Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Ultrahigh finesse low mode volume Fabry-Perot microcavity



Andreas Muller, Edward B. Flagg, John R. Lawall, Glenn S. Solomon


Ultralow loss concave micromirrors with radii of curvature below 60 um were fabricated by laser ablation and reflective coatings. A 10 um long microcavity with a mode volume of 40 um^3 was set up with two such mirrors and the cavity linewidth measured both spectrally and temporally. The smallest linewidth obtained was 96 MHz, corresponding to a quality factor of 3.3x10^6 and a mirror 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.
Optics Letters


microcavity, cavity quantum electrodynamics, fabry-perot


Muller, A. , Flagg, E. , Lawall, J. and Solomon, G. (2010), Ultrahigh finesse low mode volume Fabry-Perot microcavity, Optics Letters, [online],, (Accessed June 19, 2024)


If you have any questions about this publication or are having problems accessing it, please contact

Created July 1, 2010, Updated November 29, 2022