Hello Guys,
i have already posted inside the LaserPointer Forum. Many of you know it already, however i will try my luck here too.
I designed and build a prototype of a cheap 100mW/700mW 613nm Laser module. It is not a DPSS as you might expect.
Its using the diode thermal wavelength shift to drive a normal red laser diode down to 613nm. I already archived a wavelength of 616nm with a 700mW 638nm sharp Multimode diode.
The laser module can cool the diode really deep to shift the wavelength. I am currently getting -80°C but i am expecting -100°C by using a better tec.
Data:
The module is completely hermetically sealed and uses vacuum insulation. So no special equipment is needed to operate it. Just a normal Tec driver and a Laserdiode driver (a Live Lasersystems ColorDrive for example).
It uses around 60-70W for cooling and laserdiode.
Its quite small with a footprint of only 60x70mm and a hight of 40mm.
There are several options for laser diodes that could be used inside the cryo module:
633nm 100mW SM Ushio diode (around 180USD) -> this would give us the best (lowest) wavelength and beam, however its quite expensive (this would give us 613nm @100mW)
638nm 185mW SM diode (30USD?) -> this is quite cheap, has better power but worse wavelength, would be best for a cheap lumia
638nm 700mW MM diode (30USD?) -> cheap and the most power, worst beam and wavelength but the power may make some people consider it (around 620nm at 700mW)
I also have a comparison screenshot of the 616nm i already archived with a 700mW MM diode that was running at around 200mW. The other diode is a 660nm SM red.
Please dont look to closely at this janky setup, its my prototype. The module will not have the vacuum gauge attached to it in its final form. I also changed the mount for the output window and case lid.
I can get a price brake on the TEC used if i get enough people interested. I dont have a exact price for the complete module as i am currently investigating milling options for the case. I can say that in will be in the range of 500-1500USD depending on the configuration (diode used) and addons (drivers). A kit would be much cheaper but requires you to have a good vacuum pump and soldering skills. However the TEC would be 160USD (excluding shipping and customs) for one pice and 100USD for one if we can get 10.
SO if anyone would be interested in buying a kit or a complete unit, drop me a PM.
Best Regards
Stephan