Strong THz emission from low-energy acoustic-like surface plasmons in InAs nanowires

InAs nanowires have been previously shown to be efficient emitters of THz radiation, upon excitation with NIR pulses. In this work we report complementary measurements of THz radiation and reflectometry together with DC transport measurements that point to a unifying picture of low-energy acoustic-like longitudinal surface plasmons as being the origin of this THz emission from the nanowires.

[1]  Shadi A Dayeh,et al.  III-V nanowire growth mechanism: V/III ratio and temperature effects. , 2007, Nano letters.

[2]  Alfred Leitenstorfer,et al.  Phase-locked generation and field-resolved detection of widely tunable terahertz pulses with amplitudes exceeding 100 MV/cm. , 2008, Optics letters.

[3]  Edmund H. Linfield,et al.  Simulation of terahertz generation at semiconductor surfaces , 2002 .

[4]  Xu Xie,et al.  Coherent control of THz wave generation in ambient air. , 2006, Physical review letters.

[5]  Konstantin L. Vodopyanov,et al.  Optical THz‐wave generation with periodically‐inverted GaAs , 2008 .

[6]  Lars Samuelson,et al.  Failure of the vapor-liquid-solid mechanism in Au-assisted MOVPE growth of InAs nanowires. , 2005, Nano letters.

[7]  Mansoor Sheik-Bahae,et al.  Direct observation of Landau damping in a solid state plasma , 2008 .

[8]  Daniel M. Mittleman,et al.  Antenna effects in terahertz apertureless near-field optical microscopy , 2004 .

[9]  J. Aizpurua,et al.  Terahertz near-field nanoscopy of mobile carriers in single semiconductor nanodevices. , 2008, Nano letters.

[10]  R. Kersting,et al.  Terahertz microscopy of charge carriers in semiconductors , 2006 .

[11]  Jeffrey G. Cederberg,et al.  Efficient terahertz emission from InAs nanowires , 2011 .

[12]  Chennupati Jagadish,et al.  Transient Terahertz Conductivity of GaAs Nanowires , 2007 .

[13]  Stefan A Maier,et al.  Terahertz surface plasmon-polariton propagation and focusing on periodically corrugated metal wires. , 2006, Physical review letters.

[14]  K. Nelson,et al.  Generation of 10 μJ ultrashort terahertz pulses by optical rectification , 2007 .

[15]  Erich Gornik,et al.  Few-Cycle THz Emission from Cold Plasma Oscillations , 1997 .

[16]  Andreas Stintz,et al.  Emission of Terahertz Radiation from Coupled Plasmon-phonon Modes in InAs , 2002 .