Experimental observation of pump-probe spectra of caesium D2 line with a vapour cell

• 来源期刊: 中国物理(英文版)
• 关键词: pump-probe spectroscopy caesium atoms atomic coherence electromagnetically induced transparency (EIT) electromagnetically induced absorption (EIA)
• 年，卷（期）: 2005,（6）
• 页码范围: 1120-1124
• 页数: 5页
• 语种: 英文

摘要

Pump-probe spectra of caesium D2 line are experimentally investigated in a Cs atomic vapour cell with copropagating orthogonal linearly-polarized pump and probe laser beams. Absorption-reduction dips duo to electromagnetically induced transparency (EIT) in multi-A-type Zeeman sublevels of 6 S1/2 F=3-6 P3/2 F'=2 hyperfine transition and absorption-enhanced peaks due to electromagnetically induced absorption (EIA) in 6 S1/2 F=4-6 P3/2 F'=5 hyperfine transition are demonstrated. With detuned pump beam abnormal sign-reversed signals inside the EIT dip and the EIA peak are clearly observed.