External cavity second-Stokes Raman laser based on potassium yttrium tungstate (KYW) crystal

IF 2.2 3区物理与天体物理 Q2 OPTICS

Optics Communications Pub Date : 2025-03-27 DOI:10.1016/j.optcom.2025.131806

Guorui Lv , Lei Guo , Haiping Xu , Xian-An Dou , Qing Ye , Hui Kong , Yaling Yang , Jintian Bian , Nanxiang Zhao , Zefeng Wang , Kejian Yang , Jianjun Zhang

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引用次数: 0

Abstract

We present an external-cavity potassium yttrium tungstate (KYW) second-Stokes Raman laser with strong pulse compression capability. A linearly polarized 1064 nm Nd:YAG laser is used as the pump source with a pulse width of 236 ns and a repetition frequency of 10 kHz. Under the maximum pump power of 22 W, the Stokes output power of 1.06 W is obtained at 1318 nm with a slope efficiency of 8.5 %, and the corresponding pulse width is reduced to 24 ns with a compression ratio of ∼10. And the generation process of second-Stokes pulse is simulated theoretically based on the steady-state stimulated Raman coupled wave theory. As far as we know, this is the first watt-level second-Stokes Raman laser based on KYW crystal. In addition, the cross-cascade mechanism of second-Stokes is studied among 905 cm⁻¹, 765 cm⁻¹ and 87 cm⁻¹ modes, which demonstrates the potential of KYW crystal in multi-wavelength Raman lasers.

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基于钨酸钇钾（KYW）晶体的外腔二次斯托克斯拉曼激光器

提出了一种具有强脉冲压缩能力的外腔钨酸钇钾（KYW）秒-斯托克斯拉曼激光器。采用线偏振1064 nm Nd:YAG激光器作为泵浦源，脉冲宽度为236 ns，重复频率为10 kHz。在最大泵浦功率为22 W的情况下，在1318 nm处获得1.06 W的Stokes输出功率，斜率效率为8.5%，相应的脉冲宽度减小到24 ns，压缩比为~ 10。基于稳态受激拉曼耦合波理论，对二次斯托克斯脉冲的产生过程进行了理论模拟。据我们所知，这是第一个基于KYW晶体的瓦级第二斯托克斯拉曼激光器。此外，还研究了905 cm−1、765 cm−1和87 cm−1模式下的二阶stokes交叉串级机制，证明了KYW晶体在多波长拉曼激光器中的潜力。

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来源期刊

Optics Communications 物理-光学

CiteScore

5.10

自引率

8.30%

发文量

681

审稿时长

38 days

期刊介绍： Optics Communications invites original and timely contributions containing new results in various fields of optics and photonics. The journal considers theoretical and experimental research in areas ranging from the fundamental properties of light to technological applications. Topics covered include classical and quantum optics, optical physics and light-matter interactions, lasers, imaging, guided-wave optics and optical information processing. Manuscripts should offer clear evidence of novelty and significance. Papers concentrating on mathematical and computational issues, with limited connection to optics, are not suitable for publication in the Journal. Similarly, small technical advances, or papers concerned only with engineering applications or issues of materials science fall outside the journal scope.