Diode laser using narrow bandwidth interference filter at 852 nm and its application in Faraday anomalous dispersion optical filter |
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| Affiliation: | 1.State Key Laboratory of Advanced Optical Communication Systems and Networks, School of Electronics Engineering and Computer Science, and Center for Quantum Information Technology, Peking University, Beijing 100871, China;2.School of Photoelectric Information, University of Electronic Science and Technology, Chengdu 611731, China;3.College of Science, Guizhou University of Engineering Science, Bijie 551700, China;4.National Institute of Metrology, Beijing 100029, China |
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| Abstract: | We demonstrate an 852-nm external cavity diode laser(ECDL) system whose wavelength is mainly determined by an interference filter instead of other wavelength selective elements. The Lorentzian linewidth measured by the heterodyne beating between two identical lasers is 28.3 k Hz. Moreover, we test the application of the ECDL in the Faraday atomic filter.Besides saturated absorption spectrum, the transmission spectrum of the Faraday atomic filter at 852 nm is measured by using the ECDL. This interference filter ECDL method can also be extended to other wavelengths and widen the application range of diode laser. |
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| Keywords: | filters diode lasers Faraday effect |
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