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首页> 美国卫生研究院文献>Nanomaterials >TiOxNy Thin Film Sputtered on a Fiber Ball Lens as Saturable Absorber for Passive Q-Switched Generation of a Single-Tunable/Dual-Wavelength Er-Yb Double Clad Fiber Laser
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TiOxNy Thin Film Sputtered on a Fiber Ball Lens as Saturable Absorber for Passive Q-Switched Generation of a Single-Tunable/Dual-Wavelength Er-Yb Double Clad Fiber Laser

机译：TiOxNy薄膜溅射在光纤球透镜上作为可饱和吸收剂用于被动调Q生成单波长/双波长Er-Yb双包层光纤激光器

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摘要

The use of titanium oxynitride (TiO N ) thin films as a saturable absorber (SA) element for generation of passive Q-switched (PQS) laser pulses, from a linear cavity Er-Yb double-clad fiber (EYDCF) laser, is demonstrated. Additionally, the deposition of the material as a thin film covering a fiber micro-ball lens (MBL) structure is reported for the first time. The TiO N coating is deposited by a direct current (DC) magnetron-sputtering technique. The MBL is inserted within the laser cavity in a reflection configuration, alongside a reflecting mirror. As a result, the coated fiber MBL simultaneously acts as a SA element for PQS laser pulses generation and as an interference filter for wavelength selection and tuning of the generated laser line. Tunable single-laser emission in a wavelength range limited by dual-wavelength laser generation at 1541.96 and 1547.04 nm is obtained. PQS laser pulses with a repetition rate from 18.67 to 124.04 kHz, minimum pulse duration of 3.57 µs, maximum peak power of 0.359 W, and pulse energy of 1.28 µJ were obtained in a pump power range from 1 to 1.712 W.
机译：演示了使用氧氮化钛（TiO N）薄膜作为可饱和吸收体（SA）元件从线性腔Er-Yb双层光纤（EYDCF）激光器产生无源Q开关（PQS）激光脉冲的情况。 。另外，首次报道了材料沉积为覆盖纤维微球透镜（MBL）结构的薄膜。 TiO N涂层是通过直流（DC）磁控溅射技术沉积的。 MBL以反射配置以及反射镜的形式插入激光腔内。结果，涂覆的纤维MBL同时用作用于PQS激光脉冲生成的SA元件，并且用作用于波长选择和所生成的激光线的调谐的干涉滤光片。在1541.96和1547.04 nm处获得了受双波长激光产生限制的波长范围内的可调单激光发射。在1至1.712 W的泵浦功率范围内，获得了PQS激光脉冲，其重复频率为18.67至124.04 kHz，最小脉冲持续时间为3.57 µs，最大峰值功率为0.359 W，脉冲能量为1.28 µJ。

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