Strong-feedback regime of self-injection locking and external cavity laser

Nikita M. Kondratiev; Ramzil Galiev; Ilya Gorelov; Artem Shitikov; Valery Lobanov

doi:10.1117/12.2621209

20 May 2022 Strong-feedback regime of self-injection locking and external cavity laser

Nikita M. Kondratiev, Ramzil Galiev, Ilya Gorelov, Artem Shitikov, Valery Lobanov

Proceedings Volume 12141, Semiconductor Lasers and Laser Dynamics X; 121410K (2022) https://doi.org/10.1117/12.2621209
Event: SPIE Photonics Europe, 2022, Strasbourg, France

Conference Poster

Abstract

Realization of the coupling of the laser diode to an external reflector may provide efficient suppression of the phase noises and significant stabilization of the laser source. Locking a semiconductor laser to high-quality-factor microresonator was shown to result in a laser linewidth narrowing to sub-Hz level. The straightforward way to get better stabilization and wider locking band is to increase the feedback level. However, most of the theories used to describe the self-injection locking effect assume the weak feedback from the external reflector. Here we develop the more complete theory of the laser -- resonant reflector interaction that allows to describe this effect for the high feedback level as well. We define different possible regimes taking place at different feedback levels (including the so-called external cavity laser regime) and study applicability domains of the previous and proposed models. We show that existing model of the self-injection locking to whispering-gallery mode resonator is a consequence of the considered model in the low-feedback regime. Finally, we check the model in high-feedback limit experimentally and show a good correspondence with the theory.

Conference Presentation

Citation Download Citation

Nikita M. Kondratiev, Ramzil Galiev, Ilya Gorelov, Artem Shitikov, and Valery Lobanov "Strong-feedback regime of self-injection locking and external cavity laser", Proc. SPIE 12141, Semiconductor Lasers and Laser Dynamics X, 121410K (20 May 2022); https://doi.org/10.1117/12.2621209

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available