Abstract

Compression of intense Nd:YAG laser pulses by a fiber-grating compressor is investigated experimentally and theoretically. An increased stability of compressor operation in the Raman regime and a considerable further shortening of pulses with a compression factor of 130× is reported. A complete theoretical model of pulse compression is presented, including the combined action of self-phase modulation, stimulated Raman scattering, and group-velocity dispersion in the fiber. Detailed numerical calculations show the influence of laser input power on the shape, width, and peak intensity of compressed pulses for different fiber lengths and are directly compared with measurements.

© 1988 Optical Society of America

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