Generation of terahertz radiation at optical breakdown of air: The dependence of the optimal phase shift between the components of a two-color laser pulse on their intensity

被引：3

作者：

Ilyakov, I. E. ^{[1
]}

Shishkin, B. V. ^{[1
]}

Alexandrov, L. N. ^{[1
]}

Emelin, M. Yu. ^{[1
,2
]}

Ryabikin, M. Yu. ^{[1
,2
]}

机构：

[1] Russian Acad Sci, Inst Appl Phys, Nizhnii Novgorod 603950, Russia

[2] Nizhnii Novgorod State Univ, Nizhnii Novgorod 603950, Russia

来源：

JETP LETTERS | 2015年 / 101卷 / 02期

基金：

俄罗斯基础研究基金会;

关键词：

EMISSION; PLASMA; FIELD;

D O I：

10.1134/S0021364015020095

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The generation of terahertz radiation at optical breakdown of air by two-color laser pulses composed of the first and second harmonics has been experimentally studied. A strong dependence of the optimal phase shift between the components of the two-color field on the intensity of a laser pulse has been demonstrated. The experimental data in a wide range of the parameters of laser radiation are in agreement with the theoretical results obtained beyond the strong field approximation. This agreement confirms an important role of Coulomb interactions in the formation of directional photocurrents generating terahertz radiation.

引用

页码：74 / 78

页数：5

共 27 条

[1] PLASMA MECHANISMS OF PULSED TERAHERTZ RADIATION GENERATION [J].

Akhmedzhanov, R. A. ;

Ilyakov, I. E. ;

Mironov, V. A. ;

Suvorov, E. V. ;

Fadeev, D. A. ;

Shishkin, B. V. .

RADIOPHYSICS AND QUANTUM ELECTRONICS, 2009, 52 (07) :482-493

[2] Generation of terahertz radiation by the optical breakdown induced by a bichromatic laser pulse [J].

Akhmedzhanov, R. A. ;

Ilyakov, I. E. ;

Mironov, V. A. ;

Suvorov, E. V. ;

Fadeev, D. A. ;

Shishkin, B. V. .

JOURNAL OF EXPERIMENTAL AND THEORETICAL PHYSICS, 2009, 109 (03) :370-378

[3] Generation of Terahertz Radiation by the Axicon Focusing of Ionizing Laser Pulses [J].

Akhmedzhanov, R. A. ;

Ilyakov, I. E. ;

Mironov, V. A. ;

Suvorov, E. V. ;

Fadeev, D. A. ;

Shishkin, B. V. .

JETP LETTERS, 2008, 88 (09) :569-573

[4] Spectrogram representation of pulse self compression by filamentation [J].

Akturk, Selcuk ;

Couairon, Arnaud ;

Franco, Michel ;

Mysyrowicz, Andre .

OPTICS EXPRESS, 2008, 16 (22) :17626-17636

[5] Coulomb effects in directional current excitation in the ionization of gas by a two-color laser field [J].

Alexandrov, L. N. ;

Emelin, M. Yu ;

Ryabikin, M. Yu .

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 2014, 47 (20)

[6] Unidirectional current excitation in tunneling ionization of asymmetric molecules [J].

Alexandrov, L. N. ;

Emelin, M. Yu. ;

Ryabikin, M. Yu. .

PHYSICAL REVIEW A, 2013, 87 (01)

[7]

Ammosov M. V., 1986, Soviet Physics - JETP, V64, P1191

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

Cook, DJ ;

Hochstrasser, RM .

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

[9] Conical forward THz emission from femtosecond-laser-beam filamentation in air [J].

D'Amico, C. ;

Houard, A. ;

Franco, M. ;

Prade, B. ;

Mysyrowicz, A. ;

Couairon, A. ;

Tikhonchuk, V. T. .

PHYSICAL REVIEW LETTERS, 2007, 98 (23)

[10] Phase dependence of the generation of terahertz waves from two-color laser-induced gas plasma [J].

Dai, Houmei ;

Liu, Jinsong .

JOURNAL OF OPTICS, 2011, 13 (05)

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