中国物理B ›› 2014, Vol. 23 ›› Issue (11): 114203-114203.doi: 10.1088/1674-1056/23/11/114203
• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇 下一篇
葛愉成, 葛湘洁, 何海萍
Ge Yu-Cheng (葛愉成), Ge Xiang-Jie (葛湘洁), He Hai-Ping (何海萍)
摘要:
This study shows that the photoelectron energy spectrum generated by an intense laser pulse in the presence of a continuous X-ray has interesting and useful statistical properties. The total photoionization production is linearly proportional to the time duration of the laser pulse and the square of the beam size. The spectral double energy-integration is an intrinsic value of the laser-assisted X-ray photoionization, which linearly depends on the laser intensity and which quantitatively reflects the strengths of the laser-field modulation and the quantum interference between photoelectrons. The spectral energy width also linearly depends on the laser intensity. These linear relationships suggest new methods for the in-situ measurement of laser intensity and pulse duration with high precision.
中图分类号: (Ultrafast processes; optical pulse generation and pulse compression)