PONDEROMOTIVE EFFECTS IN ZERO KINETIC-ENERGY PHOTOELECTRON-SPECTROSCOPY WITH INTENSE FEMTOSECOND PULSES

被引：26

作者：

ZAVRIYEV, A

FISCHER, I

VILLENEUVE, DM

STOLOW, A

机构：

[1] Steacie Institute for Molecular Sciences, National Research Council, Ottawa

来源：

CHEMICAL PHYSICS LETTERS | 1995年 / 234卷 / 4-6期

关键词：

D O I：

10.1016/0009-2614(95)00049-A

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Zero kinetic energy photoelectron (ZEKE) spectroscopy may be an interesting technique for monitoring the time evolution of state selected atomic products in ultrafast pump-probe experiments. We investigate here the effects of laser intensity by studying three-photon non-resonant ZEKE spectra of atomic xenon at the first ionization threshold with tunable femtosecond UV pulses. High intensity introduces a new broadening due to ponderomotive effects in the ZEKE spectrum. It is demonstrated that a three-photon ZEKE spectrum can be recorded at intensities where the broadening due to these ponderomotive effects (i.e. the ac Stark shift for high-n Rydberg states) is small in comparison with the effective laser bandwidth.

引用

页码：281 / 288

页数：8

共 37 条

[1] LIFETIME OF THE S(3) STATE OF CS2 MEASURED BY FEMTOSECOND ULTRAVIOLET MULTIPHOTON IONIZATION SPECTROSCOPY [J].