Question

Assuming that the refractive index depends on the wavelength as n = n0+ ( 0), find the separation between the allowed modes for a gaas laser at 0 = 0.89 m, l = 300 m, n0 = 3.58, = 2.5 m1 b) a laser diode emitting at 0 = 850 nm has a gain spectral width of 32 nm and a peak gain of g(0) = 50 cm-1, plot g () vs . C) where g()=g(0) exp [-(-0)2 /22]. If t = 32.2 cm-1, show the region where lasing takes place. D) if the laser is 400 m long and n is 3.6, how many modes will be excited in this laser?

Answer 1

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