High-speed N2-CARS thermometry

Lange, Birgit; Noda, Matsuhei; Marowsky, G.

doi:10.1007/bf00332123

Cited by 7 publications

(3 citation statements)

References 21 publications

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“…This value is much lower than results obtained from other rovibrational CARS systems. 9,10,12,24 It compares well with the best values reported for pure-rotational CARS systems. 24,[27][28][29]31,33,35 An interesting option to improve on this precision would be the application of an optical pulse stretcher.…”

supporting

confidence: 80%

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Thermometry for turbulent flames by coherent anti-Stokes Raman spectroscopy with simultaneous referencing to the modeless excitation profile

Veen

Roekaerts

2005

Appl. Opt.

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An optimal system for temperature measurements by coherent anti-Stokes Raman spectroscopy (CARS) in turbulent flames and flows is presented. In addition to a single-mode pump laser and a modeless dye laser, an echelle spectrometer with a cross disperser is used. This system permits simultaneous measurement of the N 2 CARS spectrum and the broadband dye laser profile. A procedure is developed to use software to transform this profile into the excitation profile by which the spectrum is referenced. Simultaneous shot-to-shot referencing is compared to sequential averaged referencing for data obtained in flat flames and in room air. At flame temperatures, the resultant 1.5% imprecision is limited by flame fluctuations, indicating that the system may have a single-shot imprecision below 1%. At room temperature, the 3.8% single-shot imprecision is of the same order as the best values reported for dualbroadband pure-rotational CARS. Using the unique shot-to-shot excitation profiles, simultaneous referencing eliminates systematic errors. At 2000 and 300 K, the 95% confidence intervals are estimated to be Ϯ20 and Ϯ10 K, respectively.

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supporting

confidence: 80%

“…9,10,12,24 Low temperatures indeed occur in turbulent flames when cold pockets of gas alternate with hot pockets in the measurement volume. Consequently, these temperature data will show bad precision.…”

Section: Introductionmentioning

confidence: 98%

Thermometry for turbulent flames by coherent anti-Stokes Raman spectroscopy with simultaneous referencing to the modeless excitation profile

Veen

Roekaerts

2005

Appl. Opt.

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“…Other applications of CARS that have been reported include gas-phase process diagnostics of plasma CVD of amorphous silicon and related materials (467) and of diamond (468) and the simultaneous measurement of temperature and carbon dioxide and molecular hydrogen concentrations in a combustion environment (469). CARS has been used to monitor group V hydride and trimethylgallium decomposition (470) ana for high speed thermometry (471), and resonance CARS has been used to study tetracene impurity in anthracene (472).…”

Section: Nonlinear Raman Spectroscopymentioning

confidence: 99%