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Experimental demonstration of PT‐symmetric stripe lasers (Laser Photonics Rev. 10(4)/2016)
Author(s) -
Gu Zhiyuan,
Zhang Nan,
Lyu Quan,
Li Meng,
Xiao Shumin,
Song Qinghai
Publication year - 2016
Publication title -
laser and photonics reviews
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.778
H-Index - 116
eISSN - 1863-8899
pISSN - 1863-8880
DOI - 10.1002/lpor.201670048
Subject(s) - laser , merge (version control) , photonics , optoelectronics , optics , materials science , physics , computer science , information retrieval
A PT‐symmetric configuration is applied by Gu et al. on a dye‐doped waveguide, i. e., half gain and half loss. With the increase of pumping power, two adjacent modes merge and thus the mode spacing is doubled after the exceptional point. The laser and absorber are obtained simultaneously in this PT‐symmetric system. This research provides a new platform to study the applications of unconventional lasers such as optical switches and direct modulated microlasers. (Picture: Zhiyuan Gu et al., 10.1002/lpor.201500114 pp. 588–594, in this issue)