Sawtooth grating-assisted phase-matching

Pavel Sidorenko; Maxim Kozlov; Alon Bahabad; Tenio Popmintchev; Margaret Murnane; Henry Kapteyn; Oren Cohen

doi:10.1364/OE.18.022686

Sawtooth grating-assisted phase-matching

Pavel Sidorenko^*, Maxim Kozlov, Alon Bahabad, Tenio Popmintchev, Margaret Murnane, Henry Kapteyn, Oren Cohen

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

15 Scopus citations

Abstract

We show that a sawtooth phase-modulation is the optimal profile for grating assisted phase matching (GAPM). Perfect (sharp) sawtooth modulation fully corrects the phase-mismatch, exhibiting conversion equal to conventional phase matching, while smoothened, approximate sawtooth structures are more efficient than sinusoidal or square GAPM modulations that were previously studied. As an example, we demonstrate numerically optically-induced sawtooth GAPM for high harmonic generation. Sawtooth GAPM is the most efficient method for increasing the conversion efficiency of high harmonic generation through quasi-phase-matching, with an ultimate efficiency that closely matches the ideal phase-matching case.

Original language	English
Pages (from-to)	22686-22692
Number of pages	7
Journal	Optics Express
Volume	18
Issue number	22
DOIs	https://doi.org/10.1364/OE.18.022686
State	Published - 25 Oct 2010
Externally published	Yes

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AU - Bahabad, Alon

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AU - Murnane, Margaret

AU - Kapteyn, Henry

AU - Cohen, Oren

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AB - We show that a sawtooth phase-modulation is the optimal profile for grating assisted phase matching (GAPM). Perfect (sharp) sawtooth modulation fully corrects the phase-mismatch, exhibiting conversion equal to conventional phase matching, while smoothened, approximate sawtooth structures are more efficient than sinusoidal or square GAPM modulations that were previously studied. As an example, we demonstrate numerically optically-induced sawtooth GAPM for high harmonic generation. Sawtooth GAPM is the most efficient method for increasing the conversion efficiency of high harmonic generation through quasi-phase-matching, with an ultimate efficiency that closely matches the ideal phase-matching case.

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Sawtooth grating-assisted phase-matching

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