Effect of gas species on THz generation from two-color lasers

• 来源期刊: 中国光学快报（英文版）
• 年，卷（期）: 2013,（6）
• 页码范围: 84-86
• 页数: 3页
• 语种: 英文
• DOI: 10.3788/COL201311.063202

摘要

The ionization current generated by two-color laser interaction with different gas atoms can produce strong terahertz (THz) emissions.The ionization potential of atoms determines the ionization rate.Thus,THz emission from different atoms varies.Particle-in-cell simulations are conducted to investigate the THz emission from He,Ne,Ar,and N.The THz emissions as a function of the laser field are different because the ionization rate and electron speed depend on the laser field and ionization potential.