Exciton-polariton based WS_(2)polarization modulator controlled by optical Stark beam  

作　　者：Mahnoor Shahzadi Chuyuan Zheng Sheraz Ahmad Shanshan Wang Weili Zhang 

机构地区：[1]School of Information and Communication Engineering,University of Electronic Science and Technology of China,Chengdu 611731,China [2]College of Petroleum Engineering,China University of Petroleum,Beijing 102249,China

出　　处：《Opto-Electronic Advances》2022年第11期54-60,共7页光电进展（英文）

基　　金：the National Natural Science Foundation of China(Grant Nos.11974071,61575040 and 61811530062);in part by Sichuan Science and Technology Program(Grant No.2018HH0148).

摘　　要：The recent era of fast optical manipulation and optical devices owe a lot to exciton-polaritons being lighter in mass,faster in speed and stronger in nonlinearity due to hybrid light-matter characteristics.The room temperature existence of polaritons in two dimensional materials opens up new avenues to the design and analysis of all optical devices and has gained the researchers attention.Here,spin-selective optical Stark effect is introduced to form a waveguide effect in uniform community of polaritons,and is used to realize polarization modulation of polaritons.The proposed device basically takes advantage of the spin-sensitive properties of optical Stark effect of polaritons inside the WS_(2)microcavity so as to guide different modes and modulate polarization of polaritons.It is shown that polaritonic wavepacket of different mode profiles can be generated by changing intensity of the optical Stark beam and the polarization of polaritons can be controlled and changed periodically along the formed waveguide by introduction birefringence that is sensitive to polarization degree of the optical Stark beam.

关 键 词：Stark beam polaritons MODULATOR TMDS polarization degree 

分 类 号：O436.3[机械工程—光学工程] TN761[理学—光学]