3. If the wavelength of the light wave is, the wavelength difference is A2, and the corresponding frequency and - , prove that: frequency difference are marked as, Ay wavelength difference A2=2×10 nm, calculate the frequency difference and the coherence length. For the He-Ne laser with 2=632.8nm and the

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3. If the wavelength of the light wave is, the wavelength difference is ^^, and the corresponding frequency and
-
, prove that:
frequency difference are marked as , ^7
wavelength difference A2=2×10 nm, calculate the frequency difference and the coherence length.
For the He-Ne laser with 2=632.8nm and the
Transcribed Image Text:3. If the wavelength of the light wave is, the wavelength difference is ^^, and the corresponding frequency and - , prove that: frequency difference are marked as , ^7 wavelength difference A2=2×10 nm, calculate the frequency difference and the coherence length. For the He-Ne laser with 2=632.8nm and the
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