Gerlach R, Manson J R, Rubahn H G
Opt Lett. 1996 Aug 1;21(15):1183-5. doi: 10.1364/ol.21.001183.
Delayed photodesorption of Na atoms from large, surface-bound Na clusters is investigated with a novel technique that includes pulsed plasmon excitation and continuous Doppler-free two-photon evanescent wave detection of desorbing atoms. The spatial confinement of the laser beams within the evanescent wave, the Doppler-free nature of the detection mode, and an accurate evaluation of the kinetic energy of the desorbing atoms in terms of a multiphonon time-of-flight distribution allows temporal information on the decay mechanisms within the cluster to be obtained.
利用一种新技术研究了大尺寸表面结合钠团簇中钠原子的延迟光解吸，该技术包括脉冲等离子体激发以及对解吸原子的连续无多普勒双光子倏逝波检测。激光束在倏逝波内的空间限制、检测模式的无多普勒特性以及根据多声子飞行时间分布对解吸原子动能的精确评估，使得能够获得关于团簇内衰变机制的时间信息。
