PT-symmetric terahertz sensors using optically pumped graphene metasurfaces

Pai-Yen Chen, Mohamed Farhat

Research output: Chapter in Book/Report/Conference proceedingConference contribution


We investigate the parity-time (PT) symmetric THz system realized with an infrared-pumped active graphene metasurface. We show that the chemically-tuned unidirectional transparency at the exceptional point may make ultra-sensitive gas/molecular/chemical sensors.
Original languageEnglish (US)
Title of host publication2016 Conference on Lasers and Electro-Optics (CLEO)
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
StatePublished - Dec 19 2016


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