Sawtooth grating-assisted phase-matching | Zendy

Pavel Sidorenko | Zendy; Maxim Kozlov | Zendy; Alon Bahabad | Zendy; Tenio Popmintchev | Zendy; Margaret M. Murnane | Zendy; Henry C. Kapteyn | Zendy; Oren Cohen | Zendy

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Sawtooth grating-assisted phase-matching

Author(s) -

Pavel Sidorenko,

Maxim Kozlov,

Alon Bahabad,

Tenio Popmintchev,

Margaret M. Murnane,

Henry C. Kapteyn,

Oren Cohen

Publication year - 2010

Publication title -

optics express

Language(s) - English

Resource type - Book series

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

ISBN - 978-1-55752-869-8

DOI - 10.1364/oe.18.022686

Subject(s) - sawtooth wave , optics , phase (matter) , modulation (music) , phase modulation , grating , physics , energy conversion efficiency , materials science , computer science , optoelectronics , phase noise , telecommunications , acoustics , quantum mechanics

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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