Lop-sided Raman-Nath diffraction in PT-antisymmetric atomic lattices

被引：40
|
作者：
Shui, Tao [1 ,2 ]
Yang, Wen-Xing [1 ,2 ]
Li, Ling [2 ]
Wang, Xin [2 ]
机构：
[1] Yangtze Univ, Sch Phys & Optoelect Engn, Jingzhou 434023, Hubei, Peoples R China
[2] Southeast Univ, Sch Phys, Nanjing 211189, Jiangsu, Peoples R China
来源：
OPTICS LETTERS | 2019年 / 44卷 / 08期
基金：
中国国家自然科学基金;
关键词：
SYMMETRY;
D O I：
10.1364/OL.44.002089
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Two-dimensional (2D) optical lattices of driven cold atoms can provide a useful platform to construct 2D electromagnetically induced grating (EIG) with parity-time (PT) anti-symmetry. This atomic grating is achieved by the spatial modulations of the atomic density and frequency detunings in the four-level double-Lambda atomic system. Gain-assisted PT antisymmetry allows us to realize lop-sided Raman-Nath diffraction with high diffraction efficiency at the exception point. It is shown that the nontrivial phenomenon originates from non-Hermitian degeneracy of PT antisymmetry. Our scheme may provide the possibility for active all-optical control and conversion of the spatial beam in optics. (C) 2019 Optical Society of America
引用
收藏
页码：2089 / 2092
页数：4
相关论文
共 50 条
  • [41] The modulation to nonlinear Raman-Nath diffraction via manipulating slopes of domain structures
    Chen, Changdong
    Feng, Chang
    Hu, Xiaopeng
    JOURNAL OF OPTICS, 2019, 21 (03)
  • [42] Evolution of the nonlinear Raman-Nath diffraction from near field to far field
    Liu, Dongmei
    Wei, Dunzhao
    Gu, Min
    Zhang, Yong
    Hu, Xiaopeng
    Xiao, Min
    Han, Peng
    OPTICS LETTERS, 2018, 43 (13) : 3168 - 3171
  • [43] FIBER OPTIC ULTRASONIC SENSOR USING RAMAN-NATH LIGHT-DIFFRACTION
    WU, YQ
    SHANKAR, PM
    LEWIN, PA
    KOLLER, DP
    IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL, 1994, 41 (02) : 166 - 171
  • [44] Design and process test of a novel MOEMS accelerometer based on Raman-Nath diffraction
    Zhang Zuwei
    Wen Zhiyu
    Shang Zhengguo
    Li Dongling
    Hu Jing
    JOURNAL OF SEMICONDUCTORS, 2012, 33 (09)
  • [45] Enhancement of nonlinear Raman-Nath diffraction in two-dimensional optical superlattice
    Wang, Wenjie
    Sheng, Yan
    Roppo, Vito
    Chen, Zhihui
    Niu, Xiaoying
    Krolikowski, Wieslaw
    OPTICS EXPRESS, 2013, 21 (16): : 18671 - 18679
  • [46] Analysis of Kapitza-Dirac diffraction patterns beyond the Raman-Nath regime
    Gadway, Bryce
    Pertot, Daniel
    Reimann, Rene
    Cohen, Martin G.
    Schneble, Dominik
    OPTICS EXPRESS, 2009, 17 (21): : 19173 - 19180
  • [47] Acousto-optic interaction in Raman-Nath acousto-optic diffraction
    Weng Cuncheng
    He Youwu
    EUROPEAN PHYSICAL JOURNAL D, 2019, 73 (01):
  • [48] Design and process test of a novel MOEMS accelerometer based on Raman-Nath diffraction
    张祖伟
    温志渝
    尚正国
    李东玲
    胡晶
    半导体学报, 2012, 33 (09) : 82 - 88
  • [49] Measurement of the Wigner function via atomic beam deflection in the Raman-Nath regime
    Khosa, Ashfaq H.
    Zubairy, M. Suhail
    JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 2006, 39 (24) : 5079 - 5089
  • [50] Experimental research on the multi-order acousto-optic diffraction based on Raman-Nath Diffraction
    Gu, Huadong
    Shao, Zhongxing
    Zheng, Chenqi
    Yang, Jie
    Chen, Ruitao
    Gu, Zetong
    OPTICAL COMPONENTS AND MATERIALS XII, 2015, 9359
12345