Broadband Quasi-Phase-Matched Harmonic Generation in an On-Chip Monocrystalline Lithium Niobate Microdisk Resonator

Jintian Lin, Ni Yao, Zhenzhong Hao, Jianhao Zhang, Wenbo Mao, Min Wang, Wei Chu, Rongbo Wu, Zhiwei Fang, Lingling Qiao, Wei Fang, Fang Bo, and Ya Cheng
Phys. Rev. Lett. 122, 173903 – Published 3 May 2019
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Abstract

We reveal a unique broadband natural quasi-phase-matching (QPM) mechanism underlying an observation of highly efficient second- and third-order harmonic generation at multiple wavelengths in an x-cut lithium niobate (LN) microdisk resonator. For light waves in the transverse-electric mode propagating along the circumference of the microdisk, the effective nonlinear optical coefficients naturally oscillate periodically to change both the sign and magnitude, facilitating QPM without the necessity of domain engineering in the micrometer-scale LN disk. The second-harmonic and cascaded third-harmonic waves are simultaneously generated with normalized conversion efficiencies as high as 9.9%/mW and 1.05%/mW2, respectively, thanks to the utilization of the highest nonlinear coefficient d33 of LN. The high efficiency achieved with the microdisk of a diameter of 30μm is beneficial for realizing high-density integration of nonlinear photonic devices such as wavelength convertors and entangled photon sources.

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  • Received 16 October 2018

DOI:https://doi.org/10.1103/PhysRevLett.122.173903

© 2019 American Physical Society

Physics Subject Headings (PhySH)

Atomic, Molecular & Optical

Authors & Affiliations

Jintian Lin1,*, Ni Yao2,*, Zhenzhong Hao3, Jianhao Zhang1,5, Wenbo Mao3, Min Wang4, Wei Chu1, Rongbo Wu1,5, Zhiwei Fang4, Lingling Qiao1, Wei Fang2,†, Fang Bo3,‡, and Ya Cheng1,4,5,6,§

  • 1State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
  • 2State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou 310027, China
  • 3The MOE Key Laboratory of Weak Light Nonlinear Photonics, TEDA Applied Physics Institute and School of Physics, Nankai University, Tianjin 300457, China
  • 4State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200062, China
  • 5University of Chinese Academy of Sciences, Beijing 100049, China
  • 6Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, Shanxi 030006, China

  • *These authors contributed equally to this work.
  • wfang08@zju.edu.cn
  • bofang@nankai.edu.cn
  • §ya.cheng@siom.ac.cn

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Issue

Vol. 122, Iss. 17 — 3 May 2019

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