A high-sensitivity femtosecond to microsecond time-resolved infrared vibrational spectrometer

被引：35

作者：

Towrie, M ^{[1
]}

Gabrielsson, A

Matousek, P

Parker, AW

Rodriguez, AMB

Vlcek, A

机构：

[1] Rutherford Appleton Lab, CCLRC, Cent Laser Facil, Didcot OX11 0QX, Oxon, England

[2] Univ London, Univ London Queen Mary & Westfield Coll, Dept Chem, London E1 4NS, England

来源：

APPLIED SPECTROSCOPY | 2005年 / 59卷 / 04期

关键词：

time-resolved; ultrafast; nanosecond; infrared; Raman; spectrometer; transient; vibrational;

D O I：

10.1366/0003702053641397

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

We describe an apparatus that provides, for the first time, a seamless bridge between femtosecond and microsecond time-resolved Raman and infrared vibrational spectroscopy. The laser system comprises an actively Q-switched sub-nanosecond pulsed kilohertz laser electronically synchronized to an ultrafast titanium sapphire regenerative amplifier to within 0.2 us. The ultrafast amplifier provides the stable probe light source enabling high-sensitivity infrared vibrational spectroscopy of transients. Time-resolved infrared spectra of the excited-state relaxation dynamics of metal carbonyl compounds are presented to illustrate the capability of the apparatus, and transient data is resolved from 1 picosecond to over 100 microseconds. The results are compared to conventional nanosecond Fourier transform infrared (FT-IR) and laser based flash photolysis time-resolved infrared technology.

引用

页码：467 / 473

页数：7

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