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Second harmonic generation in a high-Q lithium niobate microresonator fabricated by femtosecond laser micromachining

  • Jin Tian Lin
  • , Ying Xin Xu
  • , Zhi Wei Fang
  • , Min Wang
  • , Neng Wen Wang
  • , Ling Ling Qiao
  • , Wei Fang
  • , Ya Cheng*
  • *Corresponding author for this work
  • CAS - Shanghai Institute of Optics and Fine Mechanics
  • Zhejiang University
  • ShanghaiTech University
  • University of Chinese Academy of Sciences

Research output: Contribution to journalArticlepeer-review

Abstract

We report on second harmonic generation (SHG) in on-chip high-Q (>105) lithium niobate (LiNbO3, LN) microresonators fabricated by femtosecond laser micromachining. We examine the efficiency of SHG with either a continuous-wave (CW) or an ultrashort pulsed pump laser. The normalized conversion efficiencies of SHG obtained with the CW and pulsed pump lasers are measured to be 1.3510-5 m W-1 and 2.3010-6 m W-1, respectively.

Original languageEnglish
Article number114209
JournalScience China: Physics, Mechanics and Astronomy
Volume58
Issue number11
DOIs
StatePublished - 3 Nov 2015
Externally publishedYes

Keywords

  • femtosecond laser micromachining
  • lithium niobate microresonator
  • second harmonic generation

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