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Answer to Question #18348 in Optics for Umer

Question #18348
What is the frequency difference of 100 GHz equivalent to at the 850nm wavelength of Gallium arsenide lasers?
Expert's answer
850 nm transformed into Hz is
c/nu = 3*10^8/850*10^(-9) = 3.52*10^(14) Hz

100 GHz = 10^(11) Hz is much less then 850 nm in Hertz.

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