标题： 张力硅和无张力硅冷电子测辐射热计的光学响应 显示英文标题

标题： Optical Response of Strained- and Unstrained-Silicon Cold-Electron Bolometers

摘要： 我们描述了两种硅冷电子测热计的光学特性，每种测热计都由一个小的（$32 \times 14~\mathrm{\mu m}$）高掺杂硅岛和铝超导接触组成。 辐射通过设计用于耦合160 GHz辐射的双槽天线和硅透镜耦合到硅吸收器上。第一台设备有一个高掺杂硅吸收器，第二台设备有一个高掺杂应变硅吸收器。使用一种新颖的方法，即交叉关联两个并行放大器的输出，我们在观察来自77 K源的辐射时，分别测量到控制设备和应变设备的噪声等效功率为$3.0 \times 10^{-16}$和$6.6 \times 10^{-17}~\mathrm{W\,Hz^{-1/2}}$。对于应变设备，噪声等效功率受限于光子噪声。 显示英文摘要

摘要： We describe the optical characterisation of two silicon cold-electron bolometers each consisting of a small ($32 \times 14~\mathrm{\mu m}$) island of degenerately doped silicon with superconducting aluminium contacts. Radiation is coupled into the silicon absorber with a twin-slot antenna designed to couple to 160-GHz radiation through a silicon lens.The first device has a highly doped silicon absorber, the second has a highly doped strained-silicon absorber.Using a novel method of cross-correlating the outputs from two parallel amplifiers, we measure noise-equivalent powers of $3.0 \times 10^{-16}$ and $6.6 \times 10^{-17}~\mathrm{W\,Hz^{-1/2}}$ for the control and strained device, respectively, when observing radiation from a 77-K source. In the case of the strained device, the noise-equivalent power is limited by the photon noise.