are glued together. It prevents the typical effect of different focal points.

Granted it wouldn't be a laser...
Laser_Ben is offline   Reply With Quote
Old 01-17-2009, 02:45 PM #7
Cereal Eater
 
Join Date: Dec 2007
Location: Argentina
Posts: 6,333
Rep Power: 331
nikokapo has a reputation beyond reputenikokapo has a reputation beyond reputenikokapo has a reputation beyond reputenikokapo has a reputation beyond reputenikokapo has a reputation beyond reputenikokapo has a reputation beyond reputenikokapo has a reputation beyond reputenikokapo has a reputation beyond reputenikokapo has a reputation beyond reputenikokapo has a reputation beyond reputenikokapo has a reputation beyond repute
Send a message via MSN to nikokapo
nikokapo nikokapo is offline
Cereal Eater
 
Join Date: Dec 2007
Location: Argentina
Posts: 6,333
Rep Power: 331
nikokapo has a reputation beyond reputenikokapo has a reputation beyond reputenikokapo has a reputation beyond reputenikokapo has a reputation beyond reputenikokapo has a reputation beyond reputenikokapo has a reputation beyond reputenikokapo has a reputation beyond reputenikokapo has a reputation beyond reputenikokapo has a reputation beyond reputenikokapo has a reputation beyond reputenikokapo has a reputation beyond repute
Send a message via MSN to nikokapo
Default Re: 100W Laser LED Why Not?

I was gonna give you a complete and extensive answer, but you pretty much got it in the first posts.

The thing is that, as the members said, LEDs produce incoherent light, which means that it's photons are not in phase with each other.

( What is 'phase'?: http://en.wikipedia.org/wiki/Phase_(waves) )
(More info about this: http://en.wikipedia.org/wiki/Polarization).


This was explained in some threads in this section, repeated times. If you lurk thru the older threads you will find a better explanation
nikokapo 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


LinkBacks (?)
LinkBack to this Thread: http://laserpointerforums.com/f54/100w-laser-led-why-not-38723.html
Posted By For Type Date
laser 100 w - Virgilio Ricerca Web This thread Refback 08-20-2012 10:21 PM










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 05:11 AM.


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