Multi-phonon relaxation of the H- local mode in CaF2

C. P. Davison; J. A. Campbell; J. R. Engholm; H. A. Schwettman; U. Happek

doi:10.1016/S0022-2313(97)00167-1

Multi-phonon relaxation of the H^- local mode in CaF₂

C. P. Davison, J. A. Campbell, J. R. Engholm, H. A. Schwettman, U. Happek^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

We have investigated the non-radiative relaxation of the substitutional H^- local mode (v = 965 cm^-1) in CaF₂. This system is attractive due to its simplicity, the only possible decay mechanism, aside from radiative relaxation, is non-radiative multiphonon decay into host phonons. Saturation experiments were performed at the Stanford Picosecond Free Electron Laser Center, using a pump-probe technique. We find an energy relaxation time T₁ of 45 ps at low temperature. We compare this result with the relaxation of the local mode of an interstitial H^- ion next to a Lanthanum impurity ion, and find a much more rapid relaxation time T₁ of 6 ps.

Original language	English
Pages (from-to)	628-631
Number of pages	4
Journal	Journal of Luminescence
Volume	76-77
DOIs	https://doi.org/10.1016/S0022-2313(97)00167-1
Publication status	Published - Feb 1998
Externally published	Yes

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@article{61592cbf503f48688a3cfd6bd8cb9219,

title = "Multi-phonon relaxation of the H- local mode in CaF2",

abstract = "We have investigated the non-radiative relaxation of the substitutional H- local mode (v = 965 cm-1) in CaF2. This system is attractive due to its simplicity, the only possible decay mechanism, aside from radiative relaxation, is non-radiative multiphonon decay into host phonons. Saturation experiments were performed at the Stanford Picosecond Free Electron Laser Center, using a pump-probe technique. We find an energy relaxation time T1 of 45 ps at low temperature. We compare this result with the relaxation of the local mode of an interstitial H- ion next to a Lanthanum impurity ion, and find a much more rapid relaxation time T1 of 6 ps.",

keywords = "CaF, Free electron laser, Local modes, Non-radiative relaxation",

author = "Davison, {C. P.} and Campbell, {J. A.} and Engholm, {J. R.} and Schwettman, {H. A.} and U. Happek",

year = "1998",

month = feb,

doi = "10.1016/S0022-2313(97)00167-1",

language = "English",

volume = "76-77",

pages = "628--631",

journal = "Journal of Luminescence",

issn = "0022-2313",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Multi-phonon relaxation of the H- local mode in CaF2

AU - Davison, C. P.

AU - Campbell, J. A.

AU - Engholm, J. R.

AU - Schwettman, H. A.

AU - Happek, U.

PY - 1998/2

Y1 - 1998/2

N2 - We have investigated the non-radiative relaxation of the substitutional H- local mode (v = 965 cm-1) in CaF2. This system is attractive due to its simplicity, the only possible decay mechanism, aside from radiative relaxation, is non-radiative multiphonon decay into host phonons. Saturation experiments were performed at the Stanford Picosecond Free Electron Laser Center, using a pump-probe technique. We find an energy relaxation time T1 of 45 ps at low temperature. We compare this result with the relaxation of the local mode of an interstitial H- ion next to a Lanthanum impurity ion, and find a much more rapid relaxation time T1 of 6 ps.

AB - We have investigated the non-radiative relaxation of the substitutional H- local mode (v = 965 cm-1) in CaF2. This system is attractive due to its simplicity, the only possible decay mechanism, aside from radiative relaxation, is non-radiative multiphonon decay into host phonons. Saturation experiments were performed at the Stanford Picosecond Free Electron Laser Center, using a pump-probe technique. We find an energy relaxation time T1 of 45 ps at low temperature. We compare this result with the relaxation of the local mode of an interstitial H- ion next to a Lanthanum impurity ion, and find a much more rapid relaxation time T1 of 6 ps.

KW - CaF

KW - Free electron laser

KW - Local modes

KW - Non-radiative relaxation

UR - http://www.scopus.com/inward/record.url?scp=0031998341&partnerID=8YFLogxK

U2 - 10.1016/S0022-2313(97)00167-1

DO - 10.1016/S0022-2313(97)00167-1

M3 - Article

SN - 0022-2313

VL - 76-77

SP - 628

EP - 631

JO - Journal of Luminescence

JF - Journal of Luminescence

ER -

Multi-phonon relaxation of the H^- local mode in CaF₂

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