One piece of filter material placed in a HeNe laser beam reduces the power from 3.0 mW to 2.25 mW. What is the transmitted power if three more identical filters are used?
After passing through the last filter (4th),the transmission power is given by..
=1.25-(1.25×0.25)=0.93mW.
Addition: Transmission power=incident power×transmittivity.
Transmitivity={transmitted power}/{incident power}.
One piece of filter material placed in a HeNe laser beam reduces the power from 3.0...
A 6.0 mW vertically polarized laser beam passes through a polarizing filter whose axis is 80 degrees from vertical. What is the laser-beam power after passing through the filter?
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