Pulse shaping and compression by second-harmonic generation with quasi-phase-matching gratings in the presence of arbitrary dispersion
G. ImeshevE. L. Ginzton Laboratory, Stanford University, Stanford, California 94305 USAM. A. ArboreE. L. Ginzton Laboratory, Stanford University, Stanford, California 94305 USAStephane KasrielE. L. Ginzton Laboratory, Stanford University, Stanford, California 94305 USAM. M. FejerE. L. Ginzton Laboratory, Stanford University, Stanford, California 94305 USA
2000en
ABI
Аннотация
A theoretical treatment of group-velocity dispersion and higher-order dispersion effects on the second-harmonic-generation (SHG) process with longitudinally nonuniform quasi-phase-matching (QPM) gratings is presented. We show how these dispersion terms can be accounted for in the design of a QPM-SHG pulse shaper. Our numerical simulation results show that, if the proper dispersion correction is included in the QPM grating design, one can generate sub-10-fs transform-limited pulses at 400 nm by doubling the output of a Ti:sapphire oscillator.
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