作　　者： ; ; ; ;

机构地区： 中国科学院安徽光学精密机械研究所合肥物质科学研究院安徽光学精密机械研究所

出　　处： 《光学学报》 2009年第5期1310-1314,共5页

摘　　要： 为了提高光谱辐亮度响应度的定标精度,研制了新型的利用宽可调谐激光的积分球光源。把外部激光导入积分球,在球出口形成均匀、准朗伯性的面光源。利用钛宝石激光器710 nm输出光研究了光源的辐射特性。双光路导入、采取消相干措施条件下,光源辐亮度的非稳定性在半小时内为0.06%,在出口中心φ60 mm范围内平面非均匀性为0.16%,±22°范围水平面内和垂直面内的角度非均匀性分别为1.3%和0.7%。这种新型的积分球光源具有稳定性好、光谱辐通量高、光谱带宽窄、光源面积大、波长在宽波段内可调谐等优点,联合响应度直接溯源于初级辐射标准低温辐射计的标准探测器,可以有效降低定标不确定度。 To reduce the calibration uncertainty of spectral radiance responsivity, a new tunable laser-based integrating sphere source was developed. In this facility, high-power, tunable laser outputs were introduced into an integrating shpere, producing uniform, quasi-Lambertian, high radiant flux planar source. Ti：sapphire laser 710 nm output light was used to study the radiometric characteristics of the source. While two-beam paths were introduced into the sphere and laser speckle was eliminated, the radiance instability was 0.06% in 30 min; the radiance was spatially uniform within 0.16% over the most central region 60 of the sphere exit port; the angular nonuniformities in horizontal and vertical plane within the range of ±22° were 1.3% and 0.7% respectively. This source have the advantages of high stability, high spectral radiant flux, narrow bandpass, large area, tunable wavelength in broad spectral range, etc. The radiometric properties of the source couple with state-of-the-art standard detector whose responsiveness are directly traceable to primary radiometric scales can reduce the calibration uncertainty effectively.

关 键 词： 激光器 可调谐激光 积分球 光谱辐亮度 定标

领　　域： [电子电信]