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Sub-Doppler optical-optical double-resonance spectroscopy using a cavity-enhanced frequency comb probe

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Sub-Doppler optical-optical double-resonance spectroscopy using a cavity-enhanced frequency comb probe

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  • Author: V. Silva de Oliveira, I. Silander, L. Rutkowski, G. Sobon, O. Axner, K. K. Lehmann, and A. Foltynowicz
Accurate parameters of molecular hot-band transitions, i.e., those starting from vibrationally excited levels, are needed to accurately model high-temperature spectra in astrophysics and combustion, yet laboratory spectra measured at high temperatures are often unresolved and difficult to assign. Optical-optical double-resonance (OODR) spectroscopy allows the measurement and assignment of individual hot-band transitions from selectively pumped energy levels without the need to heat the sample.

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