Experimental investigation of the sub-Doppler transmission spectroscopy in a thin vapour layer at room temperature

• 来源期刊: 中国物理（英文版）
• 关键词: thin vapour layer sub-Doppler technique harmonic detection
• 年，卷（期）: 2004,（9）
• 页码范围: 1414-1417
• 页数: 4页
• 语种: 英文

摘要

The sub-Doppler transmission spectrum in a thin vapour layer (about 150μm) was observed at room temperature using the wavelength modulation technology. The absorption signal and its second-order harmonic were detected with an external-cavity diode laser. A sub-Doppler spectrum corresponding to resonant transitions of the caesium D2 line(6S1/2 →6P3/2) was demonstrated. The dependence of the transmission signal on the intensity of the laser was also investigated.