Angle-resolved polarized Raman spectroscopy of KGd(WO4)2 crystals: analysis of coupled lattice vibrations at 768 cm−1 and 901 cm−1

Shen Chen Chen; Yi Chiun Lin; Cheng Ting Tsai; Ting Hua Lu; Songrui Wei; Jung Chen Tung

doi:10.1364/OME.573374

Angle-resolved polarized Raman spectroscopy of KGd(WO₄)₂ crystals: analysis of coupled lattice vibrations at 768 cm⁻¹ and 901 cm⁻¹

Shen Chen Chen
, Yi Chiun Lin
, Cheng Ting Tsai
, Ting Hua Lu
, Songrui Wei
, Jung Chen Tung^*

^*Corresponding author for this work

Department of Physics

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

Abstract

We present a comprehensive experimental and theoretical study of angle-resolved polarized Raman scattering (ARPRS) in N_p-cut KGd(WO₄)₂ (KGW) crystals, focusing on the prominent Raman shifts at 768 cm⁻¹ and 901 cm⁻¹. Raman intensity distributions were recorded under both linear and circular polarization conditions, and the resulting polar plots were interpreted using Raman tensor analysis. The results reveal anisotropic behavior consistent with coupled A_g vibrational modes and indicate spectral overlap from multiple unresolved vibrational contributions. These findings provide valuable insight into the complex vibrational dynamics of KGW and have important implications for optimizing the performance of Raman-active crystals in high-power laser systems.

Original language	English
Pages (from-to)	2817-2825
Number of pages	9
Journal	Optical Materials Express
Volume	15
Issue number	11
DOIs	https://doi.org/10.1364/OME.573374
Publication status	Published - 2025 Nov 1

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials

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10.1364/OME.573374

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title = "Angle-resolved polarized Raman spectroscopy of KGd(WO4)2 crystals: analysis of coupled lattice vibrations at 768 cm−1 and 901 cm−1",

abstract = "We present a comprehensive experimental and theoretical study of angle-resolved polarized Raman scattering (ARPRS) in Np-cut KGd(WO4)2 (KGW) crystals, focusing on the prominent Raman shifts at 768 cm−1 and 901 cm−1. Raman intensity distributions were recorded under both linear and circular polarization conditions, and the resulting polar plots were interpreted using Raman tensor analysis. The results reveal anisotropic behavior consistent with coupled Ag vibrational modes and indicate spectral overlap from multiple unresolved vibrational contributions. These findings provide valuable insight into the complex vibrational dynamics of KGW and have important implications for optimizing the performance of Raman-active crystals in high-power laser systems.",

author = "Chen, \{Shen Chen\} and Lin, \{Yi Chiun\} and Tsai, \{Cheng Ting\} and Lu, \{Ting Hua\} and Songrui Wei and Tung, \{Jung Chen\}",

note = "Publisher Copyright: {\textcopyright} 2025 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement.",

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doi = "10.1364/OME.573374",

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TY - JOUR

T1 - Angle-resolved polarized Raman spectroscopy of KGd(WO4)2 crystals

T2 - analysis of coupled lattice vibrations at 768 cm−1 and 901 cm−1

AU - Chen, Shen Chen

AU - Lin, Yi Chiun

AU - Tsai, Cheng Ting

AU - Lu, Ting Hua

AU - Wei, Songrui

AU - Tung, Jung Chen

PY - 2025/11/1

Y1 - 2025/11/1

N2 - We present a comprehensive experimental and theoretical study of angle-resolved polarized Raman scattering (ARPRS) in Np-cut KGd(WO4)2 (KGW) crystals, focusing on the prominent Raman shifts at 768 cm−1 and 901 cm−1. Raman intensity distributions were recorded under both linear and circular polarization conditions, and the resulting polar plots were interpreted using Raman tensor analysis. The results reveal anisotropic behavior consistent with coupled Ag vibrational modes and indicate spectral overlap from multiple unresolved vibrational contributions. These findings provide valuable insight into the complex vibrational dynamics of KGW and have important implications for optimizing the performance of Raman-active crystals in high-power laser systems.

AB - We present a comprehensive experimental and theoretical study of angle-resolved polarized Raman scattering (ARPRS) in Np-cut KGd(WO4)2 (KGW) crystals, focusing on the prominent Raman shifts at 768 cm−1 and 901 cm−1. Raman intensity distributions were recorded under both linear and circular polarization conditions, and the resulting polar plots were interpreted using Raman tensor analysis. The results reveal anisotropic behavior consistent with coupled Ag vibrational modes and indicate spectral overlap from multiple unresolved vibrational contributions. These findings provide valuable insight into the complex vibrational dynamics of KGW and have important implications for optimizing the performance of Raman-active crystals in high-power laser systems.

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AN - SCOPUS:105020667183

SN - 2159-3930

VL - 15

SP - 2817

EP - 2825

JO - Optical Materials Express

JF - Optical Materials Express

IS - 11

ER -

Angle-resolved polarized Raman spectroscopy of KGd(WO₄)₂ crystals: analysis of coupled lattice vibrations at 768 cm⁻¹ and 901 cm⁻¹

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