用于在1微米波段产生调Q光纤激光器的二氧化钛光纤饱和吸收体。

Titanium dioxide fiber saturable absorber for Q-switched fiber laser generation in the 1-micrometer region.

作者信息

Rahman M F A, Reddy P H, Paul M C, Das S, Dhar A, Baharom M F, Latiff A A, Rusdi M F M, Wang P, Dimyati K, Harun S W

出版信息

Appl Opt. 2019 May 1;58(13):3495-3500. doi: 10.1364/AO.58.003495.

DOI:10.1364/AO.58.003495

Abstract

A passively Q-switched ytterbium-doped fiber laser (YDFL) operating at 1062 nm was demonstrated by using a segment of 20 cm titanium dioxide-doped fiber saturable absorber (TiODF SA). The Q-switched YDFL emerged stably with tunable repetition rates ranging from 32 kHz to 53 kHz as the pump power rose from 109 mW to 233 mW. Within this range of pump power, a maximum output power of 10.1 mW, maximum peak power of 75 mW, and maximum pulse energy of 191 nJ were obtained. The narrowest pulse width of 2.55 μs was attained at the maximum pump power of 233 mW, while the signal-to-noise ratio of the fundamental frequency was 47 dB. This demonstration reveals that the proposed TiODF SA is feasible for constructing a flexible and reliably stable Q-switched pulsed fiber laser in the 1-micrometer region.

摘要

通过使用一段20厘米长的二氧化钛掺杂光纤饱和吸收体（TiODF SA），演示了一种工作在1062纳米的被动调Q掺镱光纤激光器（YDFL）。随着泵浦功率从109毫瓦增加到233毫瓦，调Q YDFL以32千赫兹至53千赫兹的可调重复频率稳定出现。在此泵浦功率范围内，获得了10.1毫瓦的最大输出功率、75毫瓦的最大峰值功率和191纳焦的最大脉冲能量。在233毫瓦的最大泵浦功率下，获得了2.55微秒的最窄脉冲宽度，而基频的信噪比为47分贝。该演示表明，所提出的TiODF SA对于在1微米区域构建灵活且可靠稳定的调Q脉冲光纤激光器是可行的。