Abstract
We have observed frequency up-conversion in Cs vapor. The pulsed pumping laser beam of 767.2 nm was converted to simultaneous collinear ultraviolet and blue radiation of wavelengths 387.7 and 455.6 nm, respectively (double-line frequency up-conversion). We examined properties of this up-conversion such as energy efficiency and pulse widths. An infrared laser of ~2.4 μm was successful in modulating the laser beam of the frequency up-conversion. The modulation shifts the wavelength of the blue radiation and the intensities of both the blue and ultraviolet radiation. At nanosecond grade, such modulations are expected to have applications in near-infrared up-conversion and optical communications.
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Acknowledgments
This work is supported by the National Natural Science Foundation of China (Grant Nos. 61405197, 11304311, 11475177, and 61505210).
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Gai, B., Cao, R., Xia, X. et al. Modulation of a double-line frequency up-conversion process in cesium vapor. Appl. Phys. B 122, 165 (2016). https://doi.org/10.1007/s00340-016-6438-4
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DOI: https://doi.org/10.1007/s00340-016-6438-4