4.5 W Er-doped ZBLAN fiber laser at 3.78 μm.

IF 3.1 2区物理与天体物理 Q2 OPTICS

Optics letters Pub Date : 2025-04-01 DOI:10.1364/OL.554676

Lu Zhang, Shijie Fu, Quan Sheng, Xuewen Luo, Junxiang Zhang, Chunpeng Shi, Wei Shi, Jianquan Yao

引用次数: 0

Abstract

In this work, we demonstrate an efficient long-wavelength operation of an Er-doped ZBLAN fiber laser in the 3.5 μm band with ⁴F_9/2→⁴I_9/2 transition. A high-transmission bandpass filter (BPF) is employed in the laser cavity to select a specific lasing wavelength of around 3.78 μm. The fiber laser yields a maximum output power of 4.5 W at 3781.6 nm, with a slope efficiency (with respect to the absorbed 1990 nm pump power) of 17.1% and a spectral linewidth of 0.17 nm. This work represents the highest, to the best of our knowledge, output power ever achieved in fiber lasers beyond 3.7 μm. Wavelength tuning from 3770 nm to 3782 nm, without laser power degradation, is also achieved by rotating the filter.

查看原文本刊更多论文

3.78 μm的4.5 W掺铒ZBLAN光纤激光器。

在这项工作中，我们证明了掺铒ZBLAN光纤激光器在3.5 μm波段具有4F9/2→4I9/2跃迁的高效长波工作。在激光腔内采用高透射带通滤波器（BPF）选择3.78 μm左右的特定激光波长。光纤激光器在3781.6 nm处的最大输出功率为4.5 W，斜率效率（相对于吸收的1990 nm泵浦功率）为17.1%，谱线宽度为0.17 nm。据我们所知，这项工作代表了3.7 μm以上光纤激光器的最高输出功率。波长调谐从3770 nm到3782 nm，没有激光功率下降，也实现了旋转滤光片。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Optics letters 物理-光学

CiteScore

6.60

自引率

8.30%

发文量

2275

审稿时长

1.7 months

期刊介绍： The Optical Society (OSA) publishes high-quality, peer-reviewed articles in its portfolio of journals, which serve the full breadth of the optics and photonics community. Optics Letters offers rapid dissemination of new results in all areas of optics with short, original, peer-reviewed communications. Optics Letters covers the latest research in optical science, including optical measurements, optical components and devices, atmospheric optics, biomedical optics, Fourier optics, integrated optics, optical processing, optoelectronics, lasers, nonlinear optics, optical storage and holography, optical coherence, polarization, quantum electronics, ultrafast optical phenomena, photonic crystals, and fiber optics. Criteria used in determining acceptability of contributions include newsworthiness to a substantial part of the optics community and the effect of rapid publication on the research of others. This journal, published twice each month, is where readers look for the latest discoveries in optics.