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Cs 455 nm Nonlinear Spectroscopy with Ultra-narrow Linewidth |
| WANG Dong-Ying, WANG Yan-Fei, TAO Zhi-Ming, ZHANG Sheng-Nan HONG Ye-Long, ZHUANG Wei**, CHEN Jing-Biao** |
State Key Laboratory of Advanced Optical Communication System and Network, Institute of Quantum Electronics, School of Electronics Engineering & Computer Science, Peking University, Beijing 100871
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| Cite this article: |
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WANG Dong-Ying, WANG Yan-Fei, TAO Zhi-Ming et al 2013 Chin. Phys. Lett. 30 060601 |
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Abstract Nonlinear spectroscopy has become a useful tool in laser cooling, frequency stabilization and so on. We use the 455.5 nm light beam output of an external cavity diode laser to perform the saturation spectroscopy signal and polarization spectroscopy signal on the 6S1/2 →7P3/2 transition in cesium. The measured linewidth of the F4→4,5 transition is as narrow as 1.40 MHz and that of the F3→2,3 transition is 1.67 MHz. Both of them are very close to the natural linewidth of about 1.2 MHz. Our result is the narrowest measured linewidth of Cs 455 nm saturation spectroscopy signal to our knowledge.
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Received: 19 November 2012
Published: 31 May 2013
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| PACS: |
06.30.Ft
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(Time and frequency)
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32.30.Jc
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(Visible and ultraviolet spectra)
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32.70.Jz
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(Line shapes, widths, and shifts)
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