Double-resonance optical-pumping effect and laddertype electromagnetically induced transparency signal without Doppler background in cesium atomic vapour cell

• Published in: Chinese physics B Vol. 20; no. 4; pp. 310 - 315
• Main Author: 杨保东 高静 梁强兵 王杰 张天才 王军民
• Format: Journal Article
• Language: English
• Published: 2011
• Subjects: 光学效应; 原子蒸气; 双共振; 多普勒; 电磁感应透明; 细胞信号
• ISSN: 1674-1056; 2058-3834

In a Doppler-broadened ladder-type cesium atomic system （6S1/2 6P3/2-8S1/2）, this paper characterizes electro- magnetically induced transparency （EIT） in two different experimental arrangements, and investigates the influence of the double-resonance optical-pumping （DROP） effect on EIT in both arrangements. When the probe laser is weak, DROP is explicitly suppressed. When the probe laser is moderate, population of the intermediate level （6P3/2 FI = 5） is remarkable, therefore DROP is mixed with EIT. An interesting bimodal spectrum with the broad component due to DROP and the narrow part due to EIT has been clearly observed in cesium 6S1/2 F = 4-6P3/2 F^1= 5-8S1/2 F^11 = 4 transitions.