Engineerable compression of ultrashort pulses by use of second-harmonic generation in chirped-period-poled lithium niobate
M. A. ArboreE. L. Ginzton Laboratory, Stanford University, Stanford, California 94305Almantas GalvanauskasIMRA America, 1044 Woodridge Avenue, Ann Arbor, Michigan 48105D. HarterIMRA America, 1044 Woodridge Avenue, Ann Arbor, Michigan 48105Ming-Han ChouE. L. Ginzton Laboratory, Stanford University, Stanford, California 94305M. M. FejerE. L. Ginzton Laboratory, Stanford University, Stanford, California 94305
1997en
ABI
Abstract
We demonstrate the use of an aperiodic quasi-phase-matching (QPM) grating to generate second-harmonic pulses that are stretched or compressed relative to input pulses at the fundamental frequency. We frequency doubled an externally chirped erbium-doped fiber laser generating 17-ps (FWHM) pulses at 1560nm to produce near-transform-limited 110-fs (FWHM) pulses at 780nm by use of a 5-cm-long lithium niobate crystal poled with a QPM grating chirped from an 18.2- to a 19.8-microm period.
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Cited by 90 references