Recent content by argon

Definitely not. You could divide by ten and you're even too high, sorry ;-) Unfortunately, most of the diode lasers even do not reach anything near 5000h. Some of them may be rated for something like that, but in reality they never reach it, not even close. If you don't believe it, ask the...

Many thanks for all your inputs ;-) I agree with what's been said about gas lasers, but: HeNes have a way better beam quality than most dpss lasers and the lifetime of a HeNe can exceed 20000 hours! I would like to see a solid state laser with that lifetime. HeNe is still present in laboratories...

Dear Laserfriends just saw on ebay a yellow HeNe for US$200, maybe someone is interested. Please note, this is not my offer, so I don't guarantee for anything at all. Seems there is no power supply with it, but this should be easily found or self-made. Research Electro Optics Lhyr 0250M Class...

ionlaser555, those arcs are really angry :yh: I like the sound...

The capacitors in the shown schematic are not a ballast, they are for achieving 50Hz/60Hz resonance for producing big arcs. Sooner or later the insulation will break down if you put 4 transformers in series. normally they are earthed on the inner side of the high voltage windings at the core...

Hello Marco I would not try to remove the shunts, because your MOT will overheat very very quickly without the shunts and most certainly it will blow your fuse. If you want to draw big arcs, you could compensate the leakage inductance by adding two paralleled microwave capacitors (2µf) in...

Many thanks for your kind feedback, Sigurthr! Heating was not an issue at the MMC, but after a longer run I realized, the nails in the primary were heating enough for melting the plastics of the primary holders for the copper tube. I didn't solve this so far. Also the bleeder resistors on the...

Many thanks for the Rep! :-)

I would like to share with you a small DRSSTC I built last year. Spark legnth is a bit more than 1 meter. The coil is not optimally tuned and I didn't take the time to build it entirely with case and so on, because I'm in the building process of a small QCW DRSSTC at the moment, which will be...

Even if you had a bottle of pure Xenon at your fingertips, it would be impossible to build your Xe-Laser. Manufacturers use high vacuum pumping stations which alone cost more than you can pay, and even such a high vacuum pumping station will suck several days before you get the required vacuum...

Hello H2Oxide! Many thanks for the given rep! Wish you many hours of yellow HeNe-joy :-) Best regards argon

Hello H2Oxide I haven't been here for a while, so I saw your thread only now. Congrats to the buy of these lasers. Just the yellow one is the money worth I think ;-) I'm pleased you got the ebay-offer :wave: Enjoy your beams! Best regards argon

Very nice laser head! I especially love the history behind it. in the past I had a Melles Griot 643 Whitelight-Laser ArKr. It was a beauty, but I gave it away to another laser-freak, because I didn't had the time for periodic runs and the tube pressure got higher and higher. Nevertheless, some...

Thank you guys for your tips regarding 612nm. Maybe someone is inteersted in the following auction on ebay. Three HeNes, red, green and yellow, unfortunately in "unknown condition": 3 Lasers JDS Uniphase 1135P Lasos LGK 7512 P LGK 7786 P100 | eBay It is rather easy to build a power supply for...

Mattronium, you must be joking ;-) Just for a simple toy this is enough money. It was an auction at ricardo.ch, a swiss auction line, something similar like Ebay. At first it started at 50 CHF, but then it got higher and higher. Honestly, I wouldn't spend much more than this. Anyway, it is in...