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  • Hologrampa's Avatar
    Today, 10:18
    Very low hours (<50) Clubmax 1800 including optional Discoscan 2.0 lens. 750 FB4-QS NET Quick Connect 400
    0 replies | 6 view(s)
  • Hologrampa's Avatar
    Today, 10:08
    I have quite a bit of equipment to sell. Not yet listed on ebay as it's going to take a while to catalogue it all. I've got everything needed to produce full-colour holograms. Including: Melles Griot 320mW 457nm green laser - 3000 Coherent Sapphire 175mW blue laser - 750 Lasos 200mW 640nm...
    0 replies | 7 view(s)
  • all1's Avatar
    Today, 03:34
    Up for sale is a ZScanner 700 CX Handheld Color 3D Laser Scanner, In excellent condition. The ZScanner 700 CXextends the proven, handheld ZScanner 700 platform by providing data capture in full color for more realistic and informative concept models and 3D visualization. Technical...
    0 replies | 22 view(s)
  • jian725's Avatar
    Today, 00:33
    Just change a weibsite. www.dtscanner.cn dtelectronic@163.com
    1 replies | 342 view(s)
  • LaserGuy216's Avatar
    12-04-2022, 15:25
    lol, old habits are hard to break, wink wink;)
    6 replies | 727 view(s)
  • bradstockdale's Avatar
    12-04-2022, 07:15
    Ah, a Lexel 75. The laser that started my love of ion lasers. Lol. Wish I were closer. I'd happily give it a home. Hope you find a place for it.
    1 replies | 253 view(s)
  • all1's Avatar
    12-01-2022, 07:28
    I'm open to a reasonable offer for this.
    1 replies | 294 view(s)
  • lasermaster1977's Avatar
    11-30-2022, 11:27
    A terrifically illuminating idea that is richly deserving of the award. What a nice set a easily manipulated controls for effective choreography! Nice video and explanation. You get my "Simple Yet Elegant" (SYE) award as well. Congrats.
    3 replies | 463 view(s)
  • dchammonds's Avatar
    11-30-2022, 00:22
    dchammonds replied to a thread Dean's List in The Lounge
    Some more good stuff...
    24 replies | 3452 view(s)
  • lasermaster1977's Avatar
    11-29-2022, 23:00
    lasermaster1977 replied to a thread CYGN-B in The Lounge
    Perfect! Thanks for clarifying your notation. You're on your way!
    652 replies | 157741 view(s)
  • Greg's Avatar
    11-29-2022, 21:24
    Greg replied to a thread CYGN-B in The Lounge
    My mistake. I caused confusion by noting "adjust to 2.5V". What I meant is adjust for the inverted output with zero signal in to be 2.5V, not the potential on the wiper of the pot to be 2.5V. I just measured the wipers for the X and Y circuits and both are slightly below -2V. You are right, 0 to...
    652 replies | 157741 view(s)
  • lasermaster1977's Avatar
    11-29-2022, 17:45
    lasermaster1977 replied to a thread CYGN-B in The Lounge
    So, if you don't care that your circuit yields a 0 to minus 5v result, when the input is at +10v, but when it is as -10v, then what? I took literally that you wanted a 0 to +5v yield.
    652 replies | 157741 view(s)
  • Greg's Avatar
    11-29-2022, 17:13
    Greg replied to a thread CYGN-B in The Lounge
    I'm sorry, I forgot to mention this is an inverting thing, because with abstract cycloids who cares. What you described sounds like this actually is that. My thinking involved in the top schematic +-10v to 0->+5v is that two voltages are summed. One is +-10V scaled down with a voltage...
    652 replies | 157741 view(s)
  • mixedgas's Avatar
    11-29-2022, 15:19
    I just had a friend in Cleveland call me about a 8900S CW Ti:Saph, and making it potentially mode lock. Small world. From helping him, I received a new manual. SPs manual has a few tips you may find interesting. Please see attached Spectra manual . The comments on doping and crystal axis are...
    3 replies | 369 view(s)
  • NiklasH's Avatar
    11-29-2022, 14:14
    Hi Steve, thank you very much for your tips! Especially the paper by Kogelnik has really helped me, I have now redeveloped the resonator to a three mirror V-shape with the correct angle for astigmatism correction, for me its 8.8. For testing purposes, I have also replaced the OC with an HR,...
    3 replies | 369 view(s)
  • JasonB's Avatar
    11-29-2022, 14:05
    Thank you, good to "see" you again!
