用于2µm波长区域高功率激光器波长和偏振选择的谐振光栅

IF 2 3区物理与天体物理 Q3 OPTICS

Applied Physics B Pub Date : 2025-02-24 DOI:10.1007/s00340-025-08410-5

Danish Bashir, Georgia Mourkioti, Ayoub Boubekraoui, Sergei Tomilov, Mykyta Redkin, Clara J. Saraceno, Thomas Graf, Jacob I. Mackenzie, Marwan Abdou Ahmed

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引用次数: 0

摘要

本文设计、制作并实现了一种适用于2 μm波长区域激光工作的单层谐振反射光栅波导结构（RR-GWS）。RR-GWS在1.9 μm到2.1 μm的宽光谱范围内有效工作。反射率测量证实了该结构在该光谱区域内的宽带性能，具有99%的共振反射率。将其应用于Ho: YAG薄盘激光系统中，作为空腔折叠镜，在波长和偏振选择方面表现出了良好的功率处理能力和效率。2 μm激光系统的线偏振输出功率为36 W，光效率为34.6%。此外，该激光器的光谱带宽为0.5 nm，即比等效全反射镜参考腔窄12倍。

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Resonant grating for wavelength and polarization selection in high-power lasers emitting in the 2-µm wavelength region

This paper presents the design, fabrication, and implementation of a single-layer resonant-reflection grating-waveguide structure (RR-GWS) optimized for laser operation in the 2 μm wavelength region. The RR-GWS was designed to function effectively across a broad spectral region ranging from 1.9 μm to 2.1 μm. Reflectance measurements confirmed the structure’s wideband performance within this spectral region, with 99% resonant reflectivity. Incorporating the RR-GWS into a Ho: YAG thin-disk laser system, as a cavity folding mirror, it demonstrated very good power-handling capability and efficacy in wavelength and polarization selection. The 2 μm laser system achieved a linearly polarized output power of 36 W, with an optical efficiency of 34.6%. Additionally, the laser demonstrated a spectral bandwidth of < 0.5 nm full width at half maximum, i.e., 12 times narrower than that obtained with an equivalent all-mirror reference cavity.

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来源期刊

Applied Physics B 物理-光学

CiteScore

4.00

自引率

4.80%

发文量

202

审稿时长

3.0 months

期刊介绍： Features publication of experimental and theoretical investigations in applied physics Offers invited reviews in addition to regular papers Coverage includes laser physics, linear and nonlinear optics, ultrafast phenomena, photonic devices, optical and laser materials, quantum optics, laser spectroscopy of atoms, molecules and clusters, and more 94% of authors who answered a survey reported that they would definitely publish or probably publish in the journal again Publishing essential research results in two of the most important areas of applied physics, both Applied Physics sections figure among the top most cited journals in this field. In addition to regular papers Applied Physics B: Lasers and Optics features invited reviews. Fields of topical interest are covered by feature issues. The journal also includes a rapid communication section for the speedy publication of important and particularly interesting results.