ENHANCED SELECTIVITY FOR SPECTROCHEMICAL MEASUREMENT BY MODE SELECTION IN FULLY RESONANT NONLINEAR MIXING

被引:16
作者
CARLSON, RJ [1 ]
WRIGHT, JC [1 ]
机构
[1] UNIV WISCONSIN,DEPT CHEM,1101 UNIV AVE,MADISON,WI 53706
关键词
D O I
10.1021/ac00014a019
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
In this paper, we demonstrate the feasibility of a new family of mode-selective spectroscopies based on multiresonant nonlinear mixing. Three tunable lasers are used for fully resonant four-wave mixing so the output signal depends on the simultaneous contribution from three resonances. Mode selection is accomplished by tuning the lasers to a particular vibrational resonance. Vibrational spectra are obtained by scanning the second resonance. The resulting spectrum shows selective enhancements of all the modes that are related to the mode selected by the first resonance. In this paper, we demonstrate the capabilities of this approach for enhancing features that are very weak in conventional spectroscopies and for separating features that are spectrally overlapped.
引用
收藏
页码:1449 / 1451
页数:3
相关论文
共 5 条
[1]   ANALYSIS OF VIBRONIC MODE-COUPLING IN PENTACENE BY FULLY RESONANT COHERENT 4-WAVE MIXING [J].
CARLSON, RJ ;
NGUYEN, DC ;
WRIGHT, JC .
JOURNAL OF CHEMICAL PHYSICS, 1990, 92 (03) :1538-1546
[2]   ANALYSIS OF VIBRATIONAL CORRELATIONS AND COUPLINGS IN THE LOWEST 2 SINGLET-STATES OF PENTACENE BY HIGH-RESOLUTION, FULLY RESONANT, COHERENT 4-WAVE MIXING SPECTROSCOPY [J].
CARLSON, RJ ;
WRIGHT, JC .
JOURNAL OF CHEMICAL PHYSICS, 1990, 92 (09) :5186-5195
[3]   SIMULTANEOUS NARROW-LINE RAMAN-SPECTRA OF GROUND AND EXCITED ELECTRONIC STATES [J].
DECOLA, PL ;
ANDREWS, JR ;
HOCHSTRASSER, RM ;
TROMMSDORFF, HP .
JOURNAL OF CHEMICAL PHYSICS, 1980, 73 (09) :4695-4696
[4]  
SHEN YR, 1984, NONLINEAR OPTICS, pCH2
[5]  
WRIGHT JC, 1989, RAMAN SPECTROSCOPY 6, P123