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Thats the question...Will retro reflections going back into the aixiz aperature of a LOC be bad for the diode? Standing By... 
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Will Retroreflections back into a LOC be bad?
- Thread starter Diode_Virgin
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daguin
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Yes. It could cause COD
Peace,
dave
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dave
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COD = Cause of death??? Because what you said it would be redundant...
daguin
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Laserman532 said:COD = Cause of death??? Because what you said it would be redundant...
Sorry -- Catastrophic Optical Damage -- The returning photons can cause damage to the crystal "mirror" which can lead to the laser cavity breaking down = LED
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dave
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so if one were so inclined to attempt to combine two diodes with a PBS for example the entrances to the cube would have to be "cocked" as to not permit a retroreflection one could say???
daguin
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Laserman532 said:
A PBS cube will NOT reflect much of the light back into the diode. They are clear glass, NOT a mirror. Plus good ones will be AR coated.
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dave
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thats what I was thinking also - thank you!
pat b
pat b
Laserman532 said:
A PBS would be no more problem than a normal lens. Besides, generally one focuses the beams before combining them. You would have a hard time getting any sort of efficiency trying to combine two beams with 30 degrees divergence.
