Green DPSS lasers for holography

On: Sun, Feb 03, 02 12:49:34 PM

Mike Harrison wrote:

I have a Coherent 315m - a very high quality 100mW green laser which I'm told has a good coherence length - would this be significantly better than a 35-odd mW red diode for holography - I assume the high power would allow shorter exposures, which would reduce vibration problems (I can build a pulse generator to generate precise 'on' times if necessary!) Is green-sensitive film more or less expensive and available than the red stuff? Is safelightomg easier or harder with green film ? Any other comments ?

RESPONSES

Colin Kaminski - Sun, Feb 03, 02 01:17:53 PM

I have a 35mw red diode I would trade you! ;-) Let's see a $250 diode for a $2500+ DPSS I don't think you should take me up on that one. I would much rather work in green because it has much higher energy per photon and there are chemistries you can use that would require very long exposures in red. (Violet would be even cooler!) There is less film available but it is high quality. Safe lights are easy. You will need to make a shutter and not turn the laser on and off. Many people use a vu meter with a flag covering a hole. You will likley need to learn how to preshrink or post-swell your film but it is really no harder than shifting up from red. (Unless you are looking for green or blue holograms.) I would say buy some film and jump in! 64.167.151.114

Guillermito - Wed, Feb 13, 02 11:18:54 PM

Awww... When i think someone proposed to sell me a perfectly working 100 mW Coherent 315M a few weeks ago for just $600... And i said no. Damn. He sold it later for around $3000 on eBay, i think. When we switched it on in my appartment for a demo, i can tell you that the 532 nm green spot on a wall was so bright you could not even look at it directly. We lighted matches on the beam to have some fun :) Apparently the beam is slightly divergent, but that should not be a problem for simple Denisiuk setup. One more regret in my life :) -- Guillermito http://www.guillermito.net/holomuseum 132.183.189.182

zljzzd - Mon, Nov 04, 02 08:41:26 AM

Our company can supply high power green laser . (www.hrlaser.com) zljzzd@sina.com 202.103.99.232

Richard Zhao - Mon, Dec 02, 02 08:33:28 PM

Dear Sir or madam, We are always looking for a professional company to distribute our products until we visited your website and from there I know you are a trading company for laser products, and here I am drawing your attention to our laser products £¨http://www.viasho.com/next/English/Products.asp£©. We, viasho co, LTD, is a company specializing in the R&D, manufacturing different kinds of DPSS, we provide green red, and blue laser producer, the laser range from 532- 1064wavelength, 1-200output power, the following is our catalogue of our products: Our green laser(532nm) Output Powers 60 80 100 120 150 180 200 Unit price 650 775 900 1100 1400 1700 2000 Bulk price >10 pieces 630 750 875 1050 1350 1650 1800 Wavelength 532nm+/-1nm Mode TEM00 Beam Roundness >90% Output Power stability < 10% over 4 hours Polarization ratio 100:1 vertical Beam diameterBeam divergence 1.0mm~1.5mm1.0~1.2mrad Beam pointing stability < +/- 1% of beam divergence Size VA 120L x 60W x 42Hmm Size VB 200L x 60 W x 56Hmm Operation lifetime hours >5000 hours Operating temperature 10-40 Celsius degrees <> 59-104 deg F Operating voltage 85 ~260VAC Modulation, External Control 0 to 30k Hertz our blue laser: Mode LD-473nm -5 -10 -20 Output Powers 5 10 20 Price(USD) 2000 2400 2900 Wavelength 473nm+/-1nm Mode TEM00 Beam Roundness >90% Output Power stability < 10% over 4 hours Polarization ratio 100:1 vertical Beam diameterBeam divergence 1.0mm~1.5mm1.0~1.2mrad Beam pointing stability < +/- 1% of beam divergence Size VA 140L x 120W x 80Hmm Size VB 200L x 60 W x 56Hmm Operation lifetime hours >5000 hours Operating temperature 10-40 Celsius degrees <> 59-104 deg F Operating voltage 85 ~260VAC Modulation, External Control 0 to 30 Hertz If you want to know more about us, please visit our website at www.viasho.com, maybe you can find some catalogue that can draw your attention, if you still got any other questions, don¡¯t hesitate to contact me, I will try my best to help you. We provide competitive price for the best quality! Regards! Sincerely yours, Richard Zhao Viasho laser Tel) +86 10 64369963 Fax) +86 10 6436506 www.viasho.com Beijing Viasho co., LTD, Room 409, Sanxia Mansion Jiuxianqiao Road No.Jia, 11,Chaoyang District, Beijing, P R. China 211.94.136.20

