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10.1117/12.8224581115th International School on Quantum Electronics; Laser Physics and Applications417212702770270K (8 pp.)Proc.SPIE2008SESE7799727727K1We present the first experimental observation of coherent population trapping (CPT) in potassium, obtained with kHz-frequency modulation of the laser light amplitude. It is performed by acousto-optical amplitude modulation of the radiation from an external cavity diode laser, matching the D1 line of K. The CPT resonances are detected both through K absorption and fluorescence. The resonances are studied in three kinds of K cells: i) pure-evacuated, ii) polydimethylsiloxane (PDMS)-coated-evacuated and iii) Ne-gas buffered. In all cases CPT-resonance narrowing with cell temperature is observed. In the pure-evacuated cell we registered the lowest contrast and the highest width of the resonance, while in buffered/coated cells a strong enhancement of the CPT resonance contrast up to 15% is observed. This behavior is the opposite to the one exhibited by Cs and Rb. The observed contrast enhancement in K is accompanied by more than two orders of magnitude reduction of the resonance width. The results here presented prove the advantage of using Potassium in CPT-based applications.http://spiedigitallibrary.aip.org/browse/vol_level.jsp?type=volrange&scode=7000+-+7099Coherent spectroscopy in potassium vapor with amplitude modulated light会议论文EnglishGozzini, S.; St. Cartaleva, S.; Slavov, D.G.; Marmugi, L.; Lucchesini, A.6679 INSPEC:10448142
外文题目: Coherent spectroscopy in potassium vapor with amplitude modulated light
作者: Gozzini, S.; St. Cartaleva, S.; Slavov, D.G.; Marmugi, L.; Lucchesini, A.
刊名: Proc.SPIE
年: 2008 卷: 7027 页: --70270K (8 pp.)
会议名称: 15th International School on Quantum Electronics; Laser Physics and Applications
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文献类型: 会议论文
正文语种: English
DOI: 10.1117/12.822458
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