Stable coherent mode-locking based on π pulse formation in single-section lasers

authored by

Rostislav Arkhipov, Anton Pakhomov, Mikhail Arkhipov, Ihar Babushkin, Nikolay Rosanov

Abstract

Here we consider coherent mode-locking (CML) regimes in single-section cavity lasers, taking place for pulse durations less than atomic population and phase relaxation times, which arise due to coherent Rabi oscillations of the atomic inversion. Typically, CML is introduced for lasers with two sections, the gain and absorber ones. Here we show that, for certain combination of the cavity length and relaxation parameters, a very stable CML in a laser, containing only gain section, may arise. The mode-locking is unconditionally self-starting and appears due to balance of intra-pulse de-excitation and slow interpulse-scale pump-induced relaxation processes. We also discuss the scaling of the system to shorter pulse durations, showing a possibility of mode-locking for few-cycle pulses.

Organisation(s)

Institute of Quantum Optics
PhoenixD: Photonics, Optics, and Engineering - Innovation Across Disciplines

External Organisation(s)

Saint Petersburg State University
St. Petersburg National Research University of Information Technologies, Mechanics and Optics (ITMO)
RAS - Ioffe Physico Technical Institute
Max Born Institute for Nonlinear Optics and Short Pulse Spectroscopy im Forschungsbund Berlin e.V. (MBI)

Type

Article

Journal

Scientific reports

Volume

11

ISSN

2045-2322

Publication date

13.01.2021

Publication status

Published

Peer reviewed

Yes

ASJC Scopus subject areas

General

Electronic version(s)

https://doi.org/10.1038/s41598-020-80775-3 (Access: Open)