Tm,Ho:GdVO4 crystal as saturable absorber for the passively Q-switched Tm:YAP laser

IF 3.1 3区物理与天体物理 Q2 INSTRUMENTS & INSTRUMENTATION

Infrared Physics & Technology Pub Date : 2025-02-25 DOI:10.1016/j.infrared.2025.105797

Changchang Shen , Xinlu Zhang , Panqiang Kang , Xiaofan Jing , Longyi Zhang , Bingxu Gu , Jinjer Huang

引用次数: 0

Abstract

A passively Q-switched Tm:YAP laser with Tm,Ho:GdVO₄ crystal as the saturable absorber is reported for the first time. Using a simple flat-concave cavity, a high single pulse energy and high peak power passively Q-switched Tm:YAP laser at 1984 nm was successfully achieved. At an incident pump power of 9.66 W, the maximum average output power was 571 mW, the pulse width was 235 ns, and the pulse repetition rate was 825 Hz, corresponding to the single pulse energy of 0.69 mJ and the peak power of 2.94 kW. The M² factors of the passively Q-switched Tm:YAP laser in the x and y directions were 1.32 and 1.28, respectively. This experimental results demonstrate that Tm,Ho:GdVO₄ crystal can be used as saturable absorber for the passively Q-switched solid state laser at 2 μm.

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Tm，Ho:GdVO4晶体作为被动调q Tm:YAP激光器的可饱和吸收体

首次报道了一种以Tm，Ho:GdVO4晶体为可饱和吸收体的被动调q Tm:YAP激光器。利用简单的平凹腔，成功地实现了1984 nm高单脉冲能量和峰值功率的被动调q Tm:YAP激光器。当入射泵浦功率为9.66 W时，最大平均输出功率为571 mW，脉冲宽度为235 ns，脉冲重复频率为825 Hz，对应的单脉冲能量为0.69 mJ，峰值功率为2.94 kW。被动调q Tm:YAP激光器在x方向和y方向的M2因子分别为1.32和1.28。实验结果表明，Tm，Ho:GdVO4晶体可以作为2 μm被动调q固体激光器的可饱和吸收体。

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来源期刊

Infrared Physics & Technology 物理-光学

CiteScore

5.70

自引率

12.10%

发文量

400

审稿时长

67 days

期刊介绍： The Journal covers the entire field of infrared physics and technology: theory, experiment, application, devices and instrumentation. Infrared'' is defined as covering the near, mid and far infrared (terahertz) regions from 0.75um (750nm) to 1mm (300GHz.) Submissions in the 300GHz to 100GHz region may be accepted at the editors discretion if their content is relevant to shorter wavelengths. Submissions must be primarily concerned with and directly relevant to this spectral region. Its core topics can be summarized as the generation, propagation and detection, of infrared radiation; the associated optics, materials and devices; and its use in all fields of science, industry, engineering and medicine. Infrared techniques occur in many different fields, notably spectroscopy and interferometry; material characterization and processing; atmospheric physics, astronomy and space research. Scientific aspects include lasers, quantum optics, quantum electronics, image processing and semiconductor physics. Some important applications are medical diagnostics and treatment, industrial inspection and environmental monitoring.