A particular HeNe laser operating at 632.8 nm has a tube that is 40 cm long....

A particular HeNe laser operating at 632.8 nm has a tube that is 40 cm long. The operating gas temperature is about 130 C.

Calculate the frequency separation and the wavelength separation of the laser modes. How do these change as the tube warms up during operation? Taking the linear expansion coefficient to be 10-6 K-1, estimate the change in the mode frequency separation.

(please calculate the frequency separation and the wavelength separation)

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genius_generous answered 8 months ago

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