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  4. Nonresonant signal assisted high-pressure multi-species gas concentration measurements using ultrabroadband CARS
 
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2020
Journal Article
Title

Nonresonant signal assisted high-pressure multi-species gas concentration measurements using ultrabroadband CARS

Abstract
Due to their large spectral bandwidth sub ∼20 fs pulses are a versatile tool in spectroscopy, but for applications in gases comparably high pulse energies are required. These pulses are easily subject to distortions of the spectral shape, phase and shot-to-shot stability. We investigate the excitation efficiency for two-beam ultrabroadband fs/ps coherent anti-Stokes Raman scattering (CARS) using a shot-to-shot stable BBO-based optical parametric chirped pulse amplifier (OPCPA). Up to 10 bar, quantitative concentration measurements with and without consideration of the excitation efficiency measured in argon are investigated for ternary gas mixtures with Raman shifts up to ∼3000 cm−1.
Author(s)
Ran, Y.
Boden, A.
Richter, A.
Guhl, S.
Nolte, S.
Ackermann, R.
Journal
OSA continuum  
Open Access
DOI
10.1364/osac.394713
Language
English
Fraunhofer-Institut für Angewandte Optik und Feinmechanik IOF  
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