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Optical pump rectification emission: route to terahertz free-standing surface potential diagnostics

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journal contribution
posted on 2023-06-09, 07:45 authored by Luke Peters, Jacob Tunesi, Alessia Pasquazi, Marco Peccianti
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.

Funding

Route to guided TeraHertz backscattering Inspection and Analysis : THEIA; G1308; EUROPEAN UNION; PCIG14-GA-2013-630833

EPSRC Doctoral Training Partnership 2016-17; EPSRC-ENGINEERING & PHYSICAL SCIENCES RESEARCH COUNCIL; EP/N509784/1

CHRONOS - Route to On-Chip Resonating Optical Clocks via Nonlinear Optics; G1159; EUROPEAN UNION; IIF-GA-2012-327627

UK Quantum Technology Hub for Sensors and Metrology; G1511; EPSRC-ENGINEERING & PHYSICAL SCIENCES RESEARCH COUNCIL; EP/M013294/1

History

Publication status

  • Published

File Version

  • Published version

Journal

Scientific Reports

ISSN

2045-2322

Publisher

Nature Publishing Group

Volume

7

Article number

a9805

Department affiliated with

  • Mathematics Publications

Research groups affiliated with

  • Atomic, Molecular and Optical Physics Research Group Publications
  • Sussex Centre for Quantum Technologies Publications

Full text available

  • Yes

Peer reviewed?

  • Yes

Legacy Posted Date

2017-08-31

First Open Access (FOA) Date

2017-08-31

First Compliant Deposit (FCD) Date

2017-08-31

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