标题： LISA光电接收器的特性表征 显示英文标题

标题： Characterization of photoreceivers for LISA

摘要： LISA 将使用四象限光电接收器作为相位计的前端设备，用于测量无拖拽测试质量在角度方向和分离距离上的运动。 我们已经搭建了一个实验室测试平台，用于光电接收器的特性表征。 一些限制性的噪声源已经被识别出来，其贡献要么被测量，要么从测量数据中推导出来。 我们构建了一个光电接收器，该接收器配备了一个直径为0.5毫米的四象限光电二极管，在低于20 MHz时等效输入电流噪声优于1.8 pA/√Hz，并且具有3 dB带宽为34 MHz。 显示英文摘要

摘要： LISA will use quadrant photoreceivers as front-end devices for the phasemeter measuring the motion of drag-free test masses in both angular orientation and separation. We have set up a laboratory testbed for the characterization of photoreceivers. Some of the limiting noise sources have been identified and their contribution has been either measured or derived from the measured data. We have built a photoreceiver with a 0.5 mm diameter quadrant photodiode with an equivalent input current noise of better than 1.8 pA/sqrt[Hz] below 20 MHz and a 3dB bandwidth of 34 MHz.