A Littrow-type diode laser with independent control of cavity length and grating rotation

L. Duca; E. Perego; Carlo S.

doi:10.1117/12.2621251

20 May 2022 A Littrow-type diode laser with independent control of cavity length and grating rotation

L. Duca, E. Perego, Carlo S.

Proceedings Volume 12141, Semiconductor Lasers and Laser Dynamics X; 1214106 (2022) https://doi.org/10.1117/12.2621251
Event: SPIE Photonics Europe, 2022, Strasbourg, France

Abstract

We present our patented extended-cavity diode laser (ECDL) based on a modified Littrow configuration. Here, the coarse wavelength adjustment via the rotation of a diffraction grating is decoupled from the fine tuning of the external cavity modes by positioning a piezoelectric transducer behind the diode laser. As a result, the fine adjustment of the laser frequency with the piezo does not affect neither the optical feedback alignment nor the broader grating frequency selection curve, resulting in a better mode-hop stable performance compared to the one of standard Littrow ECDLs without optimized pivotal point. We characterize the design and show that it is well suited to atomic and molecular experiments demanding a high level of stability over time and for long cavities ECDLs.

Conference Presentation

Citation Download Citation

L. Duca, E. Perego, and Carlo S. "A Littrow-type diode laser with independent control of cavity length and grating rotation", Proc. SPIE 12141, Semiconductor Lasers and Laser Dynamics X, 1214106 (20 May 2022); https://doi.org/10.1117/12.2621251

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