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Poster communications

A "dual", feed-forward + feed-back frequency control for efficient and convenient diode laser line narrowing

Abstract : DFB diode lasers have linewidths in the MHz range. Narrowing the linewidth can be obtained by locking the diode to a frequency discriminator (Michelson interferometer,...). But the lock bandwidth has to reach 10 MHz or higher. The current-to-frequency transfer function of DFB lasers is complex: thermal effects at low frequency, carrier physics at high frequency, and a [1MHz-20MHz] transition zone in which the phase and amplitude show variations that prevent from locking in the MHz range. Adding a phase modulator in feed-forward (FF) configuration allows convenient control of the laser frequency, in excess of 15MHz, and convenient+efficient line narrowing with commercial, off the shelf components of the telecom industry.
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Poster communications
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https://hal.archives-ouvertes.fr/hal-01476870
Contributor : Michel Lintz <>
Submitted on : Sunday, February 26, 2017 - 10:25:24 AM
Last modification on : Tuesday, May 26, 2020 - 6:50:44 PM
Document(s) archivé(s) le : Saturday, May 27, 2017 - 12:19:38 PM

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  • HAL Id : hal-01476870, version 1

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Michel Lintz, Duy-Hà Phung, Jean-Pierre Coulon, Benoit Faure, Thomas Leveque. A "dual", feed-forward + feed-back frequency control for efficient and convenient diode laser line narrowing. ICSO, International Conference on Space Optics, Oct 2016, Biarritz, France. 2016. ⟨hal-01476870⟩

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