Tapered semiconductor laser oscillator

Coherent light generators – Particular active media – Semiconductor

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372 19, 372 44, 372 92, 372 97, H01S 318

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active

055555446

ABSTRACT:
A semiconductor laser oscillator structure and method is described having a tapered gain region in one-half of a laser cavity and a confocal oscillator region in another half of the cavity. An aperture is formed between two pairs of cavity spoilers located between the two cavity halves. One pair of spoilers is provided for receiving light which is reflected off of an output facet back into the semiconductor and removing it from the gain region. The other pair of spoilers removes light reflected from a curved mirror surface formed at the end of the other laser cavity half.

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