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arXiv · 1610.02111

Second-harmonic generation in single-mode integrated waveguides through mode-shape modulation

Jeff Chiles·Seyfollah Toroghi·Ashutosh Rao·Marcin Malinowski·Guillermo Fernando Camacho-González·Sasan Fathpour
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Abstract

A simple and flexible technique for achieving quasi-phase-matching in integrated photonic waveguides without periodic poling is proposed and experimentally demonstrated, referred to as mode-shape-modulation (MSM). It employs a periodic variation of waveguide width to modulate the intensity of the pump wave, effectively suppressing out-of-phase light generation. This technique is applied to the case of second-harmonic generation in thin-film lithium niobate ridge waveguides. MSM waveguides are fabricated and characterized with pulsed-pumping in the near-infrared, showing harmonic generation at a signal wavelength of 784 nm.

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Jeff Chiles, Seyfollah Toroghi, Ashutosh Rao, Marcin Malinowski, Guillermo Fernando Camacho-González, Sasan Fathpour. 2016-10-07. Second-harmonic generation in single-mode integrated waveguides through mode-shape modulation. https://arxiv.org/abs/1610.02111

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