对波长 1550 nm 低至 8 K 的光学元件进行鉴定

IF 1.8 3区工程技术 Q3 PHYSICS, APPLIED

Cryogenics Pub Date : 2024-07-18 DOI:10.1016/j.cryogenics.2024.103895

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引用次数: 0

摘要

热噪声源与未来的引力波探测器息息相关，因为未来的引力波探测器会提高灵敏度，尤其是在频率低于...的情况下。由于大多数热噪声源会随温度的平方根变化，因此冷却关键光学元件及其悬浮系统至关重要。这也要求在最后悬浮阶段采用的所有技术（包括位移和惯性传感器）具有更广泛的温度兼容性。我们展示并鉴定了一种用于稳定光源和光强传感的装置，其温度范围从 300 到......。对商用准直器和光纤进行了测试，以便在低温环境中使用来自稳定激光源的光。我们还对光电二极管的多种半导体成分进行了研究，并确定了一种在...温度下具有高稳定响应度的解决方案。

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Characterizing 1550 nm optical components down to 8 K

Thermal noise sources are relevant for future gravitational wave detectors due to the foreseen increase in sensitivity, especially at frequencies below

. As most thermal noise sources scale with the square root of the temperature, cooling critical optical components and their suspension system is essential. This also requires a much wider range of temperature compatibility from all technology deployed in the last suspension stages, including displacement and inertial sensors. We demonstrate and characterize a setup for stable light sources and light intensity sensing for temperatures from 300 to

. Commercial collimators and fibers were tested to use light from stabilized laser sources in the cryogenic environment. We also investigated multiple semiconductor compositions of photodiodes and identified a solution with high and stable responsivity at

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来源期刊

Cryogenics 物理-热力学

CiteScore

3.80

自引率

9.50%

发文量

审稿时长

2.1 months

期刊介绍： Cryogenics is the world''s leading journal focusing on all aspects of cryoengineering and cryogenics. Papers published in Cryogenics cover a wide variety of subjects in low temperature engineering and research. Among the areas covered are: - Applications of superconductivity: magnets, electronics, devices - Superconductors and their properties - Properties of materials: metals, alloys, composites, polymers, insulations - New applications of cryogenic technology to processes, devices, machinery - Refrigeration and liquefaction technology - Thermodynamics - Fluid properties and fluid mechanics - Heat transfer - Thermometry and measurement science - Cryogenics in medicine - Cryoelectronics