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Title: Stimulated rotational Raman generation controlled by strongly driven vibrational coherence in molecular deuterium

Abstract

We report an experimental observation of simultaneous rotational and vibrational collinear Raman generation in low pressure cooled deuterium gas, with only two narrow-band laser pulses applied at the input of the molecular cell. Only the fundamental vibrational transition Q{sub 1} (0) is driven strongly in this experiment. However, in addition to efficient vibrational Raman generation we observe generation of a large number of rotational sidebands (more than 100) corresponding to S{sub 0} (0) transition. We notice that fine-tuning of the frequency difference of the driving fields near the vibrational Raman resonance changes dramatically the aspects of the generated spectrum and the efficiency of rotational generation: from complete suppression of a self-starting stimulated rotational Raman generation to a strong enhancement of two orders of magnitude. We conduct a numerical analysis that allows us to attribute this behavior to quantum interference among the probability amplitudes of the three molecular states involved.

Authors:
; ;  [1]
  1. Department of Physics and Institute for Quantum Studies, Texas A and M University, College Station, Texas 77843-4242 (United States)
Publication Date:
OSTI Identifier:
20982114
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. A; Journal Volume: 75; Journal Issue: 2; Other Information: DOI: 10.1103/PhysRevA.75.022515; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; AMPLITUDES; DEUTERIUM; EFFICIENCY; INTERFERENCE; LASER RADIATION; NUMERICAL ANALYSIS; PROBABILITY; PULSES; RAMAN SPECTRA; RESONANCE; ROTATIONAL STATES; TUNING; VIBRATIONAL STATES

Citation Formats

Burzo, A. M., Chugreev, A. V., and Sokolov, A. V. Stimulated rotational Raman generation controlled by strongly driven vibrational coherence in molecular deuterium. United States: N. p., 2007. Web. doi:10.1103/PHYSREVA.75.022515.
Burzo, A. M., Chugreev, A. V., & Sokolov, A. V. Stimulated rotational Raman generation controlled by strongly driven vibrational coherence in molecular deuterium. United States. doi:10.1103/PHYSREVA.75.022515.
Burzo, A. M., Chugreev, A. V., and Sokolov, A. V. Thu . "Stimulated rotational Raman generation controlled by strongly driven vibrational coherence in molecular deuterium". United States. doi:10.1103/PHYSREVA.75.022515.
@article{osti_20982114,
title = {Stimulated rotational Raman generation controlled by strongly driven vibrational coherence in molecular deuterium},
author = {Burzo, A. M. and Chugreev, A. V. and Sokolov, A. V.},
abstractNote = {We report an experimental observation of simultaneous rotational and vibrational collinear Raman generation in low pressure cooled deuterium gas, with only two narrow-band laser pulses applied at the input of the molecular cell. Only the fundamental vibrational transition Q{sub 1} (0) is driven strongly in this experiment. However, in addition to efficient vibrational Raman generation we observe generation of a large number of rotational sidebands (more than 100) corresponding to S{sub 0} (0) transition. We notice that fine-tuning of the frequency difference of the driving fields near the vibrational Raman resonance changes dramatically the aspects of the generated spectrum and the efficiency of rotational generation: from complete suppression of a self-starting stimulated rotational Raman generation to a strong enhancement of two orders of magnitude. We conduct a numerical analysis that allows us to attribute this behavior to quantum interference among the probability amplitudes of the three molecular states involved.},
doi = {10.1103/PHYSREVA.75.022515},
journal = {Physical Review. A},
number = 2,
volume = 75,
place = {United States},
year = {Thu Feb 15 00:00:00 EST 2007},
month = {Thu Feb 15 00:00:00 EST 2007}
}