Nanosecond Time-Resolved Infrared Spectroscopy with a Dispersive Scanning Spectrometer
Nanosecond Time-Resolved Infrared Spectroscopy with a Dispersive Scanning Spectrometer
复制标题
使用色散扫描光谱仪进行纳秒时间分辨红外光谱分析
DOI：
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发表时间：
1994
期刊：
影响因子：
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通讯作者：
H. Hamaguchi
中科院分区：
文献类型：
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作者：
T. Yuzawa;C. Kato;M. George;H. Hamaguchi
建立了基于色散扫描光谱仪的纳秒时间分辨红外光谱系统。这是以前论文中报道的类似系统的高级版本;时间分辨率从1 μs提高到50 ns，强度变化的灵敏度从10−4提高到10−6。这些都是通过使用高温陶瓷红外光源，光伏MCT检测器，和低噪声，宽带的反射器专门为目前的目的开发的。时间分辨红外光谱的一些样品的光化学和光生物学的利益，显示系统的能力。热伪影的起源，这已被发现严重妨碍时间分辨红外测量，被证明是由于一个小的温度跳变引起的瞬态反射率的变化。结合红外激光光谱和傅里叶变换红外光谱等方法，对时间分辨红外光谱的发展前景进行了展望。
A nanosecond time-resolved infrared spectroscopic system based on a dispersive scanning spectrometer has been constructed. This is an advanced version of a similar system reported in a previous paper; the time resolution has been improved from 1 μs to 50 ns and the sensitivity from 10−4 in intensity changes to 10−6. These have been achieved by the use of a high-temperature ceramic infrared light source, a photovoltaic MCT detector, and a low-noise, wide-band preamplifier developed specifically for the present purpose. Time-resolved infrared spectra of a few samples of photochemical and photobiological interests are presented to show the capability of the system. The origin of the thermal artifacts, which have been found to hamper the time-resolved infrared measurements seriously, is shown to be due to the transient reflectance change induced by a small temperature jump. The future prospect of time-resolved infrared spectroscopy is discussed with reference to other methods including infrared laser spectroscopy and Fourier transform infrared spectroscopy.