基于锑化镓半导体可饱和吸收镜锁模的2.8微米保偏铒光纤激光器

2.8-µm polarization-maintaining Er fiber laser mode-locked by a GaSb-based SESAM.

作者信息

Normani Simone, Idlahcen Saïd, Loiko Pavel, Hatim Saad, Hanzard Pierre-Henry, De Paula Alisson Rodrigues, Guillemot Lauren, Godin Thomas, Berthelot Thibaud, Cozic Solenn, Poulain Samuel, Koivusalo Eero, Guina Mircea, Camy Patrice, Hideur Ammar

出版信息

Opt Express. 2024 Apr 22;32(9):15106-15114. doi: 10.1364/OE.517526.

DOI:10.1364/OE.517526

PMID:38859169

Abstract

A GaSb-based SEmiconductor Saturable Absorber Mirror (SESAM) enables continuous-wave picosecond mode-locked operation with excellent stability of a polarization-maintaining mid-infrared Er:ZBLAN fiber laser. The GaSb-based SESAM mode-locked fiber laser delivers an average output power of 190 mW at 2.76 µm at a repetition rate of 32.07 MHz (corresponding to a pulse energy of ∼6 nJ) and exhibits a high signal-to-noise ratio of ∼80 dB. The polarization extinction ratio is more than 23 dB. By employing an intracavity diffraction grating, the laser wavelength is continuously tunable across 2.706-2.816 µm. Passively Q-switched operation of this laser is also demonstrated.

摘要

基于锑化镓的半导体可饱和吸收镜（SESAM）可实现连续波皮秒锁模运转，使保偏中红外铒镱共掺氟化物（Er:ZBLAN）光纤激光器具有出色的稳定性。基于锑化镓的SESAM锁模光纤激光器在2.76 µm波长、32.07 MHz重复频率下的平均输出功率为190 mW（对应脉冲能量约为6 nJ），并呈现出约80 dB的高信噪比。偏振消光比超过23 dB。通过采用腔内衍射光栅，激光波长可在2.706 - 2.816 µm范围内连续调谐。还展示了该激光器的被动调Q运转。