Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Quantum Electronics and Laser Science Conference

Identification in the frequency domain of molecular dissociation fragments detected by a wavepacket

Y. Xiao, Brian J. Ricconi, Ju Gao, James Gary Eden

Published May 1, 2007• 0 citations
Publisher

Abstract

Coherent control of Rb2 predissociation by chirped femtosecond laser pulses is detected by a wavepacket probe. Specific atomic fragments of molecular dissociation are identified by viewing the wavepacket dynamics in the spectral domain.
DOI
10.1109/qels.2007.4431105

Related papers

Identification in the Frequency Domain of Molecular Dissociation Fragments Detected by a Wavepacket

Y. Xiao, Brian J. Ricconi, Ju Gao +1 more

Coherent control of Rb2predissociation by chirped femtosecond laser pulses is detected by a wavepacket probe. Specific atomic fragments of molecular dissociation are identified by viewing the wavepacket dynamics in the spectral domain.

Conference on Lasers and Electro-Optics•May 1, 2007•0 citations

Coherent control of predissociation of the Rb dimer by chirped femtosecond laser pulses

Y. Xiao, Ju Gao, James Gary Eden

Coherent control of predissociation of the Rb dimer in 8times10-3Torr of Rb vapor is achieved with chirped femtosecond laser pulses. The preferred dissociation channels for different values of pulse chirp are found experimentally.

Conference on Lasers and Electro-Optics•Jan 1, 2006•2 citations

Production and Probing of Atomic Wavepackets With Ultrafast Laser Pulses: Applications to Atomic and Molecular Dynamics

Zhongling Lu, Changjun Zhu, Andrey A. Senin +3 more

We demonstrate that atomic wavepackets can serve as sensitive detectors for investigating atomic and molecular dynamics. In concert with parametric four-wave mixing, the interference between coherent superpositions of atomic excited states produced by ultrafast (/spl sim/150 fs) pump and probe pulses provides a new and powerful tool with which fundamental processes, such as molecular dissociation and Rydberg-Rydberg atomic collisions, can be observed with the extraordinary sensitivity afforded by a coherent nonlinear optical process. Experiments are described in which the dissociation of an electronically excited molecule (Rb/sub 2/) and the distribution of atomic fragments into excited states spanning >10 000 cm/sup -1/ are observed. Also, resonant collisions between Rb atoms in the 7s and 5d states are detected by monitoring the shift in the frequency of an atomic wavepacket induced by the dipole-dipole interaction.

IEEE Journal of Selected Topics in Quantum Electronics•Jan 1, 2004•19 citations

Pulse Width Effect on Rb2 Predissociation by Negatively Chirped Femtosecond Laser Pulses

Y. Xiao, Ju Gao, James Gary Eden

The effect of laser pulse width on Rb2 predissociation is probed. The relative yields of Rb excited state fragments with different pulse widths are compared experimentally. Reproducible dissociation channels are observed.

Frontiers in Optics•Jan 1, 2006•0 citations

Ultrafast spectroscopic tool for studying molecular dissociation

Andrey A. Senin, Zhongling Lu, J.R. Allen +1 more

In summary, the results of the time-frequency analysis of the output radiation suggest that the dissociation of electronically-excited molecules can be detected with an atomic wavepacket and four-wave mixing. The arrival of the dissociation transient is evidenced by changes in the temporal history of frequency components of the wavepacket. Thus, the technique presented in this work appears to be a novel, powerful spectroscopic tool for studying the dissociation of molecules. The potential of this technique for other molecules and optoelectronic materials (such as rare earth-doped crystals) will be discussed.

IEEE Lasers and Electro-Optics Society Annual Meeting (LEOS)•Jun 26, 2003•1 citation

Coherent control over strong-field dissociation of heteronuclear diatomic molecules

Brandon Rigsbee

In the last 20 years, advancements in laser technology have allowed for the production of intense laser pulses with durations in the femtosecond (10⁻¹⁵ second) regime, giving scientists the ability to probe nuclear dynamics on their natural time scale. Study of the dissociated fragments created by these intense fields can be used to learn about the molecular structure and dynamics. The work presented in this thesis focuses on controlling this light–molecule interaction in such a way that we can preferentially dissociate the molecule to a desired final product. The hydrogen molecular ion, HD⁺, as well as LiF serve as simple systems that can be studied theoretically for a broad range of laser parameters. Our goal in using these relatively simple systems is to capture the essential physics of the light–molecule interaction and develop general methods to describe these interactions in more complex systems.

•Apr 24, 2015•0 citations
We demonstrate that atomic wavepackets can serve as sensitive detectors for investigating atomic and molecular dynamics. In concert with parametric four-wave mixing, the interference between coherent superpositions of atomic excited states produced by ultrafast (/spl sim/150 fs) pump and probe pulses provides a new and powerful tool with which fundamental processes, such as molecular dissociation and Rydberg-Rydberg atomic collisions, can be observed with the extraordinary sensitivity afforded by a coherent nonlinear optical process. Experiments are described in which the dissociation of an electronically excited molecule (Rb/sub 2/) and the distribution of atomic fragments into excited states spanning >10 000 cm/sup -1/ are observed. Also, resonant collisions between Rb atoms in the 7s and 5d states are detected by monitoring the shift in the frequency of an atomic wavepacket induced by the dipole-dipole interaction.
In summary, the results of the time-frequency analysis of the output radiation suggest that the dissociation of electronically-excited molecules can be detected with an atomic wavepacket and four-wave mixing. The arrival of the dissociation transient is evidenced by changes in the temporal history of frequency components of the wavepacket. Thus, the technique presented in this work appears to be a novel, powerful spectroscopic tool for studying the dissociation of molecules. The potential of this technique for other molecules and optoelectronic materials (such as rare earth-doped crystals) will be discussed.
In the last 20 years, advancements in laser technology have allowed for the production of intense laser pulses with durations in the femtosecond (10⁻¹⁵ second) regime, giving scientists the ability to probe nuclear dynamics on their natural time scale. Study of the dissociated fragments created by these intense fields can be used to learn about the molecular structure and dynamics. The work presented in this thesis focuses on controlling this light–molecule interaction in such a way that we can preferentially dissociate the molecule to a desired final product. The hydrogen molecular ion, HD⁺, as well as LiF serve as simple systems that can be studied theoretically for a broad range of laser parameters. Our goal in using these relatively simple systems is to capture the essential physics of the light–molecule interaction and develop general methods to describe these interactions in more complex systems.