Optical ionization evolution effect on photocurrent produced from two-color femtosecond laser pulses

被引：2

作者：

Du H. ^{[1
]}

Yang N. ^{[2
]}

机构：

[1] Terahertz Sensing and Imaging Team, Center for Advanced Photonics, RIKEN, Sendai

[2] Key Laboratory for Laser Plasmas (Ministry of Education), Department of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai

来源：

Frontiers of Optoelectronics | 2015年 / 8卷 / 1期

基金：

英国科研创新办公室;

关键词：

multiphoton ionization (MPI); photocurrent; tunneling ionization (TI);

D O I：

10.1007/s12200-014-0450-2

中图分类号：

学科分类号：

摘要：

When laser intensity varies, the ionization induced by optical field can be described by multiphoton ionization (MPI) in low regime and tunneling ionization (TI) in high regime. An empirical formula was used to fit the ionization happened between these two limitation ionization processes. Based on this, ionization rate and photocurrent induced by two-color femtosecond laser pulses interaction with air-plasma were investigated numerically. It was found that they have different relations with the laser intensity. © 2014, Higher Education Press and Springer-Verlag Berlin Heidelberg.

引用

页码：93 / 97

页数：4

共 17 条

[1]

Thomson M., Kress M., Loffler T., Roskos H., Broadband THz emission from gas plasmas induced by femtosecond optical: from fundamentals to applications, Laser & Photonics Reviews, 1, 4, pp. 349-368, (2007)

[2]

Dai J., Clough B., Ho I., Lu X., Liu J., Zhang X.C., Recent progresses in terahertz wave air photonics, IEEE Transactions on Terahertz Science and Technology, 1, 1, pp. 274-281, (2011)

[3]

Du H., Terahertz wave generation and detection based upon ultrafast laser technology, Chinese Journal of Quantum Electronics, 30, 3, pp. 257-267, (2013)

[4]

Kim K.Y., Glownia J.H., Taylor A.J., Rodriguez G., Terahertz emission from ultrafast ionizing air in symmetry-broken laser fields, Optics Express, 15, 8, pp. 4577-4584, (2007)

[5]

Du H., Chen M., Sheng Z., Zhang J., Numerical studies on terahertz radiation generated from two-color laser pulse interaction with gas targets, Laser and Particle Beams, 29, 4, pp. 447-452, (2011)

[6]

Du H., Yang N., Effect of gas species on THz generation from two-color lasers, Chinese Optics Letters, 11, 6, (2013)

[7]

Xu R., Bai Y., Song L., Li N., Peng P., Liu P., Terahertz emission by balanced nonlinear effects in air plasma, Chinese Optics Letters, 11, 4, (2013)

[8]

Cook D.J., Hochstrasser R.M., Intense terahertz pulses by four-wave rectification in air, Optics Letters, 25, 16, pp. 1210-1212, (2000)

[9]

Xie X., Dai J., Zhang X.C., Coherent control of THz wave generation in ambient air, Physical Review Letters, 96, 7, (2006)

[10]

Li M., Li W., Shi Y., Lu P., Pan H., Zeng H., Verification of the physical mechanism of THz generation by dual-color ultrashort laser pulses, Applied Physics Letters, 101, 16, (2012)

← 1 2 →