Efficient terahertz emission from InAs nanowires

Details Efficient terahertz emission from InAs nanowires Efficient terahertz emission from InAs nanowires

2011-09-02

arxiv.org/abs/1109.0355v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

12 pages, 7 figures

Scientific paper

10.1103/PhysRevB.84.115421

We observe intense pulses of far-infrared electromagnetic radiation emitted from arrays of InAs nanowires. The THz radiation power efficiency of these structures is about 15 times higher compared to a planar InAs substrate. This is explained by the preferential orientation of coherent plasma motion to the wire surface, which overcomes radiation trapping by total-internal reflection. We present evidence that this radiation originates from a low-energy acoustic surface plasmon mode of the nanowire. This is supported by independent measurements of electronic transport on individual nanowires, ultrafast THz spectroscopy and theoretical analysis. Our combined experiments and analysis further indicate that these plasmon modes are specific to high aspect ratio geometries.

Affiliated with

Also associated with

No associations

Rating

Efficient terahertz emission from InAs nanowires does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Efficient terahertz emission from InAs nanowires, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Efficient terahertz emission from InAs nanowires will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-687412