1. A 10 mW beam propagates in a medium with n = 1.5+ (5 x 10-4) i and has a vacuum wavelength of 750 nm. What is the wavelength in the material and how far does it go into the material before its power is reduced to 1 mW?

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1. A 10 mW beam propagates in a medium with n = 1.5+ (5 × 10-4) i and has
a vacuum wavelength of 750 nm. What is the wavelength in the material and
how far does it go into the material before its power is reduced to 1 mW?
Transcribed Image Text:1. A 10 mW beam propagates in a medium with n = 1.5+ (5 × 10-4) i and has a vacuum wavelength of 750 nm. What is the wavelength in the material and how far does it go into the material before its power is reduced to 1 mW?
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