Ariche@viasho.com - Mon, Dec 02, 02 08:34:57 PM

Dear Sir or madam, We are always looking for a professional company to distribute our products until we visited your website and from there I know you are a trading company for laser products, and here I am drawing your attention to our laser products £¨http://www.viasho.com/next/English/Products.asp£©. We, viasho co, LTD, is a company specializing in the R&D, manufacturing different kinds of DPSS, we provide green red, and blue laser producer, the laser range from 532- 1064wavelength, 1-200output power, the following is our catalogue of our products: Our green laser(532nm) Output Powers 60 80 100 120 150 180 200 Unit price 650 775 900 1100 1400 1700 2000 Bulk price >10 pieces 630 750 875 1050 1350 1650 1800 Wavelength 532nm+/-1nm Mode TEM00 Beam Roundness >90% Output Power stability < 10% over 4 hours Polarization ratio 100:1 vertical Beam diameterBeam divergence 1.0mm~1.5mm1.0~1.2mrad Beam pointing stability < +/- 1% of beam divergence Size VA 120L x 60W x 42Hmm Size VB 200L x 60 W x 56Hmm Operation lifetime hours >5000 hours Operating temperature 10-40 Celsius degrees <> 59-104 deg F Operating voltage 85 ~260VAC Modulation, External Control 0 to 30k Hertz our blue laser: Mode LD-473nm -5 -10 -20 Output Powers 5 10 20 Price(USD) 2000 2400 2900 Wavelength 473nm+/-1nm Mode TEM00 Beam Roundness >90% Output Power stability < 10% over 4 hours Polarization ratio 100:1 vertical Beam diameterBeam divergence 1.0mm~1.5mm1.0~1.2mrad Beam pointing stability < +/- 1% of beam divergence Size VA 140L x 120W x 80Hmm Size VB 200L x 60 W x 56Hmm Operation lifetime hours >5000 hours Operating temperature 10-40 Celsius degrees <> 59-104 deg F Operating voltage 85 ~260VAC Modulation, External Control 0 to 30 Hertz If you want to know more about us, please visit our website at www.viasho.com, maybe you can find some catalogue that can draw your attention, if you still got any other questions, don¡¯t hesitate to contact me, I will try my best to help you. We provide competitive price for the best quality! Regards! Sincerely yours, Richard Zhao Viasho laser Tel) +86 10 82034321 Fax) +86 10 82034365 E-mail:Ariche@Viasho.com www.viasho.com Beijing Viasho co., LTD, Room 407, Yihe Center, No.13, Haidian District, Beijing, 100088 P R. China 211.94.136.20

Austin M Gilson - Thu, Jan 02, 03 07:58:21 PM

I have a Coherent 315m 150mw laser head and controler but i need the cables for it and a control switch and power supply the controler and the laser is a new but old stock DO ANY OF YOU KNOW WHERE I CAN AQUIRE these items a image of the unit can be found here thanks http://home.earthlink.net/~ezcollect/DSC03797.JPG 216.249.76.114

Austin M Gilson - Thu, Jan 02, 03 08:21:04 PM

I almost forgot my email is Tiscrap@msn.com thanks 216.249.76.114


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