Firsts Casio diode hologram @ 445nm

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dave battin

Firsts Casio diode hologram @ 445nm

Post by dave battin »

OH Boy, here we go again! :doh:
Danny Bee

Firsts Casio diode hologram @ 445nm

Post by Danny Bee »

this is only the Beginning ther is more to come stay tune !!!!!!!!!!!
dave battin

Firsts Casio diode hologram @ 445nm

Post by dave battin »

here's a quick video of this hologram showing no banding at all !

Thieu

Firsts Casio diode hologram @ 445nm

Post by Thieu »

Congratulations Dave, this is great news!
dave battin

Firsts Casio diode hologram @ 445nm

Post by dave battin »

Thank you all, it was quite exciting to see these little suckers work! This weekend i plan on doing a few DCG tests,and i am sure it will pass with flying colors!
Dutchelm05

Firsts Casio diode hologram @ 445nm

Post by Dutchelm05 »

Really wonderful stuff Dave.
So the Casio diode is it rated for TEM00 and has a long coherrence length? Or did you get one that was a freak of nature?
Did you build your own heatsink and driver?

Good luck this weekend
Look forward to seeing great stuff as always...

T
dave battin

Firsts Casio diode hologram @ 445nm

Post by dave battin »

In one word "yes"! here is the laser unit im making now it looks to be putting out 50mw with a coherent length of up to 20 inches ................
Attachments
50mw 445nm holography laser
50mw 445nm holography laser
CIMG7066.JPG (91.21 KiB) Viewed 9371 times
Dutchelm05

Firsts Casio diode hologram @ 445nm

Post by Dutchelm05 »

Thanks Dave, very nice work.

Are these lasers rated for like a 1 watt? Did you just turn it down or is this a different model that the one I've seen?

Best of luck,
T
Joe Farina

Firsts Casio diode hologram @ 445nm

Post by Joe Farina »

Nice, Dave.

Hi Tony. I don't mean to upstage Dave's reply, but these diodes are rated at 1 watt. They can't be run nearly that high for our purposes, or else they will have multimode output. So they need a much lower current. In free-running mode (no feedback) I think Wler was able to go up to around 60mW (take a look at Wler's blog, which is linked in the first post on "blue frenzy hits the holographer too." I'm not sure what the output is with microscope-slide feedback (see the recent posts by Thieu, and his blog). Both Wler and Ahmet are hard at work with ECDL versions, which are more complex, but might provide much higher powers.
Dutchelm05

Firsts Casio diode hologram @ 445nm

Post by Dutchelm05 »

Thanks Joe, good to hear from you.
I am excited about Dave's work and hope it is fruitful
What is ECDL versions??
Are you buying one??
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