Efficient conversion of picosecond laser pulses into second-harmonic frequency using group-velocity dispersion

Yanjie Wang and R. Dragila
Phys. Rev. A 41, 5645 – Published 1 May 1990
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Abstract

A computer model has been used to investigate frequency doubling of 1-psec duration high-power pulses in potassium dihydrogen phosphate (KDP) for type-II phase matching. It has been found that group-velocity dispersion can be used to advantage by predelaying the ordinary and extraordinary polarizations appropriately in a thin KDP crystal with its axes aligned at 90° to the main conversion crystal. In that situation power conversion >100% from the fundamental to the second harmonic can be obtained with simultaneous ‘‘compression’’ of the output pulse duration by up to a factor of 5.

  • Received 28 August 1989

DOI:https://doi.org/10.1103/PhysRevA.41.5645

©1990 American Physical Society

Authors & Affiliations

Yanjie Wang and R. Dragila

  • Laser Physics Centre, Research School of Physical Sciences, The Australian National University, P.O. Box 4, Canberra, Australian Capital Territory 2601, Australia

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Issue

Vol. 41, Iss. 10 — May 1990

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