Femtosecond far-infrared pump-probe spectroscopy: A new tool for studying low-frequency vibrational dynamics in molecular condensed phases

被引：76

作者：

Haran, G

Sun, WD

Wynne, K

Hochstrasser, RM

机构：

[1] Department of Chemistry, University of Pennsylvania, Philadelphia

[2] Dept. of Physics and Applied Physics, University of Strathclyde

来源：

CHEMICAL PHYSICS LETTERS | 1997年 / 274卷 / 04期

关键词：

D O I：

10.1016/S0009-2614(97)00705-7

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：

Low-frequency (terahertz) motions that play an important part in reactive processes in condensed phases are directly probed, following an optical excitation. A voltage-biased semiconductor wafer, excited with a 70 femtosecond laser pulse, is employed as a source for intense terahertz pulses, which are used as the probe arm of a pump-probe experiment. Difficulties in using terahertz probe pulses are discussed. We then demonstrate the method with two examples. In the first, a terahertz signal is shown to follow the solvent response to charge transfer in betaine. In the second example, relaxation of sapphire lattice phonons, excited impulsively by a 405 nm pulse, is observed. (C) 1997 Published by Elsevier Science B.V.

引用

收藏

页码：365 / 371

页数：7

相关论文

共 35 条

[11] INTERFEROMETRIC CHARACTERIZATION OF 160 FS FAR-INFRARED LIGHT-PULSES [J].

GREENE, BI ;

FEDERICI, JF ;

DYKAAR, DR ;

JONES, RR ;

BUCKSBAUM, PH .

APPLIED PHYSICS LETTERS, 1991, 59 (08) :893-895

[12] TERAHERTZ COHERENT TRANSIENTS FROM METHYL-CHLORIDE VAPOR [J].

HARDE, H ;

KATZENELLENBOGEN, N ;

GRISCHKOWSKY, D .

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS, 1994, 11 (06) :1018-1030

[13] COLLECTIVE VARIABLE DESCRIPTION OF NATIVE PROTEIN DYNAMICS [J].

HAYWARD, S ;

GO, N .

ANNUAL REVIEW OF PHYSICAL CHEMISTRY, 1995, 46 :223-250

[14] SUBPICOSECOND MEASUREMENTS OF POLAR SOLVATION DYNAMICS - COUMARIN-153 REVISITED [J].

HORNG, ML ;

GARDECKI, JA ;

PAPAZYAN, A ;

MARONCELLI, M .

JOURNAL OF PHYSICAL CHEMISTRY, 1995, 99 (48) :17311-17337

[15] TERAHERTZ RADIATION-INDUCED BY SUBBAND-GAP FEMTOSECOND OPTICAL-EXCITATION OF GAAS [J].

HU, BB ;

ZHANG, XC ;

AUSTON, DH .

PHYSICAL REVIEW LETTERS, 1991, 67 (19) :2709-2712

[16] TEMPERATURE DEPENDENCE OF SHORT WAVELENGTH TRANSMITTANCE LIMIT OF VACUUM ULTRAVIOLET WINDOW MATERIALS .I. EXPERIMENT [J].

HUNTER, WR ;

MALO, SA .

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 1969, 30 (12) :2739-&

[17] EXPERIMENTAL AND THEORETICAL-STUDY OF INHOMOGENEOUS ELECTRON-TRANSFER IN BETAINE - COMPARISONS OF MEASURED AND PREDICTED SPECTRAL DYNAMICS [J].

JOHNSON, AE ;

LEVINGER, NE ;

JARZEBA, W ;

SCHLIEF, RE ;

KLINER, DAV ;

BARBARA, PF .

CHEMICAL PHYSICS, 1993, 176 (2-3) :555-574

[18] EFFICIENT GENERATION OF 380 FS PULSES OF THZ RADIATION BY ULTRAFAST LASER-PULSE EXCITATION OF A BIASED METAL-SEMICONDUCTOR INTERFACE [J].

KATZENELLENBOGEN, N ;

GRISCHKOWSKY, D .

APPLIED PHYSICS LETTERS, 1991, 58 (03) :222-224

[19] Far-infrared dielectric properties of polar liquids probed by femtosecond terahertz pulse spectroscopy [J].

Kindt, JT ;

Schmuttenmaer, CA .

JOURNAL OF PHYSICAL CHEMISTRY, 1996, 100 (24) :10373-10379

[20] ELECTRON CENTERS IN SINGLE-CRYSTAL AL2O3 [J].

LEE, KH ;

CRAWFORD, JH .

PHYSICAL REVIEW B, 1977, 15 (08) :4065-4070

← 1 2 3 4 →