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Old 01-07-2008, 03:03 PM #1
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Default Laser Rod and Frequency-doubling Crystal in One

From optics.org

LASER COMPONENTS is selling DPM modules (diode-pumped microchip), a combination of laser rod and frequency-doubling crystal, for several years.

Here, 0.5mm thick Nd:YVO4 crystals that function as laser rods are joined to 2mm thick KTP doubling crystals. With such a compact structure a frequency-doubled green laser beam of 532nm can be very easily generated by pumping with an 808nm laser diode.

These modules are available with various apertures and in low power and high power versions. At 532nm, the output power of low power designs can reach up to 10mW and the output power of high power designs can exceed 60mW.

In addition to existing types with standard doping of 3%, Nd:YVO4 with 4% are now also available. This results in a lower pumping threshold and, at the same pumping power, an increased output power.

New Laser Rod Material

DPM modules with Nd:GdVO4 laser rods have also been developed. When compared to the Nd:YVO4 laser rods, the following differences can be observed:

•Higher conversion efficiency
•Improved temperature stability
•Greater output power
•Lower lasing threshold
•High absorption coefficients for the pump wavelength
•Large cross section for the stimulated laser emission
•Good thermal conductivity.

In the near future, Nd:GdVO4 could replace the commonly used Nd:YVO4 in numerous applications.

Benefit now from these new developments in the laser crystal market. We will be pleased to send you the current datasheet on our DPM modules and Nd:GdVO4


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Old 01-07-2008, 03:31 PM #2
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Default Re: Laser Rod and Frequency-doubling Crystal in On

What is the cost of a DPM and can one give about 200 to 400 mW green output power with TEC cooling?
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Bluray 140 mW, DJR & New FAV! 8X >500 mW Cree! Made by IgorT Flaminpyro BR &
Red Burner on board, need more ~650 nm 140 mW
8 red Hene's 632.8 nm 2-3mW green HeNe & T/Y to rhd 635nm ~400mW
Rigel SOLD! 3-4 mW I Love it PGL III 593.5nm doing >20 mW! SOLD!
Several Green lasers, EVO PRO Peak ~160 mW & Spyder I Peak 295 mW are my new green favorites!
LG Aquarius -10 & Viasho 473 nm peak ~29 mW WL S3 >60 mW peak 112mW SOLD!
Awesome rhd 451nm 2.1 W SOLD! & 445 >2W by DTR! , Yobresal 1.2W Cree & pen 445 w/ star-cap doing 750 mW!! 500mW 445nm Dorcy Jr. Thanks to Flaminpyro!
Awesome Osram 450nm pocket mini from DTR does about 750mW!

Big T/Y! to builders: IgorT, DTR, john lawson, jayrob, IgorT, whatsupadrian, daguin, and all!
Spiro toy mod w/ side aperture for any pointer Spiro toy in Violet Spiro by yobresal too!
Laser sleds/ diodes sold so far 1180+ A few LPC-826 diodes F.S. $12 ea.


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Old 01-07-2008, 05:24 PM #3
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Default Re: Laser Rod and Frequency-doubling Crystal in On

Quote:
These modules are available with various apertures and in low power and high power versions.
My idea of high power is not 60mw (well thats just me)... regardless the crystals are probably designed for ~50mw and saying that they can produce over 60mw just makes it unlikely for me to ever purchase one, even though I have wanted to build my own green for about a year now :-/
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