Spatial Control of Multiphoton Electron Excitations in InAs Nanowires by Varying Crystal Phase and Light Polarization

Abstract

We demonstrate the control of multiphoton electron excitations in InAs nanowires (NWs) by altering the crystal structure and the light polarization. Using few-cycle, near-infrared laser pulses from an optical parametric chirped-pulse amplification system, we induce multiphoton electron excitations in InAs nanowires with controlled wurtzite (WZ) and zincblende (ZB) segments. With a photoemission electron microscope, we show that we can selectively induce multiphoton electron emission from WZ or ZB segments of the same wire by varying the light polarization. Developing \textit{ab-initio GW} calculations of 1st to 3rd order multiphoton excitations and using finite-difference time-domain simulations, we explain the experimental findings: While the electric-field enhancement due to the semiconductor/vacuum interface has a similar effect for all NW segments, the 2nd and 3rd order multiphoton transitions in the band structure of WZ InAs are highly anisotropic, in contrast to ZB InAs. As the crystal phase of NWs can be precisely and reliably tailored, our findings opens up for new semiconductor optoelectronics with controllable nanoscale emission of electrons through vacuum or dielectric barriers.

arXiv comment6 figures, 27 pages (including cover picture)

References in corpus (7)

• The GW method
• Structural and optical properties of high quality zinc-blende/wurtzite GaAs hetero-nanowires
• Compact 200 kHz HHG source driven by a few-cycle OPCPA
• Photoemission-based microelectronic devices
• Optical Dielectric Functions of III-V Semiconductors in Wurtzite Phase
• Ab initio calculations of indium arsenide in the wurtzite phase: structural, electronic and optical properties
• Electronic comparison of InAs wurtzite and zincblende phases using nanowire transistors

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