B+W Tek 532-50 lasers

[142laser]

Hi,
I have three B+W Tek 50 mW green lasers to offer. These were some of the first small green lasers to be built into the "Extreme Beam" projectors made by New Method Lasers (now One Stop Laser Shop) back in the days before analog modulation. We bought one of these from Bob Ash back then for about $1K I think doing 75 mW new. These three lasers are low hour pulls from biomedical machines and have been stored for years.. Sam Goldwasser just touched up the crystal temperature adjustment and set the power in the mid 50 mW range. I am only asking $150 each. They have a nice round beam but are not suitable for holography; they do have TTL modulation. These are reaaly small, make a tiny projector! Phil (813) 974-2378 pbergero@usf <dot>edu

See what Sam says about these lasers on the laser FAQ: http://repairfaq.cis.upenn.edu/Misc/...cl.htm#sclbwt1

[142laser]

The last one of the three I set at 75 mW, it will do about 100 mW but I backed off the current some. First buyer gets the hot one... Phil

[Song]

What is B+W please...? Sorry to ask.

[142laser]

B+W Tek is a laser and spectrometer company. The are older 50 mW current regulated green lasers that were used in light shows. Their lasers are far better quality than many far East brands. Thanks for asking, Phil

See: http://bwtek.com/

[Jem]

Hi Phil

I have an old B & W Tek laser here, ~25mW of 532nm goodness I believe. I bought it a long time ago to make holograms and believed it to be single longitudinal mode. In fact, I have made some decent holograms with it before I got a C315m and a Coherent 532-200 ring laser

It's a lovely little laser (which i've kept for sentimental reasons), and I am just querying whether or not it is likely to be single longitudinal mode in view of your statement regarding these lasers not being suitable for holography.

Many thanks

Jem

[142laser]

Hi Jem,
The style of B+W tek these are are not single frequency. I have had a couple that were SLM (by test, not by specification)...7 mW spec in a rectangular case. I just tested one of the 50 mW models this morning...two fat ugly peaks. It would make a hologram with a double image and bread and butter marks probably. I tested all of them a year or so ago, none were suiateble for holography. You were lucky. If they were good for holography and not just light shows my price would be $750, not $150. Best, Phil

[dsli_jon]

...Their lasers are far better quality than many far East brands...

I can definitely support Phils' statement that these are great little lasers.. I had started out with these, waaaay-back when I was making 'DIY-shoeboxes'..

(..pics are so-old, they're scans of 'prints', lol..
..and they made for really-nice, tight graphics / text-display. They'd make for a great rough-programming / 'living-room-rocker' rig.. Not sure if this driver is also analog-capable, but.. you can still do decent 'fades' / mixing even with TTL..

fwiw..
j

[Song]

Thank you very much!

B+W Tek is a laser and spectrometer company. The are older 50 mW current regulated green lasers that were used in light shows. Their lasers are far better quality than many far East brands. Thanks for asking, Phil

See: http://bwtek.com/

[Jem]

Hi Jem,
The style of B+W tek these are are not single frequency. I have had a couple that were SLM (by test, not by specification)...7 mW spec in a rectangular case. I just tested one of the 50 mW models this morning...two fat ugly peaks. It would make a hologram with a double image and bread and butter marks probably. I tested all of them a year or so ago, none were suiateble for holography. You were lucky. If they were good for holography and not just light shows my price would be $750, not $150. Best, Phil

Thanks for the info Phil