Engineering, 06.04.2020 19:06 tdowling331

Modal Powers in a Multimode Laser. A He-Ne laser operating at Î»ã= 632.8 nm produces 50 mW of multimode power at its output. It has an inhomogeneously broadened gain profile with a Doppler linewidth Î1b-1.5 GHz and the refractive index 1, The resonator is 30 cm long. (a) If the maximum small-signal gain coefficient is twice the loss coefficient, determine the 15.2.5 number of longitudinal modes of the laser. (b) If the mirrors are adjusted to maximize the intensity of the strongest mode, estimate its power.

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Modal Powers in a Multimode Laser. A He-Ne laser operating at Î»ã= 632.8 nm produces 50 mW of multim...

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