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Votava, O.; Fair, J. R.; Plusquellic, D. F.; Riedle, Eberhard ORCID logoORCID: https://orcid.org/0000-0002-2672-5718 und Nesbitt, D. J. (Dezember 1997): High resolution vibrational overtone studies of HOD and H2O with single mode, injection seeded ring optical parametric oscillators. In: Journal of Chemical Physics, Bd. 107, Nr. 21: S. 8854-8865

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Abstract

Design, performance, and applications of a pulsed, single mode optical parametric oscillator (OPO) for studies of high resolution spectroscopy and photodissociation dynamics are presented, Single mode operation is achieved by resonantly seeding a four-minor OPO ring cavity With a tunable, continuous wave (cw) ring dye laser, providing continuous scanning capability at near Fourier transform limited resolution Delta nu=160(20) MHz] with peak output energies greater than or equal to 10 mJ. The high spectral brightness of this OPO light source is sufficient to saturate Delta nu =3 stretching transitions in OH, NH, and CH vibrational manifolds, which makes feasible quantum state-selected multiple resonance spectroscopies at 0.005 cm(-1) resolution, The capability of this single mode OPO is explicitly demonstrated via ii) nu(OH)=3<--0 overtone spectroscopy of HOD, (ii) near-IX optical saturation studies of H2O in the /03(-)) overtone vibrational manifold, (iii) high resolution LIF Dopplerimetry of OH radicals, and (iv) IR/UV multiple resonance spectroscopy of Ar-H2O molecular clusters. (C) 1997 American Institute of Physics.

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