arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2008.07193physics.opticsastro-ph.IMquant-ph
收藏

简并光参量振荡高效产生2128 nm相干光

Highly-efficient generation of coherent light at 2128 nm via degenerate optical-parametric oscillation

Christian Darsow-Fromm, Maik Schröder, Julian Gurs, Roman Schnabel, Sebastian Steinlechner

备注：
To be published in Optics Letters
阅读 PDF
arXiv 页面 ↗HTML 原文 ↗

摘要：

低温操作与新的测试质量材料相结合，有望降低引力波探测器热噪声的灵敏度限制。目前正在讨论的最先进的材料是晶体硅作为基板与非晶硅基涂层。然而，它们需要约2 $\mathrmμ$ m的工作波长以避免激光吸收。在这里，我们提出了一种基于简并光学参量振荡器（DOPO）的2128 nm光源，以转换来自1064 nm非平面环形振荡器（NPRO）的光。在泵浦功率为52 mW的PPKTP（极化磷酸钛氧钾，内转换效率为94%）中，我们获得了$(88.3\,\pm\,1.4)\,\%$的外转换效率，由此我们推断出$(4.75\,\pm\,0.18)\,\mathrm{pm/V}$的有效非线性。利用我们的方法，来自已建立和现有激光源的光可以有效地转换到2 $\mathrmμ$ m范围，同时保持优异的稳定性。

英文摘要：

Cryogenic operation in conjunction with new test-mass materials promises to reduce the sensitivity limitations from thermal noise in gravitational-wave detectors. The currently most advanced materials under discussion are crystalline silicon as a substrate with amorphous silicon-based coatings. They require, however, operational wavelengths around 2 $\mathrmμ$m to avoid laser absorption. Here, we present a light source at 2128 nm based on a degenerate optical parametric oscillator (DOPO) to convert light from a 1064 nm non-planar ring-oscillator (NPRO). We achieve an external conversion efficiency of $(88.3\,\pm\,1.4)\,\%$ at a pump power of 52 mW in PPKTP (periodically-poled potassium titanyl phosphate, internal efficiency was 94 %), from which we infer an effective non-linearity of $(4.75\,\pm\,0.18)\,\mathrm{pm/V}$. With our approach, light from the established and existing laser sources can be efficiently converted to the 2 $\mathrmμ$m regime, while retaining the excellent stability properties.

机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。

↑