Effect of two-color laser pulse intensity ratio on intense terahertz generation

被引：8

作者：

Lu, Chenhui ^{[1
,2
]}

Zhang, Shian ^{[1
]}

Yao, Yunhua ^{[1
]}

Xu, Shuwu ^{[1
,3
]}

Jia, Tianqing ^{[1
]}

Ding, Jingxin ^{[1
]}

Sun, Zhenrong ^{[1
]}

机构：

[1] E China Normal Univ, Dept Phys, State Key Lab Precis Spect, Shanghai 200062, Peoples R China

[2] Shanghai Univ Engn Sci, Coll Mech Engn, Shanghai 201620, Peoples R China

[3] Nantong Univ, Sch Sci, Nantong 226007, Peoples R China

来源：

RSC ADVANCES | 2015年 / 5卷 / 02期

关键词：

FEMTOSECOND OPTICAL PULSES; WAVE GENERATION; IONIZATION; PLASMA; AIR; RADIATION; EMISSION; DYNAMICS; GASES;

D O I：

10.1039/c4ra12556h

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We theoretically demonstrate the effect of the intensity ratio of the two-color laser field on the terahertz generation based on a transient photocurrent model. We show that the terahertz generation depends on the intensity ratio of the two-color laser field at a given total laser intensity, and the optimal intensity ratio for the maximum terahertz generation will decrease with the increase of the total laser intensity. We also show that the final ionization degree can be used to explain the optimal intensity ratio change at different laser intensities. Furthermore, we utilize the increasing rate of electron density and the electron drift velocity to illustrate the physical mechanism of the maximum terahertz radiation generation.

引用

页码：1485 / 1490

页数：6

共 50 条

[41] Influence of microscopic and macroscopic effects on attosecond pulse generation using two-color laser fields
Chen, C.
Hernandez-Garcia, C.
Tao, Z.
You, W.
Zhang, Y.
Zusin, D.
Gentry, C.
Tengdin, P.
Becker, A.
Jaron-Becker, A.
Kapteyn, H.
Murnane, M.
OPTICS EXPRESS, 2017, 25 (23): : 28684 - 28696
[42] Strong, tunable terahertz emission by two-color picosecond laser irradiation
Wang, W. -M.
Gibbon, P.
Sheng, Z. -M.
Li, Y. -T.
PHYSICAL REVIEW A, 2014, 90 (02):
[43] Impact of laser chirp on the polarization of terahertz from two-color plasma
Mou, Sen
Tomarchio, Luca
D'Arco, Annalisa
DI Fabrizio, Marta
Macis, Salvatore
Curcio, Alessandro
Palumbo, Luigi
Lupi, Stefano
Petrarca, Massimo
PHOTONICS RESEARCH, 2023, 11 (06) : 978 - 985
[44] Kinetic study of terahertz generation based on the interaction of two-color ultra-short laser pulses with molecular hydrogen gas
Gishini, M. S. Soltani
Ganjovi, A.
Saeed, M.
PHYSICS OF PLASMAS, 2016, 23 (06)
[45] Trajectory analysis for low-order harmonic generation in two-color strong laser fields
Fan, Xingwang
Gao, Yuan
Yan, Tian-Min
Jiang, Yuhai
Zhang, Yizhu
OPTICS EXPRESS, 2023, 31 (01) : 86 - 94
[46] Terahertz emission from a femtosecond laser focus in a two-color scheme
Balakin, Alexey V.
Borodin, Alexander V.
Kotelnikov, Igor A.
Shkurinov, Alexander P.
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS, 2010, 27 (01) : 16 - 26
[47] The manipulation of polarized terahertz generation by incommensurate two-color laser pulses with circular polarization
Zhuang, Longzhen
Ni, Ming
Chen, Xi
Wang, Zhaoqiang
Lu, Chenhui
MODERN PHYSICS LETTERS B, 2024, 38 (20):
[48] Research Progress on Intense and Broadband Terahertz Radiation Generation with Multi-Color Laser Field
Lu, Chenhui
Zhuang, Longzhen
Zhang, Zhiwen
Liu, Zefu
Liu, Liu
CHINESE JOURNAL OF LASERS-ZHONGGUO JIGUANG, 2023, 50 (17):
[49] Two-dimensional plasma current and optimized terahertz generation in two-color photoionization
Oh, T. I.
You, Y. S.
Kim, K. Y.
OPTICS EXPRESS, 2012, 20 (18): : 19778 - 19786
[50] Generation of Terahertz Radiation in Gas Media with Variable Structure when Focusing Two-Color Femtosecond Laser Pulses
Chizhov, P. A.
Ushakov, A. A.
Bukin, V. V.
Garnov, S. V.
BULLETIN OF THE LEBEDEV PHYSICS INSTITUTE, 2019, 46 (11) : 333 - 335

← 1 2 3 4 5 →