Experimental and theoretical study of free induction decay of water molecules induced by terahertz laser pulses

被引：10

作者：

Babilotte, Philippe ^{[1
]}

Coudert, Laurent H. ^{[2
]}

Billard, Franck ^{[1
]}

Hertz, Edouard ^{[1
]}

Faucher, Olivier ^{[1
]}

Lavorel, Bruno ^{[1
]}

机构：

[1] Univ Bourgogne Franche Comte, UMR CNRS 6303, Lab Interdisciplinaire Carnot Bourgogne, BP 47870, F-21078 Dijon, France

[2] Univ Paris Saclay, Univ Paris Sud, CNRS, ISMO, F-91405 Orsay, France

来源：

PHYSICAL REVIEW A | 2017年 / 95卷 / 04期

关键词：

TIME-DOMAIN SPECTROSCOPY; ELECTROOPTIC DETECTION; 2ND-HARMONIC GENERATION; COHERENT TRANSIENTS; THZ RADIATION; VAPOR; AIR; ZNTE; ATMOSPHERE; ABSORPTION;

D O I：

10.1103/PhysRevA.95.043408

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We experimentally investigate the free induction decay in the asymmetric top molecule H2O after interaction with short terahertz pulses. Two different experimental techniques are used to perform measurements in the gas phase under different experimental conditions: electro-optical detection and terahertz field-induced second-harmonic generation. Simulations of the free induction decay signals are performed with a theoretical approach in which the absorption and dispersion coefficients are evaluated from spectroscopic data pertaining to the water molecule. Experimental and theoretical signals are compared directly in the time domain in two limiting cases. For a short propagation length of similar to 40 cm, both signals show a slightly altered electric field consistent with the approximation of weak absorption and dispersion. For a longer propagation length of similar to 300 cm, the electric field is heavily distorted. A good agreement between experimental and calculated signals is obtained in both cases. Finally, we discuss the advantages and/or disadvantages of the two experimental techniques.

引用

页数：6

共 34 条

[1] Observation of the field-free orientation of a symmetric-top molecule by terahertz laser pulses at high temperature [J].

Babilotte, P. ;

Hamraoui, K. ;

Billard, F. ;

Hertz, E. ;

Lavorel, B. ;

Faucher, O. ;

Sugny, D. .

PHYSICAL REVIEW A, 2016, 94 (04)

[2] High average power second harmonic generation in air [J].

Beresna, Martynas ;

Kazansky, Peter G. ;

Svirko, Yuri ;

Barkauskas, Martynas ;

Danielius, Romas .

APPLIED PHYSICS LETTERS, 2009, 95 (12)

[3] OPTICAL 2ND-HARMONIC GENERATION IN ATOMIC VAPORS WITH FOCUSED BEAMS [J].

BETHUNE, DS .

PHYSICAL REVIEW A, 1981, 23 (06) :3139-3151

[4] Coherent terahertz radiation detection: Direct comparison between free-space electro-optic sampling and antenna detection [J].

Cai, Y ;

Brener, I ;

Lopata, J ;

Wynn, J ;

Pfeiffer, L ;

Stark, JB ;

Wu, Q ;

Zhang, XC ;

Federici, JF .

APPLIED PHYSICS LETTERS, 1998, 73 (04) :444-446

[5] FAR-INFRARED TERAHERTZ TIME-DOMAIN SPECTROSCOPY OF FLAMES [J].

CHEVILLE, RA ;

GRISCHKOWSKY, D .

OPTICS LETTERS, 1995, 20 (15) :1646-1648

[6] Terahertz-field-induced second-harmonic generation measurements of liquid dynamics [J].

Cook, DJ ;

Chen, JX ;

Morlino, EA ;

Hochstrasser, RM .

CHEMICAL PHYSICS LETTERS, 1999, 309 (3-4) :221-228

[7] Intense terahertz pulses by four-wave rectification in air [J].

Cook, DJ ;

Hochstrasser, RM .

OPTICS LETTERS, 2000, 25 (16) :1210-1212

[8] Detection of broadband terahertz waves with a laser-induced plasma in gases [J].

Dai, Jianming ;

Xie, Xu ;

Zhang, X. -C. .

PHYSICAL REVIEW LETTERS, 2006, 97 (10)

[9] Rotational Control of Asymmetric Molecules: Dipole- versus Polarizability-Driven Rotational Dynamics [J].

Damari, Ran ;

Kallush, Shimshon ;

Fleischer, Sharly .

PHYSICAL REVIEW LETTERS, 2016, 117 (10)

[10] Commensurate Two-Quantum Coherences Induced by Time-Delayed THz Fields [J].

Fleischer, Sharly ;

Field, Robert W. ;

Nelson, Keith A. .

PHYSICAL REVIEW LETTERS, 2012, 109 (12)

← 1 2 3 4 →