- Jun 18, 2012
that makes no sense to me but rotator plates are usually 1-2mm thick. they come in 1/4 and 1/2 wave. I really think your wasting your time.
Ah I was thinking of something totally different, are you sure the above setup would hypothetically work when the beam is reflected perfectly (same angle) back into the aperture (I don't understand how the waveplate acts as an isolator in this case)?What type of rotator are you on about gazer? Kecked is talking about waveplates. This is a classic case of overengineering imo. Yes, back reflection can cause issues on the odd occasion. But for most part it isn't a problem for most lasers we are dealing with. AR coatings or a even a brewster window like mentioned is more than enough in advanced setups.
Cheapest way of guaranteeing no back reflection:
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