Recent advances in laser self-injection locking to high-Q microresonators

• DOI: 10.1007/s11467-022-1245-3
• Publication Date: 2023-03-07T05:02:36Z
• Authors: Nikita M. Kondratiev; Valery E. Lobanov; Artem E. Shitikov; Ramzil R. Galiev; Dmitry A. Chermos...; Nikita Yu. Dmitriev; Andrey N. Danilin; Evgeny A. Lonshakov; Kirill N. Min’kov; Daria M. Sokol; Steevy J. Cordette; Yi-Han Luo; Wei Liang; Junqiu Liu; Igor A. Bilenko
• Keywords: Laser linewidth; Injection locking

Abstract The stabilization and manipulation of laser frequency by means an external cavity are nearly ubiquitously used in fundamental research applications. While most the light transmits through cavity, presence some back-scattered from to laser, self-injection locking effect can take place, which locks emission mode similar frequency. leads dramatic reduction linewidth noise. Using this approach, a common semiconductor locked ultrahigh- Q microresonator obtain sub-Hertz linewidth, on par with state-of-the-art fiber lasers. Therefore it paves way manufacture high-performance lasers reduced footprint cost. Moreover, high power, optical nonlinearity drastically changes dynamics, offering routes for simultaneous pulse comb generation same microresonator. Particularly, integrated photonics technology, enabling components fabricated via CMOS process, has brought increasing extending interest manufacturing using method. In article, we present comprehensive tutorial analytical numerical methods locking, as well review recent theoretical experimental achievements.