Pump-probe study of E(TO) polaritons in Zn-doped LiNbO3

C. C. Lee; C. T. Chia; Y. M. Chang; M. L. Sun; M. L. Hu

doi:10.1143/JJAP.43.6829

Pump-probe study of E(TO) polaritons in Zn-doped LiNbO₃

C. C. Lee, C. T. Chia^*, Y. M. Chang, M. L. Sun, M. L. Hu

^*Corresponding author for this work

Department of Physics

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

6 Citations (Scopus)

Abstract

Results of femtosecond pump-probe measurement of E(TO)-like polaritons in Zn-doped lithium niobate crystals are presented. The impulsive-stimulated-Raman-induced three delay-time oscillations, ω ₁, ω₂ and ω₃, are found and assigned to the linear combinations of three lowest E(TO)-like polaritons, ν₁, ν₂, and ν₃, which are ω ₁ = ν₂ - ν₁, ω₂ = ν₃ - ν₁ and ω₃ = 2ν ₁. The obtained frequencies of ω₁, ω ₂ and ω₃ are well explained by dielectric dispersion calculation. The lifetimes of these oscillations induced by the electro optical effect are also deduced, and they are strongly correlated with the Raman lineshape of E(TO) phonons. Our results also imply that the vibrations of E(TO₁) and E(TO₂) are mainly attributed to the Nb and O atomic motions, while the vibration of E(TO₃) is dominated by the defect structure.

Original language	English
Pages (from-to)	6829-6833
Number of pages	5
Journal	Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume	43
Issue number	9 B
DOIs	https://doi.org/10.1143/JJAP.43.6829
Publication status	Published - 2004 Sept

Keywords

Dephasing time
E(TO) phonon
Lithium niobate
Polariton
Raman
Zn doped

ASJC Scopus subject areas

General Engineering
General Physics and Astronomy

Access to Document

10.1143/JJAP.43.6829

Cite this

@article{58ce1833d14c4e34978404404f9c8027,

title = "Pump-probe study of E(TO) polaritons in Zn-doped LiNbO3",

abstract = "Results of femtosecond pump-probe measurement of E(TO)-like polaritons in Zn-doped lithium niobate crystals are presented. The impulsive-stimulated-Raman-induced three delay-time oscillations, ω 1, ω2 and ω3, are found and assigned to the linear combinations of three lowest E(TO)-like polaritons, ν1, ν2, and ν3, which are ω 1 = ν2 - ν1, ω2 = ν3 - ν1 and ω3 = 2ν 1. The obtained frequencies of ω1, ω 2 and ω3 are well explained by dielectric dispersion calculation. The lifetimes of these oscillations induced by the electro optical effect are also deduced, and they are strongly correlated with the Raman lineshape of E(TO) phonons. Our results also imply that the vibrations of E(TO1) and E(TO2) are mainly attributed to the Nb and O atomic motions, while the vibration of E(TO3) is dominated by the defect structure.",

keywords = "Dephasing time, E(TO) phonon, Lithium niobate, Polariton, Raman, Zn doped",

author = "Lee, {C. C.} and Chia, {C. T.} and Chang, {Y. M.} and Sun, {M. L.} and Hu, {M. L.}",

year = "2004",

month = sep,

doi = "10.1143/JJAP.43.6829",

language = "English",

volume = "43",

pages = "6829--6833",

journal = "Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers",

issn = "0021-4922",

publisher = "Japan Society of Applied Physics",

number = "9 B",

}

TY - JOUR

T1 - Pump-probe study of E(TO) polaritons in Zn-doped LiNbO3

AU - Lee, C. C.

AU - Chia, C. T.

AU - Chang, Y. M.

AU - Sun, M. L.

AU - Hu, M. L.

PY - 2004/9

Y1 - 2004/9

N2 - Results of femtosecond pump-probe measurement of E(TO)-like polaritons in Zn-doped lithium niobate crystals are presented. The impulsive-stimulated-Raman-induced three delay-time oscillations, ω 1, ω2 and ω3, are found and assigned to the linear combinations of three lowest E(TO)-like polaritons, ν1, ν2, and ν3, which are ω 1 = ν2 - ν1, ω2 = ν3 - ν1 and ω3 = 2ν 1. The obtained frequencies of ω1, ω 2 and ω3 are well explained by dielectric dispersion calculation. The lifetimes of these oscillations induced by the electro optical effect are also deduced, and they are strongly correlated with the Raman lineshape of E(TO) phonons. Our results also imply that the vibrations of E(TO1) and E(TO2) are mainly attributed to the Nb and O atomic motions, while the vibration of E(TO3) is dominated by the defect structure.

AB - Results of femtosecond pump-probe measurement of E(TO)-like polaritons in Zn-doped lithium niobate crystals are presented. The impulsive-stimulated-Raman-induced three delay-time oscillations, ω 1, ω2 and ω3, are found and assigned to the linear combinations of three lowest E(TO)-like polaritons, ν1, ν2, and ν3, which are ω 1 = ν2 - ν1, ω2 = ν3 - ν1 and ω3 = 2ν 1. The obtained frequencies of ω1, ω 2 and ω3 are well explained by dielectric dispersion calculation. The lifetimes of these oscillations induced by the electro optical effect are also deduced, and they are strongly correlated with the Raman lineshape of E(TO) phonons. Our results also imply that the vibrations of E(TO1) and E(TO2) are mainly attributed to the Nb and O atomic motions, while the vibration of E(TO3) is dominated by the defect structure.

KW - Dephasing time

KW - E(TO) phonon

KW - Lithium niobate

KW - Polariton

KW - Raman

KW - Zn doped

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