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Applied Optics

Applied Optics


  • Vol. 51, Iss. 12 — Apr. 20, 2012
  • pp: 2107–2117

Method to correct the distortion caused by amplified stimulated emission as motivated by LIF-based flow diagnostics

Xuesong Li, Yan Zhao, and Lin Ma  »View Author Affiliations

Applied Optics, Vol. 51, Issue 12, pp. 2107-2117 (2012)

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Amplified stimulated emission (ASE) represents a significant issue in two-photon laser-induced fluorescence (TPLIF). The ASE effects are nonlinear and nonlocal, i.e., the ASE effects distort the LIF signal nonlinearly, and the distortion at one location depends on conditions at other locations. In this sense, the ASE effects pose a greater challenge to quantitative TPLIF than quenching and ionization. This work therefore seeks a method to correct such distortion. The method uses two LIF measurements, one with low signal-to-noise ratio (SNR) and negligible ASE distortion and another with high SNR but significant distortion, to generate a faithful measurement with high SNR. Extensive simulations were performed to evaluate the performance of this method for practical applications.

© 2012 Optical Society of America

OCIS Codes
(120.1740) Instrumentation, measurement, and metrology : Combustion diagnostics
(300.2530) Spectroscopy : Fluorescence, laser-induced
(300.6420) Spectroscopy : Spectroscopy, nonlinear

ToC Category:

Original Manuscript: November 9, 2011
Manuscript Accepted: January 19, 2012
Published: April 18, 2012

Xuesong Li, Yan Zhao, and Lin Ma, "Method to correct the distortion caused by amplified stimulated emission as motivated by LIF-based flow diagnostics," Appl. Opt. 51, 2107-2117 (2012)

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