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Title: Generation of a frequency comb and applications thereof

Patent ·
OSTI ID:1109345
;

Apparatus for generating a microwave frequency comb (MFC) in the DC tunneling current of a scanning tunneling microscope (STM) by fast optical rectification, cause by nonlinearity of the DC current vs. voltage curve for the tunneling junction, of regularly-spaced, short pulses of optical radiation from a focused mode-locked, ultrafast laser, directed onto the tunneling junction, is described. Application of the MFC to high resolution dopant profiling in semiconductors is simulated. Application of the MFC to other measurements is described.

Research Organization:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC52-06NA25396
Assignee:
Los Alamos National Security, LLC (Los Alamos, NM)
Patent Number(s):
8,601,607
Application Number:
13/625,780
OSTI ID:
1109345
Country of Publication:
United States
Language:
English

References (4)

Microwave tunneling current from the resonant interaction of an amplitude modulated laser with a scanning tunneling microscope journal March 1996
Optoelectronic devices in which a resonance between optical fields and tunneling electrons is used to modulate the flow of said electrons patent November 2000
Multiple source and detection frequencies in detecting threshold phenomena associated with and/or atomic or molecular spectra patent December 1996
Spectroscopy and mapping of atoms, molecules and surface features via difference frequency generation with a scanning tunneling microscope or related instruments patent August 1997

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