Terahertz generation using plasmonic photoconductive gratings
dc.contributor.author | Berry, Christopher W. | en_US |
dc.contributor.author | Jarrahi, Mona | en_US |
dc.date.accessioned | 2013-06-28T15:25:54Z | |
dc.date.available | 2013-06-28T15:25:54Z | |
dc.date.issued | 2012 | en_US |
dc.identifier.citation | Berry, Christopher W.; Jarrahi, Mona (2012). "Terahertz generation using plasmonic photoconductive gratings." New Journal of Physics 14(10): 105029. <http://hdl.handle.net/2027.42/98624> | en_US |
dc.identifier.uri | http://stacks.iop.org/1367-2630/14/i=10/a=105029 | en_US |
dc.identifier.uri | https://hdl.handle.net/2027.42/98624 | |
dc.description.abstract | A photoconductive terahertz emitter based on plasmonic contact electrode gratings is presented and experimentally demonstrated. The nanoscale grating enables ultrafast and high quantum efficiency operation simultaneously, by reducing the photo-generated carrier transport path to the photoconductor contact electrodes. The presented photoconductor eliminates the need for a short-carrier lifetime semiconductor, which limits the efficiency of conventional photoconductive terahertz emitters. Additionally, the photo-absorbing active area of the plasmonic photoconductive terahertz emitter can be increased without a significant increase in the capacitive loading to the terahertz radiating antenna, enabling high quantum-efficiency operation at high pump power levels by preventing the carrier screening effect and thermal breakdown. A plasmonic photoconductive terahertz emitter prototype based on the presented scheme is implemented and integrated with dipole antenna arrays on a semi-insulating In 0.53 Ga 0.47 As substrate. Emitted terahertz radiation is characterized in a terahertz time-domain spectroscopy setup, measuring a terahertz pulse width of 590 fs full-width at half maximum in response to 150 fs pump pulses at 925 nm. | en_US |
dc.publisher | IOP Publishing | en_US |
dc.title | Terahertz generation using plasmonic photoconductive gratings | en_US |
dc.type | Article | en_US |
dc.subject.hlbsecondlevel | Physics | en_US |
dc.subject.hlbtoplevel | Science | en_US |
dc.description.peerreviewed | Peer Reviewed | en_US |
dc.description.bitstreamurl | http://deepblue.lib.umich.edu/bitstream/2027.42/98624/1/1367-2630_14_10_105029.pdf | |
dc.identifier.doi | 10.1088/1367-2630/14/10/105029 | en_US |
dc.identifier.source | New Journal of Physics | en_US |
dc.owningcollname | Physics, Department of |
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