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Simple laser trichro... what do you think???

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laserist
Modified 10mW Greenie

Joined: 08 Jun 2005
Posts: 14
Picture(s): 4
Location: Florida, USA

Posted: 6/15/08, 1:07 AM Post subject: Simple las

Trichros can combine red, green, and blue beams to make white, but they are somewhat rare and expensive. However, since beamsplitters can also be used to combine two beams, why not use two beamsplitters to combine three beams into an RGB white laser? This would be a fairly inexpensive and easy build, assuming that my "design" works.

Take a look...what do you think?

Trichro.GIF

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_________________
Why was brown excluded from the rainbow? And where did indigo come from? I was taught there were three primary colors and three secondary colors. Whats with this indigo shite?
--George Carlin
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Bluefan
Fusion Laser

Joined: 20 Apr 2008
Posts: 299
Movie(s): 1

Posted: 6/15/08, 10:11 AM Post subject:

beamsplitters are usually ment for one wavelength of light. I think you need 2 dichroic filters.

staminanerd
Fusion Laser

Joined: 12 May 2007
Posts: 270
Movie(s): 3
Location: Monte Carlo

Posted: 6/16/08, 5:12 AM Post subject:

oh I think red and green lasers exists in low powered pen style version. It may be fairly unexpensive to build exept that blue lasers are expensive. It won't be a problem aquiring high powered red and green to combine them due to their moderate price. Combining them with beamsplitters won't be a problem, the wavelenght difference is neglectable, but the difficulty is to align the lasers correctly (perpendiculary) to the beam splitter to have a near single mode. You may also need to glue the three lasers firmly on a board, so that the exiting beam will stay as it is. I don't think it will ever become pen sized, but rather, at best, like a big mag-light, like the video contest entry for WL, which showed a R-G-Bluray laser.

skai
Fusion Laser

Joined: 10 Jul 2006
Posts: 287
Movie(s): 4
Location: Norway

Posted: 6/19/08, 2:11 PM Post subject:

Turn the blue/red laser 90 degrees CCW/CW so you can drop the unnecessary mirrors. _________________ Owner of a Phoenix >75mW (now modded with tape and toilet paper..(dont ask)), a Pulsar 125 >125mW, and 2x Core 5mW. My latest video :: High quality download here :: beamtools.skainet.net - laser calculators

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