Plasmonic enhanced ultrafast switch.

Subramania,Ganapathi Subramanian ; Reno, John Louis ; Passmore, Brandon Scott ; Harris, Tom. ; Shaner, Eric Arthur ; Barrick, Todd A.

关键词: ELECTRICAL TRANSIENTS;    ELECTRODES;    PHOTOCONDUCTORS;    RADIATIONS;    RECOMBINATION;    SWITCHES;    GALLIUM ARSENIDES;    DESIGN Electric switchgear.;    Semiconductor switches-Design and construction.;    Switches.;   

DOI  :  10.2172/973847
RP-ID  :  SAND2009-6250
PID  :  OSTI ID: 973847
Others  :  TRN: US201007%%191

学科分类：工程和技术（综合）

美国|英语

来源: SciTech Connect

【 摘 要 】

Ultrafast electronic switches fabricated from defective material have been used for several decades in order to produce picosecond electrical transients and TeraHertz radiation. Due to the ultrashort recombination time in the photoconductor materials used, these switches are inefficient and are ultimately limited by the amount of optical power that can be applied to the switch before self-destruction. The goal of this work is to create ultrafast (sub-picosecond response) photoconductive switches on GaAs that are enhanced through plasmonic coupling structures. Here, the plasmonic coupler primarily plays the role of being a radiation condenser which will cause carriers to be generated adjacent to metallic electrodes where they can more efficiently be collected.