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Updated: Jun 19, 2026

Characterizing Far-infrared Laser Emissions and the Measurement of Their Frequencies
Published on: December 18, 2015
Absolute frequency measurement of the molecular iodine hyperfine components near 560 nm with a solid-state laser
1Max-Planck Institute for the Science of Light, Institute of Optics, Information, and Photonics, University of Erlangen, 91058 Erlangen, Germany.
Abstract:
We report absolute frequency measurements of the molecular iodine R(34) 20-0 a(1), a(10), and a(15) hyperfine transitions, and the P(144) 23-0 a(1) hyperfine transition at 560 nm with a frequency comb. The light source is based on an all-solid-state frequency quadrupled laser system. A frequency stability of 4x10(-12) is achieved over a 100 s integration time when the light source is frequency stabilized to the R(34) 20-0 a(1) line. The pressure and power broadening dependences of the R(34) 20-0 a(10) line are also investigated.
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