2.05 µm 波长的 2 W 连续波和无源 Q 开关 Tm,Ho:YLF 沟道波导激光器。

IF 3.1 2区物理与天体物理 Q2 OPTICS

Optics letters Pub Date : 2024-12-15 DOI:10.1364/OL.544317

Berke Ayevi, Yagız Morova, Berna Morova, Eugenio Damiano, Mauro Tonelli, Alphan Sennaroglu

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引用次数: 0

摘要

我们报告了一种高效的 Tm、Ho：YLF 凹陷包层沟道波导激光器在连续波 (CW) 和被动 Q 开关 (PQS) 两种状态下的运行情况，它能产生波长为 2.05 µm 的激光发射。利用飞秒激光刻蚀技术制作的直径为 70 微米的凹陷包层波导的传播损耗值低至 0.14 dB/cm，折射率对比度为 8.3 × 10-4。在 CW 模式下，波导激光器在 780 nm 波长处被激发，在入射泵浦功率为 4.14 W 时可产生高达 2 W 的输出功率，功率斜率效率为 50.0%。通过使用铬：锌硒可饱和吸收器（SA），波导激光器进一步实现了 PQS 操作，产生了短至 19.6-ns 的脉冲，功率斜率效率为 18.9%。

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2-W continuous-wave and passively Q-switched Tm,Ho:YLF channeled waveguide laser at 2.05 µm.

We report on the operation of an efficient Tm,Ho:YLF depressed cladding, channeled waveguide laser in both continuous-wave (CW) and passively Q-switched (PQS) regimes, producing laser emission at the wavelength of 2.05 µm. The 70-µm diameter depressed cladding waveguide, fabricated using femtosecond laser inscription, had a low propagation loss value of 0.14 dB/cm and a refractive index contrast of 8.3 × 10^-4. In the CW regime, the waveguide laser was excited at 780 nm, and an output power of up to 2 W was generated at the incident pump power of 4.14 W with a power slope efficiency of 50.0%. PQS operation was further realized by utilizing a Cr:ZnSe saturable absorber (SA), whereby the waveguide laser generated as short as 19.6-ns pulses with a power slope efficiency of 18.9%.

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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.