Ultrahigh-Finesse, Low-Mode-Volume Fabry–Perot Microcavity
Abstract
Ultralow-loss concave micromirrors with radius of curvature below 60 microm were fabricated by laser ablation and reflective coatings. A 10-microm-long microcavity with a mode volume of 40 microm(3) was set up with two such mirrors, and the cavity linewidth was measured both spectrally and temporally. The smallest linewidth obtained was 96 MHz, corresponding to a quality factor of 3.3x10(6) and a finesse in excess of 1.5x10(5). With these parameters, we estimate that a variety of solid-state quantum emitters coupled to the cavity may enter the strong coupling regime.
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In conventional dielectric cavities, the effective volume cannot fall below the order of ∼(λc/2n)^3; in planar microcavities, the effective volume can be approximated by the effective cavity length.
“Since the effective volume (Veff ) depends on the electric field distribution (E ( → r ) ) and the relative permittivity of the medium ( ε ( → r ) ), in conventional dielectric cavities, it cannot fall below the order ∼ ( λ c /2 n ) 3 . However, the effective volume can be approximated by the effective cavity length (Leff ) in the case of a planar configuration of the microcavities [280-282]:”
From Metal Oxide Thin Films for Advanced Photonic Applications (2026) · cites this paper as [281]
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References 27 · Cited by 116
- Authors
- Muller, A., Flagg, E. B., Lawall, J. R., & Solomon, G. S.
- Affiliations
- National Institute of Standards and Technology (US)
- Venue
- Optics Letters
- Publisher
- Optica Publishing Group
- Published
- 2010-06-30
- Volume
- 35
- Issue
- 13
- Pages
- 2293
- ISSN
- 0146-9592 (ISSN-L)
- 1539-4794
- OpenAlex
- W2121112939
- Cited by
- 116
- References
- 27
- Citations by year
- 2026: 5 · 2025: 4 · 2024: 10 · 2023: 6 · 2022: 6 · 2021: 8 · 2020: 9 · 2019: 6 · 2018: 6 · 2017: 5 · 2016: 11 · 2015: 16 · 2014: 8 · 2013: 4 · 2012: 4
- FWCI
- 2.40
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Optics Letters (publishedVersion)
- PubMed (publishedVersion)
- Funders
- National Science Foundation (NSF)
- Topics
- Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Strong Light-Matter Interactions
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Photonic and Optical Devices
- Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Mechanical and Optical Resonators
- Keywords
- Fabry-Perot microcavity, laser ablation, reflective coatings, cavity linewidth, quality factor, strong coupling, solid-state quantum emitters, microcavity quantum electrodynamics
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