作　　者： ; ; ; ; ; ;

机构地区： 中国科学院

出　　处： 《物理学报》 2009年第9期6273-6278,共6页

摘　　要： 介绍了利用钛宝石可调谐激光器、倍频器和单波长激光器作为光源,在24个波长分立点定标了三个硅陷阱探测器的绝对光谱响应度,解决了红外激光的精确定位与调整、窗口透过率模拟定标等关键技术.结果显示:在激光波长为412—800 nm时,三个陷阱探测器定标的不确定度约低于0.05%;当激光波长大于800 nm以及低于355 nm时,获得的陷阱探测器的定标不确定度约低于0.065%.硅陷阱探测器可以作为空间各类遥感器在350—1064 nm波段定标的传递标准探测器. In optical remote sensing, the calibration of remote sensor plays a key role in the quantificational remote sensing. A state- of-the-art highest accuracy standard transfer method is developed, which can transfer the standard cryogenic radiometer to secondary standard trap-type detector, and the absolute spectral responsivity calibration system is set up in the band between the visible to near-infrared in our laboratory. It is required that the process of standard transfer should produce little measurement uncertainty. In this paper a Ti： sapphire tunable laser, doubler and single wavelength laser in 24 interval of wavelengths respectively are used, the spectral responsivity of three silicon trap detectors are calibrated absolutely. The key techniques involved are the accurate positioning and adjustment of the infrared laser and the simulation calibration of window transmittance etc., which have bean successfully resolved. The result shows, in the visible （412 nm to 800 nm） reqion, the total relative standard uncertainty of the spectral responsivity at the laser lines is less than 0.05%, while in the UV （350 nm） and NIR regions above 800 nm, the total relative standard uncertainty is less than 0.065 %. So the trap detector can be used as a transfer standard detector for calibration of space sensors in the band of 350 nm to 1064 nm.

关 键 词： 陷阱探测器 低温辐射计 光谱响应度 辐射定标

领　　域： [电子电信] [核科学技术]