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Title: Communication: The origin of many-particle signals in nonlinear optical spectroscopy of non-interacting particles

Authors:
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1275975
Grant/Contract Number:
FG02-04ER15571
Resource Type:
Journal Article: Publisher's Accepted Manuscript
Journal Name:
Journal of Chemical Physics
Additional Journal Information:
Journal Volume: 145; Journal Issue: 4; Related Information: CHORUS Timestamp: 2016-12-27 20:40:44; Journal ID: ISSN 0021-9606
Publisher:
American Institute of Physics
Country of Publication:
United States
Language:
English

Citation Formats

Mukamel, Shaul. Communication: The origin of many-particle signals in nonlinear optical spectroscopy of non-interacting particles. United States: N. p., 2016. Web. doi:10.1063/1.4960049.
Mukamel, Shaul. Communication: The origin of many-particle signals in nonlinear optical spectroscopy of non-interacting particles. United States. doi:10.1063/1.4960049.
Mukamel, Shaul. 2016. "Communication: The origin of many-particle signals in nonlinear optical spectroscopy of non-interacting particles". United States. doi:10.1063/1.4960049.
@article{osti_1275975,
title = {Communication: The origin of many-particle signals in nonlinear optical spectroscopy of non-interacting particles},
author = {Mukamel, Shaul},
abstractNote = {},
doi = {10.1063/1.4960049},
journal = {Journal of Chemical Physics},
number = 4,
volume = 145,
place = {United States},
year = 2016,
month = 7
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1063/1.4960049

Citation Metrics:
Cited by: 1work
Citation information provided by
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  • The energy of a system of N identical interacting particles may be found by considering the equivalent translationinvariant one-particle problem. This is illustrated in the case of attractive inverse-square force interaction. An upper and a lower limit for the ground-state energy is found immediately by integration over a single variable. The energy is determined within 8% and found to be proportional to the cube of the number of particles. (auth)
  • Atomic Force Microscopy (AFM) allows for a highly sensitive detection of spectroscopic signals. This has been first demonstrated for NMR of a single molecule and recently extended to stimulated Raman in the optical regime. We theoretically investigate the use of optical forces to detect time and frequency domain nonlinear optical signals. We show that, with proper phase matching, the AFM-detected signals closely resemble coherent heterodyne-detected signals. Applications are made to AFM-detected and heterodyne-detected vibrational resonances in Coherent Anti-Stokes Raman Spectroscopy (χ{sup (3)}) and sum or difference frequency generation (χ{sup (2)})
  • Nonlinear optical signals from an assembly of N noninteracting particles consist of an incoherent and a coherent component, whose magnitudes scale {approx}N and {approx}N(N-1), respectively. A unified microscopic description of both types of signals is developed using a quantum electrodynamical (QED) treatment of the optical fields. Closed nonequilibrium Green's function expressions are derived that incorporate both stimulated and spontaneous processes. General (n+1)-wave mixing experiments are discussed as an example of spontaneously generated signals. When performed on a single particle, such signals cannot be expressed in terms of the nth order polarization, as predicted by the semiclassical theory. Stimulated processes aremore » shown to be purely incoherent in nature. Within the QED framework, heterodyne-detected wave mixing signals are simply viewed as incoherent stimulated emission, whereas homodyne signals are generated by coherent spontaneous emission.« less
  • Wavelength-division-multiplexing fibreoptic communication links with optical 2R regenerators based on a saturable absorber are mathematically simulated. The results of optimisation of specific configurations of symmetric lines are presented, and it is shown that the transmission distance in systems with the periodic optical regeneration of signals considerably exceeds that in systems without optical regenerators. (fibreoptic communication. waveguides)