论文部分内容阅读
制得钇钡铜氧化物(Y-Ba Cu O)薄膜红外探测器并用各种激光对其进行研究,用 CO_2激光器对10μm 范围内以测辐射热和非测辐射热两种模式工作的探测器进行了研究。用测辐射热模式工作的探测器,其探测率在90K 下为2.1×10~8cmHz~(1/2)/W,响应时间为15ps,相应的带宽为70kHz。用非测辐射热模式工作的探测器,其响应速度非常快,超出仪器的分辨率。用有皮秒速度的氮分子激光器,仪器输出显示持续时间限于2ns。用非测辐射热模式由于极低的噪声,探测率不能测定。超导膜的质量是这些探测器性能的关键。
Y-Ba Cu O thin-film infrared detector was fabricated and studied with various lasers. A CO 2 laser was used to detect both the radiant heat and the non-radiative heat in the range of 10 μm Were studied. Detectors operating in the radiative heat mode have a detection rate of 2.1 × 10 ~ 8cmHz ~ (1/2) / W at 90K, a response time of 15ps and a corresponding bandwidth of 70kHz. Detectors operating in non-bolometric mode respond very fast, exceeding the instrument’s resolution. With a picosecond-speed nitrogen molecular laser, the instrument output shows that the duration is limited to 2ns. With non-bolometric thermal mode the detection rate can not be determined due to very low noise. The quality of superconducting films is the key to the performance of these detectors.