DUAL-BEAM SUBPICOSECOND BROAD-BAND INFRARED SPECTROMETER

被引：59

作者：

DOUGHERTY, TP

HEILWEIL, EJ

机构：

[1] Molecular Physics Division, National Institute of Standards and Technology, Gaithersburg, MD, 20899

来源：

OPTICS LETTERS | 1994年 / 19卷 / 02期

关键词：

D O I：

10.1364/OL.19.000129

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A method for obtaining broadband multichannel IR spectra with subpicosecond time resolution is described. Spectrally broad IR pulses, produced by difference-frequency mixing of two visible pulses in LiIO3, are split to make signal and reference pulses. After sample absorption, the IR pulses are upconverted by a second LiIO3 crystal to produce visible pulses that are dispersed on a CCD detector to yield transient spectra with 100-cm(-1) bandwidth and 4-cm(-1) resolution. With this dual-beam technique, spectra with sensitivities of 0.001 Delta OD are obtained.

引用

页码：129 / 131

页数：3

共 6 条

[1] FEMTOSECOND INFRARED-SPECTROSCOPY - ULTRAFAST PHOTOCHEMISTRY OF IRON CARBONYLS IN SOLUTION [J].