中国物理B ›› 2013, Vol. 22 ›› Issue (7): 75204-075204.doi: 10.1088/1674-1056/22/7/075204

• PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES • 上一篇    下一篇

Spectral modulation and supercontinuum generation assisted by infrared femtosecond plasma grating

刘作业, 孙少华, 史彦超, 丁鹏基, 刘情操, 刘小亮, 丁宝卫, 胡碧涛   

  1. School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China
  • 收稿日期:2012-11-22 修回日期:2013-01-16 出版日期:2013-06-01 发布日期:2013-06-01
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 11135002, 11075069, 91026021, and 11075068) and the Scholarship Award for Excellent Doctoral Student of Ministry of Education, China.

Spectral modulation and supercontinuum generation assisted by infrared femtosecond plasma grating

Liu Zuo-Ye (刘作业), Sun Shao-Hua (孙少华), Shi Yan-Chao (史彦超), Ding Peng-Ji (丁鹏基), Liu Qing-Cao (刘情操), Liu Xiao-Liang (刘小亮), Ding Bao-Wei (丁宝卫), Hu Bi-Tao (胡碧涛)   

  1. School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China
  • Received:2012-11-22 Revised:2013-01-16 Online:2013-06-01 Published:2013-06-01
  • Contact: Hu Bi-Tao E-mail:hubt@lzu.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 11135002, 11075069, 91026021, and 11075068) and the Scholarship Award for Excellent Doctoral Student of Ministry of Education, China.

摘要: Spectral modulation and supercontinuum generation of a probe pulse is investigated by using the plasma grating induced by the interference of two infrared femtosecond laser pulses. The dependences of the supercontinuum generation from the probe pulse on the time delay, the relative polarization angle between the probe pulse and the two-pump pulses, and the input probe pulse energy are investigated. The far-field spatial profiles of the three pulses are measured with different time delays and relative polarization angle, and the core energy of the probe pulse as functions of the time delay and relative polarization angle are also shown.

关键词: plasma grating, supercontinuum generation, redistribution of refractive index

Abstract: Spectral modulation and supercontinuum generation of a probe pulse is investigated by using the plasma grating induced by the interference of two infrared femtosecond laser pulses. The dependences of the supercontinuum generation from the probe pulse on the time delay, the relative polarization angle between the probe pulse and the two-pump pulses, and the input probe pulse energy are investigated. The far-field spatial profiles of the three pulses are measured with different time delays and relative polarization angle, and the core energy of the probe pulse as functions of the time delay and relative polarization angle are also shown.

Key words: plasma grating, supercontinuum generation, redistribution of refractive index

中图分类号:  (Self-focussing, channeling, and filamentation in plasmas)

  • 52.38.Hb
42.65.Re (Ultrafast processes; optical pulse generation and pulse compression) 42.65.Jx (Beam trapping, self-focusing and defocusing; self-phase modulation)