Advanced

Influence of laser mode amplitude and laser mode phase fluctuations on spectral noise in CARS

Kröll, Stefan LU ; Alden, Marcus LU ; Bengtsson, Per Erik LU ; Edner, Hans LU ; Nilsson, David LU and Sandell, Dennis (1989) Quantum Electronics and Laser Science Conference In Quantum Electron Laser Sci Conf p.92-92
Abstract

A model for calculating the noise in nonlinear optical processes arising from (nonquantum) stochastic fluctuations (mode beating) in and between the lasers participating in the nonlinear interaction has been previously developed. Assuming that all individual laser mode phases and laser modes are (statistically) independent (Gaussian statistics) and that the nonlinear interaction can be expressed as a perturbation expansion in the participating fields, deterministic expressions for the expected intensity and higher order moments for the signal were obtained in a straightforward way. The authors have explicitly evaluated the deterministic expressions, obtaining closed-form expressions for the SNR in coherent anti-Stokes Raman scattering... (More)

A model for calculating the noise in nonlinear optical processes arising from (nonquantum) stochastic fluctuations (mode beating) in and between the lasers participating in the nonlinear interaction has been previously developed. Assuming that all individual laser mode phases and laser modes are (statistically) independent (Gaussian statistics) and that the nonlinear interaction can be expressed as a perturbation expansion in the participating fields, deterministic expressions for the expected intensity and higher order moments for the signal were obtained in a straightforward way. The authors have explicitly evaluated the deterministic expressions, obtaining closed-form expressions for the SNR in coherent anti-Stokes Raman scattering (CARS) as a function of laser mode spacing, laser and Raman bandwidths and the duration of the anti-Stokes pulse. Those results qualitatively agreed with their experimental results. The theoretical analysis further indicates that the (nonquantum) noise in nonlinear optical processes from multimode lasers can be separated into terms (explicitly evaluated) arising from shot-to-shot fluctuations in the laser mode amplitudes and terms arising from shot-to-shot fluctuations in the individual laser mode phases.

(Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
in
Quantum Electron Laser Sci Conf
editor
Anon,
pages
1 pages
publisher
Publ by IEEE
conference name
Quantum Electronics and Laser Science Conference
external identifiers
  • Scopus:0024881620
language
English
LU publication?
yes
id
89bea884-b125-4fec-b8fe-e7e2bd1a0c76
date added to LUP
2016-06-29 17:18:30
date last changed
2016-07-01 13:32:53
@misc{89bea884-b125-4fec-b8fe-e7e2bd1a0c76,
  abstract     = {<p>A model for calculating the noise in nonlinear optical processes arising from (nonquantum) stochastic fluctuations (mode beating) in and between the lasers participating in the nonlinear interaction has been previously developed. Assuming that all individual laser mode phases and laser modes are (statistically) independent (Gaussian statistics) and that the nonlinear interaction can be expressed as a perturbation expansion in the participating fields, deterministic expressions for the expected intensity and higher order moments for the signal were obtained in a straightforward way. The authors have explicitly evaluated the deterministic expressions, obtaining closed-form expressions for the SNR in coherent anti-Stokes Raman scattering (CARS) as a function of laser mode spacing, laser and Raman bandwidths and the duration of the anti-Stokes pulse. Those results qualitatively agreed with their experimental results. The theoretical analysis further indicates that the (nonquantum) noise in nonlinear optical processes from multimode lasers can be separated into terms (explicitly evaluated) arising from shot-to-shot fluctuations in the laser mode amplitudes and terms arising from shot-to-shot fluctuations in the individual laser mode phases.</p>},
  author       = {Kröll, Stefan and Alden, Marcus and Bengtsson, Per Erik and Edner, Hans and Nilsson, David and Sandell, Dennis},
  editor       = {Anon, },
  language     = {eng},
  pages        = {92--92},
  publisher    = {ARRAY(0x911ad78)},
  series       = {Quantum Electron Laser Sci Conf},
  title        = {Influence of laser mode amplitude and laser mode phase fluctuations on spectral noise in CARS},
  year         = {1989},
}