Tinsley B A
Appl Opt. 1969 Sep 1;8(9):1831-5. doi: 10.1364/AO.8.001831.
A new design of the grille spectrometer allows its use for measurements of thermal ir emissions. The grilles are made of self-supporting etched metal foil, and the curved chessboard pattern allows optical chopping of one spectral element at a time by oscillation of the exit grille. Although the effective noise level obtained is as low as 1 erg sec(-1) cm(-2) sr(-1) cm(-1) for an integration time of 448 ms, the specific detectivity of the thermister bolometer appropriate for the large throughput of this instrument is much less than in small throughput versions, and a different detector or detector system will be required to achieve optimum performance.
一种新型的光栅光谱仪设计使其可用于热红外发射测量。光栅由自支撑蚀刻金属箔制成，弯曲的棋盘图案允许通过出射光栅的振荡一次对一个光谱元素进行光学斩波。尽管在448毫秒的积分时间内获得的有效噪声水平低至1尔格·秒⁻¹·厘米⁻²·球面度⁻¹·厘米⁻¹，但适用于该仪器大吞吐量的热敏电阻测辐射热计的比探测率远低于小吞吐量版本，需要不同的探测器或探测器系统才能实现最佳性能。
