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Multichannel light detectors and their use for CARS spectroscopy

From National Research Council Canada

DOIResolve DOI: https://doi.org/10.1364/AO.23.004083
AuthorSearch for: ; Search for: ; Search for: ORCID identifier: https://orcid.org/0000-0002-6602-1926
FormatText, Article
Abstract
A broadband CARS system designed to measure flame temperature from hot nitrogen CARS spectra is described, and a source of temperature error is identified and attributed to nonlinear behavior of the optical multichannel diode array detector. Detector sensitivity, linearity, uniformity, and noise are discussed. Data are presented for the Tracor-Northern TN-1223-4GI and TN-6132 detectors. It is shown that the nonlinearity observed with CARS signals is a function of radiation density at the detector input plane. This nonlinearity is associated with saturation in the microchannel plate intensifier and should be observable with short duration high intensity light pulses other than CARS, and with intensified detectors (both diode array and vidicon) other than the Tracor-Northern. The nonlinearity observed with the TN-1223-4GI detector can be eliminated by reducing the radiation density. At maximum sensitivity the detector shot noise contributes a significant component to the shot-to-shot variation of the spectral profile of the CARS signal.
Publication date
PublisherOptica Publishing Group
In
  • Applied Optics 23, no. 22 (1984): 4083–4089.
LanguageEnglish
Peer reviewedYes
NRC publication
This is a non-NRC publication

"Non-NRC publications" are publications authored by NRC employees prior to their employment by NRC.

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Record identifierec3a8109-5405-447f-a4d2-84a8a38ef2d7
Record created2025-11-14
Record modified2025-11-14
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