Old 07-29-2008, 08:00 PM #1
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Default Laser Diodes collimated without lenses

A new article in EEtimes reports that Harvard University has developed a method to produce collimated light from a laser diode without any lenses.

This could be very interesting!

http://www.eetimes.com/showArticle.j...leID=209800332


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Old 07-29-2008, 08:04 PM #2
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Default Re: Laser Diodes collimated without lenses

Already posted by Petrovski I believe in the Science section. Very interesting/beneficial to enthusiasts nonetheless though! Zero optic loss


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Old 07-29-2008, 10:45 PM #3
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Default Re: Laser Diodes collimated without lenses

wow that is awsome how that works...
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Old 07-29-2008, 11:41 PM #4
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Default Re: Laser Diodes collimated without lenses

but now there are more chances the diode can get harmed I'm guessing. water, dust, etc.. at least the lens could provide somewhat protection against that.t I wonder how this would work..
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Old 07-30-2008, 12:18 AM #5
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Default Re: Laser Diodes collimated without lenses

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Originally Posted by mikeeey
but now there are more chances the diode can get harmed I'm guessing. water, dust, etc.. at least the lens could provide somewhat protection against that.t I wonder how this would work..
Well, it seems the big application would be for "communications lasers". Perhaps some use in pumping and whatnot, but its not the type of thing that's gunna go in a pointer. Collimating the beam at that close a range may be very beneficial for those tasks, but if you stuck it in a pointer you'd think it wasn't collimated - remember that beam diameter is inversely proportional to divergence and vice versa
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Old 07-30-2008, 12:50 AM #6
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Default Re: Laser Diodes collimated without lenses

but maybe if they collimated at a smaller beam diameter then it would be easier to re collimate it and get it to a great divergence with small beam diameter
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Old 07-30-2008, 01:05 AM #7
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Default Re: Laser Diodes collimated without lenses

Quote:
Originally Posted by Maven
but maybe if they collimated at a smaller beam diameter then it would be easier to re collimate it and get it to a great divergence with small beam diameter
You can't get a great divergence with a small beam diameter unfortunately.
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