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  1. Laserbuilder

    561nm Yellow YAG (?) from Lumenis Varia Eye Laser

    Make a final headshot -- buy my 130W YAG chamber:yh::yh::yh:
  2. Laserbuilder

    Laserbuilder's collection of gas and other lasers

    23) Casual russian dye circulator. This is an appliance for pumping dye through the cuvettes of lamp pumped dye lasers and it went with all models of russian lamp pumped dye lasers. Inside it has a variable valtage power supply and a small pump with a DC motor, so the pumping speed can be...
  3. Laserbuilder

    Laserbuilder's collection of gas and other lasers

    Yes it is. It is really long, at least 1.2-1.3 meter. Modern chinese 40W tubes are 70 cm long.
  4. Laserbuilder

    Laserbuilder's collection of gas and other lasers

    22) LGN703 CO2 laser This is one of the most casual soviet\russian CO2 lasers. 40W at 10.6 um wavelength. The power supply for it I've built myself, using an NST transformer with a voltage doubler, where I used vacuum tubes instead the diode chains. The water circulator is built in the PSU...
  5. Laserbuilder

    K301V 125W CW Nd:YAG pumping chamber for sale

    I have both HR and T=20% OC mirrors, but I'm not sure that maximum power can be achieved with them. I think OC should be at least T=30%.
  6. Laserbuilder

    K301V 125W CW Nd:YAG pumping chamber for sale

    The K301V pumping chamber is now on e-bay at lower price. 130W Nd:YAG Laser Cavity (pumping chamber, core) K301V | eBay
  7. Laserbuilder

    Homebuilt 3-5W Copper Vapour Laser System

    Recently I have made and added all necessary nameplates for the power supply, and at the moment it is finished, though I hadn't tried some improvements of the HVDC section of it. Now I have to finish the laser head, only cosmetics is left.
  8. Laserbuilder

    CO2 laser build (from scratch)

    When I was building my CVL -- I had no experience at all with high voltage electronics of short nanosecond pulses. Moreover, there was no hobbyists' experience on CVL published in the internet too. I read loads of literature and scientfic articles about CVL power units. But such research gives...
  9. Laserbuilder

    CO2 laser build (from scratch)

    For the first time you can try a copper plate with the 2-2.5 mm dia hole in its center. The hole must be sealed with a small shard of ZnSe or a piece of polished NaCl ordinary salt crystal. Try visiting Jarrod Kinsey's web site, he has a rich experience building CO2 lasers. Jarrod's Laser...
  10. Laserbuilder

    K301V 125W CW Nd:YAG pumping chamber for sale

    I also have for sale the following laser parts: 1) 6.3*100 mm separate Nd:YAG rod for the K-107 pumping chamber. My price is 150$ for it. 2) 10*260 mm separate Nd:Glass rod. I'll let it go for 100$. 3) Really BIG ZnSe lens for multi-kW industrial CO2 laser. 2" diameter, 7.5" focus length...
  11. Laserbuilder

    K301V 125W CW Nd:YAG pumping chamber for sale

    I'd like to add for sale one more Nd:YAG pumping chamber. This is a K-107 pulsed pumping chamber from a laser welding machine. It has a 6.3*100 mm YAG rod with higher Nd dopant concetntration than in a CW rod in K-301. The datesheet claims that it can give output of 4 Joules from 200J pumped...
  12. Laserbuilder

    Trying to build an insane 532 nm laser

    Great thanks for your comprehensive answers. :thanks: After finishing my current CVL project I'll probably restart this one. +rep.
  13. Laserbuilder

    Trying to build an insane 532 nm laser

    Yes, I did. The OC mirror of my laser is hardly mounted, the HR and the YAG are adjustable. At first, I aligned the cavity to get maximum output power. Then I changed the OC on a second HR and verified that the laser worked. After that I inserted the doubling crystal in the cavity and made...
  14. Laserbuilder

    Trying to build an insane 532 nm laser

    Does The plate from the first link have to be placed under Brewster angle?
  15. Laserbuilder

    Trying to build an insane 532 nm laser

    Probably not. As far as I know, there are no conditions in the flat mirror cavity for the beam to get certain polarization. All best results I got with the phase matched crystal at the optimal temperature which was quire hard to maintain without a proper thermocontroller. When it is properly...
  16. Laserbuilder

    Trying to build an insane 532 nm laser

    I've got a couple of relatively high power Nd:YAG lasers, so I had a regular wish to frequency double one of them. My expectations were like: "OK, I'll take a 125W pumping chamber, insert it between two HR mirrors, place a frequency doubling crystal between the chamber and one of the mirrors...
  17. Laserbuilder

    K301V 125W CW Nd:YAG pumping chamber for sale

    Reducing price to 850$
  18. Laserbuilder

    Laserbuilder's collection of gas and other lasers

    The lasing threshold is 15-20 kJ. My caps allow to store 40 kJ at maximum voltage. The capacitor charger peak power consumption was 5 kW, but it doesn't matter, since I can charge them slowly from microwave oven transformers.
  19. Laserbuilder

    K301V 125W CW Nd:YAG pumping chamber for sale

    Feel free to offer your price and to trade. It can be decreased significantly in the process of negotiation.
  20. Laserbuilder

    Laserbuilder's collection of gas and other lasers

    By the way, as far as I know, this is the only russian laser that had a key switch. All other, even 250W CW YAG ones didn't have it, anybody could turn them on.


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