Chinese Optics Letters, 2015, 13 (12): 121903, Published Online: Sep. 12, 2018
Efficient generation of collimated frequency upconversion blue light in rubidium vapor Download: 971次
190.4380 Nonlinear optics, four-wave mixing 190.4180 Multiphoton processes 190.7220 Upconversion 300.6210 Spectroscopy, atomic
Abstract
Pulsed collimated blue light at 420.3 nm is generated in hot Rb vapor by upconverting the 778.10 nm pumping beam through four wave mixing process. The energy conversion efficiency exceeds 1% when a 45 cm-long, 170°C heated Rb cell is used. The influence of cell temperature, wavelength, and energy of a pumping laser are fully examined. The efficiency of the photon conversion is found to be more sensitive to the blue detuning of the pump light and less sensitive to the red detuning of the pump light. This phenomenon can be explained by stimulated hyper-Raman scattering involved in the four-wave mixing process.
Rui Cao, Baodong Gai, Jie Yang, Tong Liu, Jinbo Liu, Shu Hu, Jingwei Guo, Yannan Tan, Shan He, Wanfa Liu, Hongxing Cai, Xihe Zhang. Efficient generation of collimated frequency upconversion blue light in rubidium vapor[J]. Chinese Optics Letters, 2015, 13(12): 121903.