    2 replies | 720 view(s)
  • lasermaster1977's Avatar
    11-29-2022, 11:36
    lasermaster1977 replied to a thread CYGN-B in The Lounge
    In reference to the top schematic: I don't see how your +-10v to 0->+5v converter schematic is going to work that way it is drawn. It's output will not always be unipolar with the scaled down plus and minus 10v signal swings. When the input is +10v the opamp output will be -1.75 +(-2.5) or...
    652 replies | 157741 view(s)
  • lasingfox's Avatar
    11-29-2022, 10:28
    Hello, I'm selling a few things and I thought I might as well post them here. I've attached a few pictures but most are in the ebay listings. If you'd like more pictures or any information feel free to ask. I'm also willing to accept trades. :) Lexel model 75 Argon Ion laser (free if pickup...
    1 replies | 253 view(s)
  • VDX's Avatar
    11-29-2022, 05:22
    ... had different optics with plastic- or glas-lenses from old laser printers, which weren't AR coated, so could be used for UV too, but had to adjust the collimaton for the diode to match the f-theta-FL to get a focal plane, as the FL is different than for NIR ... was a bit "tricky" though ......
    9 replies | 1202 view(s)
  • rajhlinux's Avatar
    11-29-2022, 05:12
    Im trying to do the same using polygon scanners from laser printers. How were you able to do it for sensitizing PCB photoresist? Can you share details how you did so? Are you using the lens that came with the laser printer? I read that these lens are no good since they are specifically...
    9 replies | 1202 view(s)
  • Greg's Avatar
    11-28-2022, 22:21
    Greg replied to a thread CYGN-B in The Lounge
    I'm thinking how to get these shows up and performable / recordable / editable / watchable with as little hardware building as possible. With the scheme given in the attached graphic, one would need their choice of cycloid generator, 4 Bela units, 4 ILDA capable projectors, a couple of joystick...
    652 replies | 157741 view(s)
  • james's Avatar
    11-28-2022, 21:41
    james replied to a thread Dean's List in The Lounge
    For those who have HBOmax streaming service, they have added what appears to be substantially all of the Warner Brothers cartoons going all the way back to 1931. Many are black and white and some employ the first color film technology that only allowed gray scale and shades of only two colors,...
    24 replies | 3452 view(s)
  • mixedgas's Avatar
    11-28-2022, 20:14
    Work on a PCAOM or AOTF Driver some time, you'll understand why I posted this. Thanks To Minicircuits INc. Attachments are included Attenuation Quick Reference: Power In (mW) Power Out (mW) Attenuator Value 10 9.0 -0.45 Db 10 8.0 ...
    0 replies | 220 view(s)
  • lasermaster1977's Avatar
    11-28-2022, 17:27
    Hi andyf97, welcome back to PL and thank you for your comments and interest. There is a wealth of knowledge and sharing here. I've not shared the schematic details with anyone on this forum ( or other places, that I can remember ;-) ), just the photos and their descriptions. I had...
    177 replies | 81403 view(s)
  • andyf97's Avatar
    11-28-2022, 16:56
    I've not visited PL for years, very nice to see your post, I wonder did you share at any point in time your designs and if so can you write with whom you shared them? I am not asking you to share them, I wondered what actually became of them.
    177 replies | 81403 view(s)
  • mixedgas's Avatar
    11-28-2022, 16:12
    0. Read any A. E Siegman lately? Dr. Siegman was a cool mentor, trust me on that. Dr Kochner has some cool books on Solid State Lasers, that are a must read. 1. Have you calculated if you have a stable, low astigmatism resonator with Kogelnik et al. (1972) Astigmatically compensated cavities...
    3 replies | 369 view(s)
  • TheHermit's Avatar
    11-28-2022, 11:52
    Thank you for the info. So far, so good with my current pair of DT-40s. My 3rd projector will have EMS8000's. BR :cool:
    6 replies | 436 view(s)
  • Phritzler's Avatar
    11-28-2022, 08:47
    Hi! I stopped to talking to anybody about Scannermax and their business strategy. I think the most people know how its going and what it means to the business and our global market which has more than just one Showlaser supplier. We had also DT50 scanners a lot and only problems with, becouse...
    6 replies | 436 view(s)
  • Phritzler's Avatar
    11-28-2022, 01:22
    Hello! These are rated on 60kpps and come with digital amps. The EMS8000 are 1190/Set (5 and 6.5mm apertures) and are avaiable. Yes, we havent added them on our homepage yet, there where not much requests ... BR Phillip
    6 replies | 436 view(s)
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