Abstract

The transmission characteristics of a Raman-amplified atomic filter that can be used to detect fairly weak signals in free-space quantum-key distribution or laser communications are analyzed and discussed in the coherent and incoherent pump fields respectively. The theoretical model for the calculation of the transmission characteristics of a ground-state Raman-amplified Faraday dispersion atomic optical filter based on Raman gain and Faraday rotation is presented. The results show that the filter in a coherent pump field can achieve higher transmission and larger tunability than that in an incoherent pump field due to elimination of pumping detuning. In addition, the filter has a large scale tunability over 3.5 GHz via the Faraday transmission peak adjusted while its bandwidth is only 66 MHz, which is useful for free-space laser communication and lidar systems.

© 2014 Optical Society of America

Atomic filter based on stimulated Raman transition at the rubidium D1 line

Xiuchao Zhao, Xianping Sun, Maohua Zhu, Xiaofei Wang, Chaohui Ye, and Xin Zhou
Opt. Express 23(14) 17988-17994 (2015)

Ultranarrow-bandwidth atomic filter with Raman light amplification

Xin Shan, Xianping Sun, Jun Luo, and Mingsheng Zhan
Opt. Lett. 33(16) 1842-1844 (2008)

Tunable rubidium excited state Voigt atomic optical filter

Longfei Yin, Bin Luo, Junyu Xiong, and Hong Guo
Opt. Express 24(6) 6088-6093 (2016)

Atomic filter with large scale tunability

Shuangqiang Liu, Yundong Zhang, Hao Wu, and Ping Yuan
J. Opt. Soc. Am. B 28(5) 1100-1103 (2011)

Isotope ⁸⁷Rb Faraday filter with a single transmission peak resonant with atomic transition at 780 nm

Zhiming Tao, Mengzhi Chen, Zifa Zhou, Biaoliang Ye, Jianhua Zeng, and Hepeng Zheng
Opt. Express 27(9) 13142-13149 (2019)