High-Q mid-infrared chalcogenide glass resonators
Materials Science
2018-11-06 v2 Chemical Physics
Abstract
In this letter, we fabricated and characterized chalcogenide glass resonators monolithically integrated on mid-infrared transparent CaF2 substrates. The devices feature an intrinsic Q-factor of 4E5 at 5.2 micron wavelength, which represents the highest Q-factor reported in planar mid-infrared resonators. It is found that moisture can significantly impact the device performance when the device was exposed to an ambient environment, although the high-Q characteristics can be restored after undergoing an annealing treatment. Using these devices, we further demonstrated on-chip cavity-enhanced spectroscopy to quantify mid-IR absorption of ethanol solutions around 5.2 micron wavelength.
Keywords
Cite
@article{arxiv.1612.04322,
title = {High-Q mid-infrared chalcogenide glass resonators},
author = {Hongtao Lin and Lan Li and Yi Zou and Spencer Novak and Kathleen Richardson and Juejun Hu},
journal= {arXiv preprint arXiv:1612.04322},
year = {2018}
}