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

Journal of Luminescence

The investigation of nonequilibrium phonon dynamics using defect induced one phonon absorption

William M. Dennis

Published Apr 1, 1994• 3 citations
Publisher
DOI
10.1016/0022-2313(94)90094-9

Related papers

Intensity Rules for the Defect-activated One-Phonon Absorption in Diamond

佐 山口, 33375, 33376

•Jan 1, 1969•0 citations

Collective excitation transfer dynamics due to locally non-thermal phonon environmentII

Ryo Okada, Tomoaki Yazaki, Kazuharu Uchiyama +3 more

The Japan Society of Applied Physics•Feb 3, 2017•0 citations

Spectral and Temporal Dynamics of Nonequilibrium Phonons in YAG:Pr3+

Xiaojun Wang, William M. Dennis

We have investigated the spectral and temporal dynamics associated with phonon decay in the YAG:Pr3+ system at a range of temperature between 9 and 25 K. Nonequilibrium phonons were generated using defect induced one phonon absorption (DIOPA) of far infrared (FIR) radiation1. Phonon detection was achieved optically using a variation of absorption vibronic sideband phonon spectroscopy2.

Spectral Hole-Burning and Related Spectroscopies: Science and Applications•Jan 1, 1991•0 citations

Phonon coherent states in transient phenomena

A. Giorgetti, Nice Terzi

Solid State Communications•Aug 1, 1981•25 citations

Dynamics of monochromatic nonequilibrium phonons generated by defect-induced one-phonon absorption

W. A. Tolbert, William M. Dennis, William M. Yen

Defect-induced one-phonon absorption1 of far-infrared radiation is used to generate monochromatic nonequilibrium phonon populations in LaF3:Pr3+ at a range of frequencies throughout the acoustic band. The pump source for this generation mechanism is a transversely excited atmospheric-pressure CO2-laser-pumped superradiant cell. Phonon occupation numbers of order 10 are generated. Phonons are optically detected in a time-resolved frequency-selective manner by using the anti-Stokes absorption sideband of the 3P0 state of Pr3+. The lifetime of these phonons is determined and is found to obey the ω-5 dependence as predicted by the isotropic dispersionless model for anharmonic decay of acoustic phonons.2 The spectral dynamics associated with the decay of these phonons is also investigated and is compared with a rate-equation analysis that includes backfeeding of the decay products. The production of double-frequency phonons by a three-phonon confluence process is also demonstrated.

Annual Meeting Optical Society of America•Jan 1, 1990•0 citations

Dynamics of monochromatically generated nonequilibrium phonons in LaF3 : Pr3+

W. A. Tolbert, William M. Dennis, William M. Yen

The temporal evolution of nonequilibrium phonon populations in ${\mathrm{LaF}}_{3}$:${\mathrm{Pr}}^{3+}$ is investigated at low temperatures (1.8 K) utilizing pulsed, tunable, monochromatic generation and time-resolved, tunable, narrow-band detection. High occupation number, narrow-band phonon populations are generated via far-infrared pumping of defect-induced one-phonon absorption. Time-resolved, frequency-selective detection is provided by optical sideband absorption. Nonequilibrium phonon decay times are measured and attributed to anharmonic decay.

Physical Review Letters•Jul 30, 1990•31 citations
Defect-induced one-phonon absorption1 of far-infrared radiation is used to generate monochromatic nonequilibrium phonon populations in LaF3:Pr3+ at a range of frequencies throughout the acoustic band. The pump source for this generation mechanism is a transversely excited atmospheric-pressure CO2-laser-pumped superradiant cell. Phonon occupation numbers of order 10 are generated. Phonons are optically detected in a time-resolved frequency-selective manner by using the anti-Stokes absorption sideband of the 3P0 state of Pr3+. The lifetime of these phonons is determined and is found to obey the ω-5 dependence as predicted by the isotropic dispersionless model for anharmonic decay of acoustic phonons.2 The spectral dynamics associated with the decay of these phonons is also investigated and is compared with a rate-equation analysis that includes backfeeding of the decay products. The production of double-frequency phonons by a three-phonon confluence process is also demonstrated.
The temporal evolution of nonequilibrium phonon populations in LaF3{\mathrm{LaF}}_{3}LaF3​:Pr3+{\mathrm{Pr}}^{3+}Pr3+ is investigated at low temperatures (1.8 K) utilizing pulsed, tunable, monochromatic generation and time-resolved, tunable, narrow-band detection. High occupation number, narrow-band phonon populations are generated via far-infrared pumping of defect-induced one-phonon absorption. Time-resolved, frequency-selective detection is provided by optical sideband absorption. Nonequilibrium phonon decay times are measured and attributed to anharmonic decay.