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Sharp 638nm 185mw pen laser build

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Sharp red is nice diode. It was bright and sharp the beam.
I think it is as good as the 532nm green laser:yh:

output = with G-2 250mw maybe...
Battery = AAA 2 use


















05:30 clock...



I would like red laser with 1W or more to have sharp divergence.
however 185mw diode is darker than ML501P73. :(
multi mode red laser dot is so crazyyyy.... :mad:
but I think it is the best among single-mode red lasers:crackup:
It was good to use two AAA batteries
 

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Yes,i also like pen laser,but don't like white,maybe golden, haha
I think you can put a violet diode in pen host,it will be beautiful
 
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That is right:D. I will do it. but host black gold pen next time. Hmm..... 1.2w pen. i hope good.:undecided:
 

WizardG

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You can build a pen laser with 1 watt+ of output but the duty cycle of such a build will be very low.
 

paul1598419

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Very nice looking beam shots. I like the single mode 638nm diodes. Not an especially big fan of pen builds, but this one seems to look pretty nice and the beam seems quite tight. :yh:
 
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Very nice looking beam shots. I like the single mode 638nm diodes. Not an especially big fan of pen builds, but this one seems to look pretty nice and the beam seems quite tight. :yh:


Sharp single mode 638nm is good!. i think it is better than HL63603TG.
Sharp 30% higher output than HL63603TG:drool:
but it is not 3 Pin diode :crackup:
 

RA_pierce

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Really nice.
I love this diode, too. Great job with your recent builds and welcome!
 

LewDude

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Nicely done!! What kind of driver did you use? Really neat looking area you live in as well - thanks for sharing and take care!
 
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Nicely done!! What kind of driver did you use? Really neat looking area you live in as well - thanks for sharing and take care!


it just Chinese driver. i want use Flex driver next time :p
The Chinese driver was not bad either.
 

paul1598419

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Because the Vf of this red diode is so low. it is reasonable to use a cheap Chinese driver for it. You could even get by with using one meant for 808nm pump diodes for 532nm lasers. That wouldn't work for the
new Sharp single mode diodes. The ones from 470nm to 510nm.
 

Shotgundrums

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I’ve got this one, too. Def one of my favorites. I love red the most. Most of us on the forums have been dreaming of a MM red with ~ m140 type divergence or better. :drool:
Nice beam shots!
SGD:beer:
 
Last edited:

Miya

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M140 divergence.. Nice :D
But i hope PLP520B1 type divergence Red 2w :p
There is no good divergence watt Red... Now
 




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