Fabrication of dispersion engineered ultrahigh-Q crystalline optical microresonator for broad-bandwidth optical parametric oscillation

Shun Fujii, Koshiro Wada, Yasuhiro Kakinuma, Takasumi Tanabe

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We demonstrate the all-precision-machining fabrication of ultrahigh-quality-factor (Q) crystalline optical microresonators. The obtained Q exceeds 100 million for both magnesium fluoride (MgF2) and calcium fluoride (CaF2) materials. This constitutes the highest Q factor obtained for whispering gallery mode crystalline microresonators fabricated solely by ultra-precision machining. We also achieve octave-wide optical parametric oscillation using an MgF2 resonator fabricated with a computer-controlled machining process. This method readily enables advanced dispersion engineering for optical parametric oscillation and makes it possible to explore microcavity nonlinear optics and quantum optics without the need for skilled manual polishing techniques.

Original languageEnglish
Title of host publicationLaser Resonators, Microresonators, and Beam Control XXIII
EditorsVladimir S. Ilchenko, Andrea M. Armani, Julia V. Sheldakova, Alexis V. Kudryashov, Alan H. Paxton
PublisherSPIE
ISBN (Electronic)9781510641792
DOIs
Publication statusPublished - 2021
EventLaser Resonators, Microresonators, and Beam Control XXIII 2021 - Virtual, Online, United States
Duration: 2021 Mar 62021 Mar 11

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume11672
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceLaser Resonators, Microresonators, and Beam Control XXIII 2021
Country/TerritoryUnited States
CityVirtual, Online
Period21/3/621/3/11

Keywords

  • Optical microresonators
  • Optical parametric oscillation
  • Ultraprecision machining

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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