Greetham G M, Sole D, Clark I P, Parker A W, Pollard M R, Towrie M
Central Laser Facility, Science and Technology Facilities Council, Research Complex at Harwell, Rutherford Appleton Laboratory, Harwell, Oxfordshire, OX11 0QX, United Kingdom.
Rev Sci Instrum. 2012 Oct;83(10):103107. doi: 10.1063/1.4758999.
Time-resolved multiple probe spectroscopy combines optical, electronic, and data acquisition capabilities to enable measurement of picosecond to millisecond time-resolved spectra within a single experiment, using a single activation pulse. This technology enables a wide range of dynamic processes to be studied on a single laser and sample system. The technique includes a 1 kHz pump, 10 kHz probe flash photolysis-like mode of acquisition (pump-probe-probe-probe, etc.), increasing the amount of information from each experiment. We demonstrate the capability of the instrument by measuring the photolysis of tungsten hexacarbonyl (W(CO)(6)) monitored by IR absorption spectroscopy, following picosecond vibrational cooling of product formation through to slower bimolecular diffusion reactions on the microsecond time scale.
时间分辨多探针光谱技术结合了光学、电子和数据采集能力，能够在单次实验中使用单个激活脉冲测量皮秒到毫秒时间分辨光谱。该技术可在单个激光和样品系统上研究广泛的动态过程。该技术包括1 kHz泵浦、10 kHz探针的类似闪光光解的采集模式（泵浦-探针-探针-探针等），增加了每次实验的信息量。我们通过测量六羰基钨（W(CO)₆）的光解来展示该仪器的能力，通过红外吸收光谱监测，从皮秒级的产物形成振动冷却到微秒时间尺度上较慢分子扩散反应。
