Carere C A, Neil W S, Sloan J J
Appl Opt. 1996 Jun 1;35(16):2857-66. doi: 10.1364/AO.35.002857.
We describe the most recent implementation of the data acquisition system which we have developed for fast time-resolved (FTR) Fourier transform spectroscopy (FTS) and report spectra that were obtained by using this instrument. This FTRPTS data system operates in conjunction with any continuous-scan Michelson interferometer, giving it the capability to record many time-delayed spectra of a transient event, with a minimum time resolution of 1 µs. The sensitivity and the spectral resolution of the complete system are the same as those that would be obtained if the interferometer were used in conventional steady-state spectroscopy. To illustrate the performance of the FTRPTS system, we recorded emission spectra from the products of transient chemical reactions of H atoms with CF(3)Cl, CF(2)Cl(2), CFCL(3), and NO(2). These are laser-initiated reactions involving atoms with energies that correspond to a temperature of approximately 27,000 K and lifetimes of a few microseconds, but the FTRPTS system records the time evolution of their products with high signal-to-noise ratio.
我们描述了为快速时间分辨（FTR）傅里叶变换光谱（FTS）而开发的数据采集系统的最新实现方式，并报告了使用该仪器获得的光谱。这个FTRPTS数据系统与任何连续扫描迈克尔逊干涉仪协同工作，使其能够记录瞬态事件的多个时间延迟光谱，最小时间分辨率为1微秒。整个系统的灵敏度和光谱分辨率与将干涉仪用于传统稳态光谱时所获得的相同。为了说明FTRPTS系统的性能，我们记录了氢原子与CF(3)Cl、CF(2)Cl(2)、CFCL(3)和NO(2)的瞬态化学反应产物的发射光谱。这些是激光引发的反应，涉及能量对应于约27000K温度且寿命为几微秒的原子，但FTRPTS系统以高信噪比记录了它们产物的时间演化。
