Open AccessFrequency comb generation in a quadratic nonlinear waveguide resonator
Author(s) -
Rikizo Ikuta,
Motoki Asano,
Ryoya Tani,
Takashi Yamamoto,
Nobuyuki Imoto
Publication year - 2018
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.26.015551
Subject(s) - resonator , optics , quadratic equation , frequency comb , nonlinear system , waveguide , physics , chip , nonlinear optics , sum frequency generation , optical cavity , optoelectronics , telecommunications , laser , computer science , quantum mechanics , mathematics , geometry
Enhancement of a nonlinear optical interaction through waveguides or resonators disclose unconventional interplay among multiple lights. Microresonator-based optical frequency comb (OFC) generation via third order nonlinearity is a typical example of such enhancements. Recently, quadratic-nonlinearity-based OFC with an external cavity configuration has been found and its on-chip implementation is highly demanded. Here we for the first time demonstrate such an on-chip OFC with a quadratic nonlinear waveguide resonator. Furthermore, we controlled the comb spectra separation by adjusting frequency difference of two pump light. This on-chip quadratic device will be useful for not only metrologies but also integrated quantum information technologies.