一种变象管分幅/扫描的高时间分辨光谱测量方法

本文详细介绍了西安光机所正在研制中的一种变象管瞬时光谱测量系统,它由WDG30型光栅光谱头与JTG 305型变象管分幅/扫描摄影机组成。文中给出了系统的总体设计考虑、变象管及其控制和主要性能参数。

A MEASURING METHOD OF TIME-RESOLVED OPTICAL SPECTRA WITH A FRAMING/STREAK IMAGE CONVERTER TUBE

The instantaneous spectral measurement of intensity versus time versus wavelength will be presented while the coupling of a nigh spectrum-resolved grating spectral head together with a high time-resolved image converter framing/st streak camera.The measuting system of instantanteu optical spectra with a image converter tube is described by this paper. The .system consists of a wind hand and high-transparent objective lens,the Model WDG-30 spectral head with plane reflection grating and the Model JTG-305 imaga converter framing streak camera.The image converter tube has 656mm optical fibre faceplate output. It is used in conraet photography.While operating in the streak mode,the image converter tube must couple to the intensifier.Main characteristics of the measuring system: 1. Spectral range: 3800-8500Å 2. Linear dispersion on screen: 33Åmm 3. Spectral resolution: 5-10Å 4. Framing mode:Number of frames: 3 framespicture format: 10mm× 8mm(on screen)Exposure time: 50. KM), 200ns.5. Streak mode:Picture format: 6.5mm(speetrum) × 25mm(time) Scanning non-Jinearity:≤8%. Best temperal resolution: better than 200ps.The temporal resolthion of the system can reach 2-10 ps while the coupling of this spec-tral head together with the Model BWS-5k picosecond image converter strreak camera.