I have received improved dichros from Bridge (laserwave).
Here are some first test results.
Here are some first test result I measured with a stable 400mW 655nm dual setup combined with a pbs so H+V polarized.
(Please note the old dichro's are 1 year old and can be a little bit dirty, but they look clean)
Red no dichro = 400mW
Old reflect dichro = 372mW = 93% eff ( 7% loss)
New reflect dichro = 390mw = 97,5% eff ( 2,5% loss)
(this measurement was measured trough the galvo mirrors)
No reflect blue dichro = 312mW red
Old reflect blue dichro = 264 mW red = 84,6% eff (15,4% loss)
New reflect blue dichro = 303 mW red = 97,1% eff (2,9% loss)
How about transmition of the Red through the Blue? and Green through both?
Carl
@ Carl
he told it:
New reflect blue dichro = 303 mW red = 97,1% eff (2,9% loss)
Green is very difficult to measure.... I don't know if somebody has a absolute stable green laser to measure 1, 2 or 3% differences
I just thought he may have given the Green ago anyway dispite the issue of stabbilaty.
Carl
You could also measure the wastebeam simultaneously with a second power meter.
Assuming the reflectivity and absorption is a constant, you can compensate for instability of the laser.
That way you can eliminate variation of the source out of the equation.
sure !
Please lengthen your message.
Here are some results from measurements I did with a stable green laser with an extra (good) IR filter in front of the laser.
blue dichroic transmission 532nm
Eff Loss
Laserwave new 96,4% 3,6%
Swisslas 97,9% 2,1%
Phils 96,2% 3,8%
red dichroic transmission 532nm
Eff Loss
Laserwave new 96,3% 3,7%
Swisslas 99,3% 0,6%
Phils 96,2% 3,8%
Last edited by mccarrot; 01-05-2010 at 13:57.