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Stability enhancement of quantum dot comb lasers

Authors: Liang, N., Yang, B., Chen, J., Cui, X., Qin, J., Wang, Z., Zhang, J. and Wang, T.

Journal: Proceedings of SPIE the International Society for Optical Engineering

Volume: 13712

eISSN: 1996-756X

ISSN: 0277-786X

DOI: 10.1117/12.3074567

Abstract:

The stability of multi-wavelength quantum dot (QD) comb lasers is essential for their practical application but remains a significant technical challenge. This study experimentally investigates the impact of a 48-hour burn-in process at 85 °C on QD comb lasers operated at 2×Ith and 3×Ith. The results indicate that the burn-in process accelerates the transition from unstable to stable operation. After burn-in, lasers exhibit broadened optical bandwidths, enhanced mode-locking, and uniform comb channel distribution. These findings demonstrate that an optimized burn-in process can effectively enhance the stability of QD comb lasers.

Source: Scopus