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超快时间分辨光谱学为研究非线性光学、固体物理、化学反应动力学、能量传递和驰豫、生物过程动力学和相干光谱技术提供了一种有效的工具。本文报导了一种飞秒时间分辨光学多道光谱设备，该设备是由一台用氩离子激光器泵浦且产生１００ｆｓ光脉冲并调谐在７２０－９８０ｎｍ的飞秒掺钛兰宝石激光器、改进了的光学多道分析器（ＯＭＡ－Ⅱ）、３８６计算机及光学系统组成的。激光脉冲用ＬＢＯ晶体倍频。谱仪装置的时间分辨率约１２０ｆｓ，光谱分辨率小于１ｎｍ。利用这种光谱仪我们研究了光系统Ⅱ反应中心的能量传递和电子激发转移。最近我们还测量了ＰＳⅡ反应中心核心复合物和ＰＳⅡ颗粒在有或没有激发光情况下的吸收率的变化，利用兰光激发电荷分离时间约３ｐｓ。
Ultrafast time-resolved spectroscopy provides an effective tool for studying nonlinear optics, solid state physics, chemical reaction kinetics, energy transfer and relaxation, bio-process dynamics and coherent spectroscopy. This paper reports a femtosecond time-resolved optical multichannel spectrometer that was fabricated on a femtosecond titanium-sapphire laser tuned to 720-980 nm using an argon ion laser and producing 100 fs pulses of light. The improved Optical multi-channel analyzer (OMA-II), 386 computer and optical system. Laser pulse frequency doubling with LBO crystal. The time resolution of the spectrometer device is about 120 fs and the spectral resolution is less than 1 nm. Using this spectrometer we have studied the energy transfer and electron-induced transfer of photo-system II reaction centers. We have also recently measured changes in the absorbance of PSII core complexes and PSII particles with or without excitation light, using blue light to excite the charge separation time of about 3 ps.