Temporal cavity solitons in a laser-based microcomb : a path to a self-starting pulsed laser without saturable absorption

Cutrona, Antonio and Hanzard, Pierre-Henry and Rowley, Maxwell and Totero Gongora, J. S. and Peccianti, Marco and Malomed, B. A. and Oppo, Gian-Luca and Pasquazi, Alessia (2021) Temporal cavity solitons in a laser-based microcomb : a path to a self-starting pulsed laser without saturable absorption. Optics Express, 29 (5). pp. 6629-6646. ISSN 1094-4087

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    Abstract

    We theoretically present a design of self-starting operation of microcombs based on laser-cavity solitons in a system composed of a micro-resonator nested in and coupled to an amplifying laser cavity. We demonstrate that it is possible to engineer the modulational-instability gain of the system's zero state to allow the start-up with a well-defined number of robust solitons. The approach can be implemented by using the system parameters, such as the cavity length mismatch and the gain shape, to control the number and repetition rate of the generated solitons. Because the setting does not require saturation of the gain, the results offer an alternative to standard techniques that provide laser mode-locking.

    ORCID iDs

    Cutrona, Antonio, Hanzard, Pierre-Henry, Rowley, Maxwell, Totero Gongora, J. S., Peccianti, Marco, Malomed, B. A., Oppo, Gian-Luca ORCID logoORCID: https://orcid.org/0000-0002-5376-4309 and Pasquazi, Alessia;