Abstract

Nonlinear optical conversion with frequency combs is important for self-referencing and for generating shorter wavelength combs. Here we demonstrate efficient frequency comb doubling through the combination of second-harmonic generation (SHG) and sum-frequency generation (SFG) of an input comb with a high $Q$, phase-matched ${\chi }^{(2)}$ microring resonator. Phase coherence of the SHG and SFG nonlinear conversion processes is confirmed by sinusoidal phase-dependent interference between frequency doubled comb lines.

© 2016 Optical Society of America

Green, red, and IR frequency comb line generation from single IR pump in AlN microring resonator

Hojoong Jung, Rebecca Stoll, Xiang Guo, Debra Fischer, and Hong X. Tang
Optica 1(6) 396-399 (2014)

Visible light emission from a silica microbottle resonator by second- and third-harmonic generation

M. Asano, S. Komori, R. Ikuta, N. Imoto, Ş. K. Özdemir, and T. Yamamoto
Opt. Lett. 41(24) 5793-5796 (2016)

Control of second-harmonic generation in doubly resonant aluminum nitride microrings to address a rubidium two-photon clock transition

Joshua B. Surya, Xiang Guo, Chang-Ling Zou, and Hong X. Tang
Opt. Lett. 43(11) 2696-2699 (2018)

Second-harmonic generation in aluminum nitride microrings with 2500%/W conversion efficiency

Xiang Guo, Chang-Ling Zou, and Hong X. Tang
Optica 3(10) 1126-1131 (2016)

Optical frequency comb generation from aluminum nitride microring resonator

Hojoong Jung, Chi Xiong, King Y. Fong, Xufeng Zhang, and Hong X. Tang
Opt. Lett. 38(15) 2810-2813 (2013)