论文标题
μ-规格集成光谱仪的光学表征和测试床开发
Optical Characterization & Testbed Development for μ-Spec Integrated Spectrometers
论文作者
论文摘要
本文描述了开发的低温光学测试床，以表征专用稀释冰箱（DR）系统中的U-Spec光谱仪。 U-Spec是一个远红外的集成光谱仪，是对罗兰型光栅光谱仪的类似物。它采用单晶硅底物，带有尼布尔微带线和铝动力电感探测器（儿童）。目前的分辨率为512的设计正在制造中，以使其大肆宣传（低温大量孔径映射）气球任务。初级光谱仪性能和设计参数是每个通道的效率，NEP，通道间隔离，光谱分辨率和频率响应。在这里，我们介绍了光学表征设施的开发和设计，以及该设施具有较早原型r = 64个设备的初步验证。我们已经使用扫描的光固定线来源进行并描述了R = 64个设备的初始光学测量。我们还讨论了此新测试床中Amaim r = 512 U-Spec设备的光学表征的测试计划。
This paper describes a cryogenic optical testbed developed to characterize u-Spec spectrometers in a dedicated dilution refrigerator (DR) system. u-Spec is a far-infrared integrated spectrometer that is an analog to a Rowland-type grating spectrometer. It employs a single-crystal silicon substrate with niobium microstrip lines and aluminum kinetic inductance detectors (KIDs). Current designs with a resolution of 512 are in fabrication for the EXCLAIM (Experiment for Cryogenic Large Aperture Intensity Mapping) balloon mission. The primary spectrometer performance and design parameters are efficiency, NEP, inter-channel isolation, spectral resolution, and frequency response for each channel. Here we present the development and design of an optical characterization facility and preliminary validation of that facility with earlier prototype R=64 devices. We have conducted and describe initial optical measurements of R = 64 devices using a swept photomixer line source. We also discuss the test plan for optical characterization of the EXCLAIM R = 512 u-Spec devices in this new testbed.
