ArticleOptica2021
Mid-infrared interference coatings with excess optical loss below 10 ppm.
Article in Optica, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed, 56 citations in OpenAlex.
- Precise detection of tiny birefringence with accuracy reaching 10Nature communications · 2025Article
- Direct Frequency Comb Cavity Ring-Down Spectroscopy Using Vernier Filtering.The journal of physical chemistry. A · 2025Article
- Highly reflective silver mirror enhanced by several dielectric films prepared under the low substrate temperature.Heliyon · 2024Article
- Mid-infrared supermirrors with finesse exceeding 400 000.Nature communications · 2023Article
- Dual-comb cavity ring-down spectroscopy.Scientific reports · 2022Article
- Frequency stabilization of a quantum cascade laser by weak resonant feedback from a Fabry-Perot cavity.Optics letters · 2021Article
Corrections and comments
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Authors and funding
16 authors at 4 institutions in 4 countries.
Funding
Abstract
We present high-reflectivity substrate-transferred single-crystal GaAs/AlGaAs interference coatings at a center wavelength of 4.54 μm with record-low excess optical loss below 10 parts per million. These high-performance mirrors are realized via a novel microfabrication process that differs significantly from the production of amorphous multilayers generated via physical vapor deposition processes. This new process enables reduced scatter loss due to the low surface and interfacial roughness, while low background doping in epitaxial growth ensures strongly reduced absorption. We report on a suite of optical measurements, including cavity ring-down, transmittance spectroscopy, and direct absorption tests to reveal the optical losses for a set of prototype mirrors. In the course of these measurements, we observe a unique polarization-orientation-dependent loss mechanism which we attribute to elastic anisotropy of these strained epitaxial multilayers. A future increase in layer count and a corresponding reduction of transmittance will enable optical resonators with a finesse in excess of 100 000 in the mid-infrared spectral region, allowing for advances in high resolution spectroscopy, narrow-linewidth laser stabilization, and ultrasensitive measurements of various light-matter interactions.
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Registered trials
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