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Custom made Copper Chloride Laser (CuCl)

Laserbuilder

Active member
Joined
Dec 4, 2016
Messages
183
Points
43
Some time ago I visited my fellow glassblower and he made this laser tube for me from fused quartz. It has two side arms for placing copper halide in them an electrodes taken from linear flashlamps. I placed then the copper chloride that had unknown purity and quality. It had already changed colour to green, it indicated that CuCl partially turned in CuCl2. The active part of the tube with the side arms is surrounded by ceramic wool for thermal insulation. The active medium is 20 cm long and 12 mm wide. Anyway, I attached the vacuum pump and neon supply to the nipples of the tube set the neon flow at 10-15 Torr pressure and energised it with my "Lightsaber" CVL power unit. The copper chloride de-watered quickly and after warm up I saw unexpectidly bright superradiant lasing. The input power was around 1 kW with PRR 12 kHz. There was no special double-pulse timing, only continiously following pulses with high repetition rate. The optical cavity was absent. At these conditions the lasing power I would estimate about several hundreds of mW, like 100-200. The spot was too wide to be tightly focused, but I felt it quite hot on my skin.
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paul1598419

Well-known member
Joined
Sep 20, 2013
Messages
17,249
Points
113
Hey, it's been awhile. Nice to see you posting again. Great looking tube and excellent luck with the CuCl. I always enjoy looking at your builds.
 

mojo_1234

Active member
Joined
May 1, 2009
Messages
182
Points
28
impressive! very impressive! how you've managed to achieve a puls repetition rate of 12 kHz? Years ago I also tried to build a CuCl laser stuck in getting two quite fast pulses.
 

Laserbuilder

Active member
Joined
Dec 4, 2016
Messages
183
Points
43
I achieved this by using high power fast hydrogen thyratron, which is driven by a smaller thyratron. The master oscillator is built on vacuum tubes. more information is in my CVL thread (Lightsaber copper vapour laser)
 

laser1975

New member
Joined
Mar 14, 2020
Messages
3
Points
1
Some time ago I visited my fellow glassblower and he made this laser tube for me from fused quartz. It has two side arms for placing copper halide in them an electrodes taken from linear flashlamps. I placed then the copper chloride that had unknown purity and quality. It had already changed colour to green, it indicated that CuCl partially turned in CuCl2. The active part of the tube with the side arms is surrounded by ceramic wool for thermal insulation. The active medium is 20 cm long and 12 mm wide. Anyway, I attached the vacuum pump and neon supply to the nipples of the tube set the neon flow at 10-15 Torr pressure and energised it with my "Lightsaber" CVL power unit. The copper chloride de-watered quickly and after warm up I saw unexpectidly bright superradiant lasing. The input power was around 1 kW with PRR 12 kHz. There was no special double-pulse timing, only continiously following pulses with high repetition rate. The optical cavity was absent. At these conditions the lasing power I would estimate about several hundreds of mW, like 100-200. The spot was too wide to be tightly focused, but I felt it quite hot on my skin.
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hello congratulations for all your good work really amazing, do you have videos of this laser working that I can share please?
 




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