Mid-Infrared Crystalline Supermirrors for Optical Cavities with 231 000 Finesse

  • Gar-Wing Truong (Speaker)
  • Lukas W. Perner (Contributor)
  • Georg Winkler (Contributor)
  • Seth B. Cataño-Lopez (Contributor)
  • Catherine Nguyen (Contributor)
  • David Follman (Contributor)
  • Heckl, O. H. (Contributor)
  • Garrett D. Cole (Contributor)

Activity: Talks and presentationsTalk or oral contributionScience to Science


We fabricate and characterize substrate-transferred single-crystal mirror coatings with 9.33 ± 0.17 ppm of transmittance and 4.27 ± 0.52 ppm of excess optical loss, corresponding to a transmission-loss dominated reflectance of 99.9986% at 4.45 µm.
Period11 May 2023
Event titleCLEO 2023 San José
Event typeConference
LocationSan Jose, United States, CaliforniaShow on map
Degree of RecognitionInternational


  • Distributed Bragg reflectors
  • Crystalline mirrors
  • Metrology