Absolute frequency synthesis of pulsed coherent light waves through phase-modulation active optical feedback

Kaoru Shimizu, Tsuneo Horiguchi, Yahei Koyamada

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

A novel method for the broadband absolute frequency synthesis of pulsed coherent lightwaves is demonstrated. It is based on pulse recirculation around an active optical feedback ring containing a delay-line fiber, an external phase modulator, an acousto-optic frequency shifter (AOFS), and a high-finesse Fabry-Perot étalon. The modulation frequency FM and the frequency shift FAO that are due to AOFS are designed so that their sum or difference equals the free-spectral range of the étalon and FAO is set at larger than the half-width at full maximum of its resonant peaks. If one of the peak frequencies is tuned to the frequency of the initial pulse, the frequency of the recirculating pulse jumps to the next peak for each round trip. In the experiment the absolute frequency is synthesized over a frequency span of 700 GHz around the initial stabilized frequency of the master laser.

Original languageEnglish
Pages (from-to)1824-1826
Number of pages3
JournalOptics Letters
Volume21
Issue number22
DOIs
Publication statusPublished - 1996 Nov 15

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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