400%/W second harmonic conversion efficiency in 14 µm-diameter gallium phosphide-on-oxide resonators

Alan D. Logan, Michael Gould, Emma R. Schmidgall, Karine Hestroffer, Zin Lin, Weiliang Jin, Arka Majumdar, Fariba Hatami, Alejandro W. Rodriguez, Kai Mei C. Fu

Research output: Contribution to journalArticle

7 Scopus citations

Abstract

Second harmonic conversion from 1550 nm to 775 nm with an efficiency of 400% W−1 is demonstrated in a gallium phosphide (GaP) on oxide integrated photonic platform. The platform consists of doubly-resonant, phase-matched ring resonators with quality factors Q ∼ 104, low mode volumes V ∼ 30(λ/n)3, and high nonlinear mode overlaps. Measurements and simulations indicate that conversion efficiencies can be increased by a factor of 20 by improving the waveguide-cavity coupling to achieve critical coupling in current devices.

Original languageEnglish (US)
Pages (from-to)33687-33699
Number of pages13
JournalOptics Express
Volume26
Issue number26
DOIs
StatePublished - Dec 24 2018

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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    Logan, A. D., Gould, M., Schmidgall, E. R., Hestroffer, K., Lin, Z., Jin, W., Majumdar, A., Hatami, F., Rodriguez, A. W., & Fu, K. M. C. (2018). 400%/W second harmonic conversion efficiency in 14 µm-diameter gallium phosphide-on-oxide resonators. Optics Express, 26(26), 33687-33699. https://doi.org/10.1364/OE.26.033687