1550纳米的石墨烯调Q铒镱共掺钆铝硼酸盐激光器

Graphene Q-switched Er,Yb:GdAl(BO) laser at 1550 nm.

作者信息

Gorbachenya Konstantin, Kisel Viktor, Yasukevich Anatoly, Loiko Pavel, Mateos Xavier, Maltsev Viktor, Leonyuk Nikolai, Aguiló Magdalena, Díaz Francesc, Griebner Uwe, Petrov Valentin, Kuleshov Nikolai

出版信息

Appl Opt. 2017 Jun 1;56(16):4745-4749. doi: 10.1364/AO.56.004745.

DOI:10.1364/AO.56.004745

PMID:29047610

Abstract

A single-layer graphene saturable absorber is employed for passive Q-switching of an Er, Yb:GdAl(BO) (Er,Yb:GdAB) compact laser, representing the first Er-doped oxoborate laser Q-switched by graphene. This laser is based on a c-cut 1.8 at. % Er, 15 at. % Yb:GdAB crystal diode-pumped at 0.976 μm. It generates a maximum average output power of 360 mW at 1.55 μm with a slope efficiency of 23% (with respect to the incident power). Stable ∼1 μJ/130 ns pulses are achieved at a repetition rate of 400 kHz. This result represents, to the best of our knowledge, the shortest pulse duration ever achieved in bulk Er lasers Q-switched by 2D materials. Graphene is a promising material for generating nanosecond pulses at high repetition rates (MHz range) in Er-doped oxoborate lasers emitting in the eye-safe range at 1.5-1.7 μm.

摘要

采用单层石墨烯可饱和吸收体对掺铒、镱的钆铝硼酸盐（Er,Yb:GdAB）紧凑型激光器进行被动调Q，这是首例由石墨烯调Q的掺铒含氧硼酸盐激光器。该激光器基于c切割的1.8原子百分比铒、15原子百分比镱的GdAB晶体，由0.976μm的二极管泵浦。它在1.55μm处产生的最大平均输出功率为360mW，斜率效率为23%（相对于入射功率）。在400kHz的重复频率下实现了稳定的约1μJ/130ns脉冲。据我们所知，这一结果代表了二维材料调Q的块状掺铒激光器所实现的最短脉冲持续时间。石墨烯是一种很有前景的材料，可用于在1.5 - 1.7μm的人眼安全范围内发射的掺铒含氧硼酸盐激光器中以高重复频率（MHz范围）产生纳秒脉冲。