What is the coefficient of finesse of the instrument

Reference no: EM13494890

A Fabri-Perot interferometer is to be used to resolve the mode structure of a He-Ne laser operating at 632.8 nm. The frequency separation between the modes is 150 MHz. The plates are separated by an air gap and have a reflectance of 0.999. What is the coefficient of finesse of the instrument? What plate spacing is required? What is the free spectral range of the instrument under these conditions?

Reference no: EM13494890

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