Coherent Control of Photofragment Distributions Using Laser Phase Modulation in the Weak-Field Limit

Alberto Garcia-Vela, Niels Engholm Henriksen

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

The possibility of quantum interference control of the final state distributions of photodissociation fragments by means of pure phase modulation of the pump laser pulse in the weak-field regime is demonstrated theoretically for the first time. The specific application involves realistic wave packet calculations of the transient vibrational populations of the Br2(B, vf) fragment produced upon predissociation of the Ne-Br-2(B) complex, which is excited to a superposition of resonance states using pulses with different linear chirps. Transient phase effects on the fragment populations are found to persist for long times (about 200 ps) after the pulse is over due to interference between overlapping resonances in Ne-Br-2(B).
Original languageEnglish
JournalThe Journal of Physical Chemistry Letters
Volume6
Issue number5
Pages (from-to)824-829
Number of pages6
ISSN1948-7185
DOIs
Publication statusPublished - 2015

Keywords

  • Chemistry
  • Nanoscience
  • Materials
  • Physics
  • Molecular photodissociation
  • Vibrational predissociation
  • Retinal isomerization
  • Continuum resonances
  • Wave-packet
  • Pulses
  • Dynamics
  • Bacteriorhodopsin
  • Lifetime
  • State

Cite this

@article{3e8d365f67774cdeb1354925dc5be94a,
title = "Coherent Control of Photofragment Distributions Using Laser Phase Modulation in the Weak-Field Limit",
abstract = "The possibility of quantum interference control of the final state distributions of photodissociation fragments by means of pure phase modulation of the pump laser pulse in the weak-field regime is demonstrated theoretically for the first time. The specific application involves realistic wave packet calculations of the transient vibrational populations of the Br2(B, vf) fragment produced upon predissociation of the Ne-Br-2(B) complex, which is excited to a superposition of resonance states using pulses with different linear chirps. Transient phase effects on the fragment populations are found to persist for long times (about 200 ps) after the pulse is over due to interference between overlapping resonances in Ne-Br-2(B).",
keywords = "Chemistry, Nanoscience, Materials, Physics, Molecular photodissociation, Vibrational predissociation, Retinal isomerization, Continuum resonances, Wave-packet, Pulses, Dynamics, Bacteriorhodopsin, Lifetime, State",
author = "Alberto Garcia-Vela and Henriksen, {Niels Engholm}",
year = "2015",
doi = "10.1021/acs.jpclett.5b00129",
language = "English",
volume = "6",
pages = "824--829",
journal = "The Journal of Physical Chemistry Letters",
issn = "1948-7185",
publisher = "American Chemical Society",
number = "5",

}

Coherent Control of Photofragment Distributions Using Laser Phase Modulation in the Weak-Field Limit. / Garcia-Vela, Alberto; Henriksen, Niels Engholm.

In: The Journal of Physical Chemistry Letters, Vol. 6, No. 5, 2015, p. 824-829.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Coherent Control of Photofragment Distributions Using Laser Phase Modulation in the Weak-Field Limit

AU - Garcia-Vela, Alberto

AU - Henriksen, Niels Engholm

PY - 2015

Y1 - 2015

N2 - The possibility of quantum interference control of the final state distributions of photodissociation fragments by means of pure phase modulation of the pump laser pulse in the weak-field regime is demonstrated theoretically for the first time. The specific application involves realistic wave packet calculations of the transient vibrational populations of the Br2(B, vf) fragment produced upon predissociation of the Ne-Br-2(B) complex, which is excited to a superposition of resonance states using pulses with different linear chirps. Transient phase effects on the fragment populations are found to persist for long times (about 200 ps) after the pulse is over due to interference between overlapping resonances in Ne-Br-2(B).

AB - The possibility of quantum interference control of the final state distributions of photodissociation fragments by means of pure phase modulation of the pump laser pulse in the weak-field regime is demonstrated theoretically for the first time. The specific application involves realistic wave packet calculations of the transient vibrational populations of the Br2(B, vf) fragment produced upon predissociation of the Ne-Br-2(B) complex, which is excited to a superposition of resonance states using pulses with different linear chirps. Transient phase effects on the fragment populations are found to persist for long times (about 200 ps) after the pulse is over due to interference between overlapping resonances in Ne-Br-2(B).

KW - Chemistry

KW - Nanoscience

KW - Materials

KW - Physics

KW - Molecular photodissociation

KW - Vibrational predissociation

KW - Retinal isomerization

KW - Continuum resonances

KW - Wave-packet

KW - Pulses

KW - Dynamics

KW - Bacteriorhodopsin

KW - Lifetime

KW - State

U2 - 10.1021/acs.jpclett.5b00129

DO - 10.1021/acs.jpclett.5b00129

M3 - Journal article

VL - 6

SP - 824

EP - 829

JO - The Journal of Physical Chemistry Letters

JF - The Journal of Physical Chemistry Letters

SN - 1948-7185

IS - 5

ER -