摘要
为了在天空背景下实时测量宽波段脉冲激光波长和方向,提出了使用闪耀光栅衍射测量脉冲激光波长和方向的方法.用傅立叶变换分析天空背景和脉冲激光的光谱分布.通过对透射率函数的傅立叶级数展开,得到光栅衍射谱线的强度,对信号光谱线的最小强度、背景光谱线的最大强度和噪声强度的比较,得到设计的可行性.光路主要由特制光栅、柱面镜以及CCD探测器构成.
In order to measure the wavelength and azimuth of wide band pulsed laser real-timely in the sky background, the diffraction grating is applied. Fourier transform spectrometry is used to analyze the spectral distributions of sky background and the pulsed laser. The intensity of grating diffraction spectrum is obtained by the Fourier series expansion of the transmissivity function. Finally, the design feasibility is analyzed by comparing the minimum signal spectral intensity with the maximal spectral intensity of the background light and the noise intensity. The optical system is mainly made up of special grating, cylindrical lens and CCD detector.
出处
《测试技术学报》
2006年第1期92-94,共3页
Journal of Test and Measurement Technology
基金
国家自然科学基金资助项目(60378019)
山西省科技攻关资助项目(20041501ZX)
关键词
激光波长
脉冲激光
光栅衍射
傅里叶变换
laser wavelength
pulsed-laser
grating diffraction
Fourier transform
