Peters, L, Tunesi, J, Pasquazi, A and Peccianti, M (2017) Optical pump rectification emission: route to terahertz free-standing surface potential diagnostics. Scientific Reports, 7. p. 9805. ISSN 2045-2322

PDF (Scientific Reports 7, Article number: 9805 (2017) https://doi.org/10.1038/s41598-017-08734-z) - Published Version Available under License Creative Commons Attribution. Download (4MB)

Abstract

We introduce a method for diagnosing the electric surface potential of a semiconductor based on THz surface generation. In our scheme, that we name Optical Pump Rectification Emission, a THz field is generated directly on the surface via surface optical rectification of an ultrashort pulse after which the DC surface potential is screened with a second optical pump pulse. As the THz generation directly relates to the surface potential arising from the surface states, we can then observe the temporal dynamics of the static surface field induced by the screening effect of the photo-carriers. Such an approach is potentially insensitive to bulk carrier dynamics and does not require special illumination geometries.

Item Type:	Article
Keywords:	Ultrafast Photonics, Terahertz, Surface Physics, Nonlinear Optics
Schools and Departments:	School of Mathematical and Physical Sciences > Mathematics
Research Centres and Groups:	Atomic, Molecular and Optical Physics Research Group Sussex Centre for Quantum Technologies
Subjects:	Q Science > QC Physics > QC0170 Atomic physics. Constitution and properties of matter Including molecular physics, relativity, quantum theory, and solid state physics Q Science > QC Physics > QC0350 Optics. Light Q Science > QC Physics > QC0501 Electricity and magnetism > QC0522 Electricity > QC0680 Quantum electrodynamics T Technology > TA Engineering (General). Civil engineering (General) > TA1501 Applied optics. Photonics
Related URLs:	Publisher
Depositing User:	Marco Peccianti
Date Deposited:	31 Aug 2017 13:57
Last Modified:	01 Feb 2019 15:27
URI:	http://srodev.sussex.ac.uk/id/eprint/69957

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• Optical pump rectification emission: route to free-standing surface potential diagnostics. (deposited 20 Jul 2017 10:47)
  • Optical pump rectification emission: route to terahertz free-standing surface potential diagnostics. (deposited 31 Aug 2017 13:57) [Currently Displayed]

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