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I am only getting started with it and my skill is quite poor yet. But in a couple of months I think it will be much easier for me.

Any time -- welcome. Just inform please in advance about your visit.

This is just my hobby, I spend 146% of my free time on it and sometimes repair lasers for my University, where I used to study. I have already changed a couple of jobs and now I'm studying CNC lathe machining. Also I used to work as an electric motor refurbisher.

At the moment it is just for fun. This tube is only for "proof of concept" and is not for regular operation. Output power is very low (possibly 0.05 mW average) and I'm not sure it can have any applications. Any coaxial nitrogen or he-ne tube is not optimal for proper work as a neon laser...

Here I'd like to share my experience of building a real orange laser! this is a pulsed laser, that uses pure neon as a lasing medium. As far as we know, pure neon can lase only at one IR line in CW mode, mixing it with helium is needed to get visible output. Red he-ne lasers are the most...

Very nice small He-Ne!

Continuing to rebuild the Blumlein section of the power unit

No, this colour occured due to different camera settings.

This particular type of laser tube (UL-102) was used in some machinery for microchip manufacturing, generally Cu vapour lasers of higher powers (LGI-202, for example) were used in labs for pumping dye lasers, similar tubes of somewhat lower powers (tubes of KULON series) are used in medicine...

Oh, yes of course. I am working on several laser projects and have a big collection of old gas and lamp pumped solid state lasers. Many of them need repairs to make them running, some need refurbishment. I have some completed laser projects that I will post gradually as I get used to this forum...

This is a pure Cu laser and double pulsing is not needed for it. It doesn't give any benefits according to russian literature. Warm up time is 30-40 minutes, than 10 more minutes to reach maximum power of the output. Moreover, double pulsing is not needed for Cu halide (CuBr, CuCl, CuI) lasers...

Yes, I use a standard Blumlein generator but with very high PRR, that makes the laser to self-heat.

Yes, it really can lase superradiantly, but the power is low and the beam diverges like a flashlight. An unstable resonator can make beam divergence very low. If the laser is overheated the green line disappears from the lasing process -- only yellow remains. In context of building and operating...

Yes, I do. One of the electrodes is insulated from the cooling cylinder with the bushing (on the photo) made of fiberglass and epoxy. It smells a bit when heated, but works well. Also there should be a correct temperature mode of the tube, cooling it too intensly may reduce performance of the...

It actually gives a mix of two lines -- green (510 nm) and yellow (578 nm). I've separated them using a shard of a DVD as a diffraction grating. Normally both lines are equal in power, but in mine laser yellow is somewhat weaker. I've been working for nearly a year on this project. Including...

Here are some additional photos of the Blumlein generator and the water cooler which didn't fit in the limit.

Hello to everybody, I am a laser hobbiist from Ukraine. I don't know wether this laser project is unique or not (probably for the states of former USSR it IS unique, we have very few laser hobbiists here), but I didn't find any information on anything similar. Most of people who worked with...