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

Authors :
Logan AD
Gould M
Schmidgall ER
Hestroffer K
Lin Z
Jin W
Majumdar A
Hatami F
Rodriguez AW
Fu KC
Source :
Optics express [Opt Express] 2018 Dec 24; Vol. 26 (26), pp. 33687-33699.
Publication Year :
2018

Abstract

Second harmonic conversion from 1550 nm to 775 nm with an efficiency of 400% W <superscript>-1</superscript> 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 ∼ 10 <superscript>4</superscript> , low mode volumes V ∼ 30(λ/n) <superscript>3</superscript> , 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.

Details

Language :
English
ISSN :
1094-4087
Volume :
26
Issue :
26
Database :
MEDLINE
Journal :
Optics express
Publication Type :
Academic Journal
Accession number :
30650802
Full Text :
https://doi.org/10.1364/OE.26.033687