Nonlinear pulse compression in inhomogeneous photonic crystals upon backward second harmonic generation

Frequency doubling of phase-modulated laser pulses, which is caused by a quasi-synchronous interaction of counterpropagating waves, is studied theoretically in crystals with an aperiodic domain structure. The simultaneous influence of the change in the domain period and the phase-modulation depth of...

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Bibliographic Details
Published in:Quantum electronics (Woodbury, N.Y.) N.Y.), 2009-04, Vol.39 (4), p.317-320
Main Authors: Sapaev, U K, Kulagin, I A, Usmanov, T
Format: Article
Language:English
Subjects:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
CRYSTALS
DOMAIN STRUCTURE
ELECTROMAGNETIC RADIATION
Exact sciences and technology
Frequency conversion
harmonic generation, including high-order harmonic generation
FREQUENCY MIXING
Fundamental areas of phenomenology (including applications)
HARMONIC GENERATION
INTERACTIONS
LASER RADIATION
MODULATION
Nonlinear optics
NONLINEAR PROBLEMS
Optical materials
Optics
Photonic bandgap materials
Physics
PULSES
RADIATIONS
Ultrafast processes
optical pulse generation and pulse compression
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Summary:Frequency doubling of phase-modulated laser pulses, which is caused by a quasi-synchronous interaction of counterpropagating waves, is studied theoretically in crystals with an aperiodic domain structure. The simultaneous influence of the change in the domain period and the phase-modulation depth of fundamental radiation on the formation of a second-harmonic pulse is analysed in the nonstationary regime. It is shown that there exists an optimal relation between chirps in an aperiodic crystal and the phase modulation of fundamental radiation at which the maximum nonlinear compression of the second-harmonic pulse duration is possible. (nonlinear optical phenomena)
ISSN:1063-7818
1468-4799
DOI:10.1070/QE2009v039n04ABEH013908