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Noble-gas broadening of an optical transition of I2 measured by coherent transients. III. Two-pulse photon echo and free induction decay

K.E. Drabs, Joop D. W. van Voorst

Chemical PhysicsOct 1, 19858 citations

Application of modified stimulated photon echo technique for measuring relaxation rates of orientation and alignment in an atomic gas

Хворостов Евгений Борисович, Sergei A. Kochubei, Рубцова Наталия Николаевна

The phenomenon of modified stimulated photon echo is registered on two adjacent quantum transitions of 174Yb atoms. The experiments were performed in a rarefied atomic vapour of ytterbium, strongly diluted by the noble gas xenon. Light pulses of linear polarization with specially selected mutual orientations of the polarization vectors were used to excite the atoms, which made it possible to measure the relaxation rates of the orientation and alignment for a three times degenerated intermediate quantum level of 174Yb atoms. The method of modified stimulated photon echo is compared to the method of conventional stimulated photon echo.The phenomenon of modified stimulated photon echo is registered on two adjacent quantum transitions of 174Yb atoms. The experiments were performed in a rarefied atomic vapour of ytterbium, strongly diluted by the noble gas xenon. Light pulses of linear polarization with specially selected mutual orientations of the polarization vectors were used to excite the atoms, which made it possible to measure the relaxation rates of the orientation and alignment for a three times degenerated intermediate quantum level of 174Yb atoms. The method of modified stimulated photon echo is compared to the method of conventional stimulated photon echo.

Journal of Modern OpticsJul 30, 20260 citations

Femtosecond photon echo measurements of electronic coherence relaxation of I2 in the presence of He, Ar, N2, O2, C3H8

Vadim V. Lozovoy, Matthew Comstock, Igor Pastirk +1 more

Elsevier eBooksJan 1, 20040 citations

Suppression of stimulated photon echo during excitation of coherent emission on an adjacent transition

Edward A. Manykin, N. V. Znamenskiı̆, D. V. Marchenko +1 more

Aug 1, 19912 citations

Phase Coherence in Multiple Pulse Optical Spectroscopy

Warren S. Warren, Ahmed H. Zewail

In this paper we describe a new technique for the generation of multiple pulse phase coherent sequences in optical spectroscopy. The technique is an extension of the acousto‐optic modulation and fluorescence detection methods developed for optical transitions by Zewail and Orlowski (Zewail et al., Chem. Phys. Lett.48, 256 (1977); Orlowski et al., Chem. Phys. Lett.54, 197 (1978)). Application of these multiple pulse trains (of different phases) to optical transitions of two‐level and multilevel systems is demonstrated experimentally. It is shown that they can be used to (i) suppress spontaneous emission background, (ii) enhance coherent transients such as photon echoes, (iii) measure additional relaxation parameters in systems with complex rotational‐vibrational levels, and (iv) enhance the effective laser bandwidths through composite pulse trains, as demonstrated on I2 gas. Finally, the potential of this development is extended to the possibility of observing selective multiquantum excitation in molecules.In this paper we describe a new technique for the generation of multiple pulse phase coherent sequences in optical spectroscopy. The technique is an extension of the acousto‐optic modulation and fluorescence detection methods developed for optical transitions by Zewail and Orlowski (Zewail et al., Chem. Phys. Lett.48, 256 (1977); Orlowski et al., Chem. Phys. Lett.54, 197 (1978)). Application of these multiple pulse trains (of different phases) to optical transitions of two‐level and multilevel systems is demonstrated experimentally. It is shown that they can be used to (i) suppress spontaneous emission background, (ii) enhance coherent transients such as photon echoes, (iii) measure additional relaxation parameters in systems with complex rotational‐vibrational levels, and (iv) enhance the effective laser bandwidths through composite pulse trains, as demonstrated on I2 gas. Finally, the potential of this development is extended to the possibility of observing selective multiquantum excitation in molecules.

Laser ChemistryJan 1, 19837 citations

Optical Properties of Coherent Transients which are Stimulated by Picosecond Pulses at Three Frequencies

C. V. Heer

Springer series in chemical physicsJan 1, 19801 citation

Noble-gas broadening of an optical transition of I2 measured by coherent transients. II. Three-pulse stimulated photon echo experiments

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Noble-gas broadening of an optical transition of I2 measured by coherent transients. II. Three-pulse stimulated photon echo experiments

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