Fluoride microresonators for mid-IR applications
Ivan S. Grudinin, Kamjou Mansour, Nan Yu
TL;DR
This study investigates crystalline fluoride microresonators made from BaF2, CaF2, and MgF2 for mid-infrared applications, focusing on their fabrication, quality factors, and limiting factors such as impurities and multiphonon absorption.
Contribution
It provides the first comprehensive analysis of fluoride microresonators' quality factors at mid-IR wavelengths, highlighting fabrication impacts and material limitations.
Findings
MgF2 resonators achieve Q of 8.3 million at 4.58 μm
Quality factors are affected by impurities and surface water
Multiphonon absorption limits performance at mid-IR wavelengths
Abstract
We study crystalline fluoride microresonators for mid-infrared applications. Whispering gallery mode resonators were fabricated with BaF, CaF and MgF crystals. The quality factors were measured at wavelengths of 1.56 {\mu}m and 4.58 {\mu}m. The impacts of fabrication technique, impurities, multiphonon absorption and surface water are investigated. It is found that MgF2 resonators have room temperature Q factor of at wavelength of 4.58 {\mu}m, limited by multiphonon absorption.
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.