Rotational Coherence Spectroscopy and Excited‐State Dynamics of Tolane and its Van Der Waals Complexes with Argon and Nitrogen

Ohline, Shane M.; Romascan, Joann; Felker, Peter

doi:10.1155/1994/60684

Cited by 5 publications

(3 citation statements)

References 5 publications

(4 reference statements)

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“…It is worth noting, that the first signatures of the post-pulse alignment were observed in birefringence of CS 2 vapor back in 1975 [514], furthermore, nonadiabatic excitation of rotational wavepackets had been widely used for rotational coherence spectroscopy [515]. However, the first experiment on nonadiabatic alignment of molecules in beams was performed in 2001 by Rosca-Pruna and Vrakking [516][517][518][519][520], who observed revivals of the alignment of I 2 and Br 2 molecules.…”

Section: Interaction With Short Laser Pulses: Nonadiabatic Alignment ...mentioning

confidence: 99%

“…Averbukh and Arvieu [598] studied semiclassical catastrophes in the dynamics of a molecular rotor driven by a strong time-dependent field, and provided a recipe for the rotational squeezing by a sequence of laser pulses. Short-pulse rotational coherence spectroscopy can also be used to probe molecular structure, yielding information on molecular properties such as rotational constants and polarizabilities of large molecules and clusters, for both the ground and the electronically excited states [515,599,600]. Molecules interacting with short laser pulses can serve as a model to investigate nonlinear quantum phenomena in the dynamics of a kicked rotor, such as Anderson-like localization in angular momentum space [601].…”

Section: Interaction With Short Laser Pulses: Nonadiabatic Alignment ...mentioning

confidence: 99%

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Manipulation of molecules with electromagnetic fields

et al. 2013

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I. INTRODUCTIONThe past few decades have witnessed remarkable developments of laser techniques setting the stage for new areas of research in molecular physics. It is now possible to interrogate molecules in the ultrafast and ultracold regimes of molecular dynamics and the measurements of molecular structure and dynamics can be made with unprecedented precision. Molecules are inherently complex quantum-mechanical systems. The complexity of molecular structure, if harnessed, can be exploited for yet another step forward in science, potentially leading to technology for quantum computing, quantum simulation, precise field sensors, and new lasers.The goal of the present article is to review the major developments that have led to the current understanding of molecule -field interactions and experimental methods for manipulating molecules with electromagnetic fields. Molecule -field interactions are at the core of several, seemingly distinct, areas of molecular physics. This is reflected in the organization of this article, which includes sections on Field control of molecular beams, External field traps for cold molecules, Control of molecular orientation and molecular alignment, Manipulation of molecules by nonconservative forces, Ultracold molecules and ultracold chemistry, Controlled many-body phenomena, Entanglement of molecules and dipole arrays, and Stability of molecular systems in high-frequency super-intense laser fields. By combining these topics in the same review, we would like to emphasize that all this work is based on the same basic Hamiltonian.This review is also intended to serve as an introduction to the excellent collection of articles appearing in this same-titled volume of Molecular Physics [1-27]. These original contributions demonstrate the latest developments exploiting control of molecules with electromagnetic fields. The reader will be treated to a colourful selection of articles on topics as diverse as Chemistry in laser fields, Quantum dynamics in helium droplets, Effects of microwave and laser fields on molecular motion, Rydberg molecules, Molecular structure in external fields, Quantum simulation with ultracold molecules, and Controlled molecular interactions, written by many of the leading protagonists of these fields.This article is concerned chiefly with the effects of electromagnetic fields on low-energy rotational, fine-structure and translational degrees of freedom. There are several important research areas that are left outside the scope of this paper, most notably the large body of work on the interaction of molecules with attosecond laser pulses and high harmonic generation [28], coherent control of molecular dynamics [29] and optimal control of molecular processes [30]. We limit the discussion of resonant interaction of light with molecules to laser cooling strategies. We do not survey spectroscopy or transfer of population between molecular states. Even with these restrictions, this is a vast area to review, as is apparent from the number of references. We did our best to in...

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Section: Interaction With Short Laser Pulses: Nonadiabatic Alignment ...mentioning

confidence: 99%

Section: Interaction With Short Laser Pulses: Nonadiabatic Alignment ...mentioning

confidence: 99%

Manipulation of molecules with electromagnetic fields

et al. 2013

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“…Diphenylacetylene (DPA; m = 1) and diphenylbutadiyne (DPB; m = 2) are attracting much attention as building blocks for dendrimers, electric molecular wires, molecular photonic devices, and two-photon absorption materials. − Ground-state DPA has 1 A g symmetry in a planar D 2 h geometry. A number of spectroscopic studies on the electronically excited states of DPA have been carried out. − The electronic structures within the Franck–Condon region under the D 2 h geometry have been identified. Okuyama et al reported the existence of three close electronic states for excitation in a supersonic jet and assigned the three states to 2 1 A g , 1 1 B 1u , and 1 1 B 2u states .…”

Section: Introductionmentioning

confidence: 99%

Simultaneous Two-Photon Absorption to Gerade Excited Singlet States of Diphenylacetylene and Diphenylbutadiyne Using Optical-Probing Photoacoustic Spectroscopy

et al. 2016

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Simultaneous two-photon absorption to one-photon forbidden electronically excited states of diphenylacetylene (DPA) and diphenylbutadiyne (DPB) was investigated by means of highly sensitive optical-probing photoacoustic spectroscopy. The incident laser power dependencies on photoacoustic signal intensity indicate that the signals are dominated by the two-photon absorption regime. Two-photon absorption is responsible for transitions to gerade excited states based on the selection rule. The two-photon absorption bands observed in the heat action spectra were assigned with the aid of quantum chemical calculations. The relative magnitude of the two-photon absorption cross sections of DPA and DPB was estimated, and the larger two-photon absorption cross section of DPB was related to the resonance effect with the red-shifted one-photon allowed 1(1)B1u ← 1(1)Ag transition of DPB.

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Molecular Structures from Ultrafast Coherence Spectroscopy

Felker¹,

Zewail²

1994

Femtosecond Chemistry

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Rotational Coherence Spectroscopy and Excited‐State Dynamics of Tolane and its Van Der Waals Complexes with Argon and Nitrogen

Cited by 5 publications

References 5 publications

Manipulation of molecules with electromagnetic fields

Manipulation of molecules with electromagnetic fields

Simultaneous Two-Photon Absorption to Gerade Excited Singlet States of Diphenylacetylene and Diphenylbutadiyne Using Optical-Probing Photoacoustic Spectroscopy

Molecular Structures from Ultrafast Coherence Spectroscopy

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