Chinese Optics Letters, 2015, 13 (12): 123201, Published Online: Sep. 12, 2018  

Bragg reflection in a quantum periodic structure Download: 762次

Author Affiliations
1 State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
2 University of Chinese Academy of Sciences, Beijing 100039, China
3 Department of Physics, Shanghai Normal University, Shanghai 200234, China
Abstract
We investigate the reflected field for few-cycle ultra-short laser pulses propagating through resonant media embedded within wavelength-scale structures. Full-wave Maxwell–Bloch equations are solved numerically by using the finite-difference time-domain method. The results show that the spectral feature of the reflected spectrum is determined by the Bragg reflection condition, and that the periodic structure of a dense atomic system can be regarded as a one-dimensional photonic crystal and even as a highly reflective multilayer film. Our study explains the suppression of the frequency shifts in the reflected spectrum based on the Bragg reflection theory and provides a method to control the frequency and frequency intervals of the spectral spikes in the reflected spectrum.

Yueyue Chen, Xunli Feng, Zhizhan Xu, Chengpu Liu. Bragg reflection in a quantum periodic structure[J]. Chinese Optics Letters, 2015, 13(12): 123201.

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