Answer to Question #120422 in Optics for Dheeraj

Question #120422

The He-Ne laser line 6328 Angstrom has bandwidth 0.1 Angstrom. The coherence length of the light beam is?

Expert's answer

coherence length is given by "\\frac{\\lambda^2}{\\Delta\\lambda}=\\frac{6238\\times6238}{0.1}=389126440\\ Angstrom"

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