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Title: Measurement of excited-state lifetime using two-pulse photon echoes in rubidium vapor

Abstract

We report a measurement of the 5P{sub 3/2} excited-state lifetime using two-pulse photon echoes in Rb vapor. The measurement is precise to {approx}1% and agrees with the best measurement of atomic lifetime in Rb. The results suggest that a measurement precise to {approx}0.25% is possible through additional data acquisition and study of systematic effects. The experiment relies on short optical pulses generated from a cw laser using acousto-optic modulators. The excitation pulses are on resonance with the F=3{yields}F{sup '}=4 transition in {sup 85}Rb or the F=2{yields}F{sup '}=3 transition in {sup 87}Rb. The resulting photon echo signal is detected using a heterodyne detection technique. The excited-state lifetime is determined by measuring the exponential decay of the echo intensity as a function of the time between the excitation pulses. We also present a study of the echo intensity as a function of excitation pulse area and compare the results to simulations based on optical Bloch equations. The simulations include the effects of spontaneous emission as well as spatial and temporal variations of the intensities of excitation pulses.

Authors:
; ; ; ; ; ;  [1]
  1. Department of Physics and Astronomy, York University, Toronto Ontario M3J 1P3 (Canada)
Publication Date:
OSTI Identifier:
20929630
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of the Optical Society of America. Part B, Optical Physics; Journal Volume: 24; Journal Issue: 3; Other Information: DOI: 10.1364/JOSAB.24.000671; (c) 2007 Optical Society of America; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; BLOCH EQUATIONS; DATA ACQUISITION; EMISSION; EXCITATION; EXCITED STATES; LASERS; LIFETIME; MODULATION; MULTI-PHOTON PROCESSES; PHOTON-ATOM COLLISIONS; PHOTONS; PULSES; RESONANCE; RUBIDIUM; RUBIDIUM 85; RUBIDIUM 87; SIGNALS; SIMULATION; TIME DEPENDENCE; VAPORS

Citation Formats

Rotberg, E. A., Barrett, B., Beattie, S., Chudasama, S., Weel, M., Chan, I., and Kumarakrishnan, A.. Measurement of excited-state lifetime using two-pulse photon echoes in rubidium vapor. United States: N. p., 2007. Web. doi:10.1364/JOSAB.24.000671.
Rotberg, E. A., Barrett, B., Beattie, S., Chudasama, S., Weel, M., Chan, I., & Kumarakrishnan, A.. Measurement of excited-state lifetime using two-pulse photon echoes in rubidium vapor. United States. doi:10.1364/JOSAB.24.000671.
Rotberg, E. A., Barrett, B., Beattie, S., Chudasama, S., Weel, M., Chan, I., and Kumarakrishnan, A.. Thu . "Measurement of excited-state lifetime using two-pulse photon echoes in rubidium vapor". United States. doi:10.1364/JOSAB.24.000671.
@article{osti_20929630,
title = {Measurement of excited-state lifetime using two-pulse photon echoes in rubidium vapor},
author = {Rotberg, E. A. and Barrett, B. and Beattie, S. and Chudasama, S. and Weel, M. and Chan, I. and Kumarakrishnan, A.},
abstractNote = {We report a measurement of the 5P{sub 3/2} excited-state lifetime using two-pulse photon echoes in Rb vapor. The measurement is precise to {approx}1% and agrees with the best measurement of atomic lifetime in Rb. The results suggest that a measurement precise to {approx}0.25% is possible through additional data acquisition and study of systematic effects. The experiment relies on short optical pulses generated from a cw laser using acousto-optic modulators. The excitation pulses are on resonance with the F=3{yields}F{sup '}=4 transition in {sup 85}Rb or the F=2{yields}F{sup '}=3 transition in {sup 87}Rb. The resulting photon echo signal is detected using a heterodyne detection technique. The excited-state lifetime is determined by measuring the exponential decay of the echo intensity as a function of the time between the excitation pulses. We also present a study of the echo intensity as a function of excitation pulse area and compare the results to simulations based on optical Bloch equations. The simulations include the effects of spontaneous emission as well as spatial and temporal variations of the intensities of excitation pulses.},
doi = {10.1364/JOSAB.24.000671},
journal = {Journal of the Optical Society of America. Part B, Optical Physics},
number = 3,
volume = 24,
place = {United States},
year = {Thu Mar 15 00:00:00 EDT 2007},
month = {Thu Mar 15 00:00:00 EDT 2007}
}