Phonon dynamics in γ-ray irradiated sapphire crystals studied by fs-CARS technique

Xin Du; Mingfu Zhang; Qingkun Meng; Yunfei Song; Xing He; Yanqiang Yang; Jiecai Han

doi:10.1364/OE.18.022937

Phonon dynamics in γ-ray irradiated sapphire crystals studied by fs-CARS technique

Xin Du
, Mingfu Zhang
, Qingkun Meng
, Yunfei Song
, Xing He
, Yanqiang Yang^*
, Jiecai Han

^*Corresponding author for this work

School of Astronautics

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

14 Scopus citations

Abstract

We have studied the ultrafast dynamics of coherent phonons in sapphire crystals irradiated with ⁶⁰Co γ-rays for three different doses by femtosecond time-resolved coherent anti-Stokes Raman scattering (fs-CARS) technique at room temperature. The obtained fs-CARS signals exhibit well-defined quantum beats, which are ascribed to the interference of the 645 and 750 cm^-1 phonon modes. The dephasing times of the two modes both decrease with increasing irradiation dose, which is due to the scattering of coherent phonons by the defects introduced by γ-ray irradiation.

Original language	English
Pages (from-to)	22937-22943
Number of pages	7
Journal	Optics Express
Volume	18
Issue number	22
DOIs	https://doi.org/10.1364/OE.18.022937
State	Published - 25 Oct 2010

Access to Document

10.1364/OE.18.022937

Cite this

@article{10f5cad4ce79430e8c894899fa29a55b,

title = "Phonon dynamics in γ-ray irradiated sapphire crystals studied by fs-CARS technique",

abstract = "We have studied the ultrafast dynamics of coherent phonons in sapphire crystals irradiated with 60Co γ-rays for three different doses by femtosecond time-resolved coherent anti-Stokes Raman scattering (fs-CARS) technique at room temperature. The obtained fs-CARS signals exhibit well-defined quantum beats, which are ascribed to the interference of the 645 and 750 cm-1 phonon modes. The dephasing times of the two modes both decrease with increasing irradiation dose, which is due to the scattering of coherent phonons by the defects introduced by γ-ray irradiation.",

author = "Xin Du and Mingfu Zhang and Qingkun Meng and Yunfei Song and Xing He and Yanqiang Yang and Jiecai Han",

year = "2010",

month = oct,

day = "25",

doi = "10.1364/OE.18.022937",

language = "英语",

volume = "18",

pages = "22937--22943",

journal = "Optics Express",

issn = "1094-4087",

publisher = "Optica Publishing Group (formerly OSA)",

number = "22",

}

TY - JOUR

T1 - Phonon dynamics in γ-ray irradiated sapphire crystals studied by fs-CARS technique

AU - Du, Xin

AU - Zhang, Mingfu

AU - Meng, Qingkun

AU - Song, Yunfei

AU - He, Xing

AU - Yang, Yanqiang

AU - Han, Jiecai

PY - 2010/10/25

Y1 - 2010/10/25

N2 - We have studied the ultrafast dynamics of coherent phonons in sapphire crystals irradiated with 60Co γ-rays for three different doses by femtosecond time-resolved coherent anti-Stokes Raman scattering (fs-CARS) technique at room temperature. The obtained fs-CARS signals exhibit well-defined quantum beats, which are ascribed to the interference of the 645 and 750 cm-1 phonon modes. The dephasing times of the two modes both decrease with increasing irradiation dose, which is due to the scattering of coherent phonons by the defects introduced by γ-ray irradiation.

AB - We have studied the ultrafast dynamics of coherent phonons in sapphire crystals irradiated with 60Co γ-rays for three different doses by femtosecond time-resolved coherent anti-Stokes Raman scattering (fs-CARS) technique at room temperature. The obtained fs-CARS signals exhibit well-defined quantum beats, which are ascribed to the interference of the 645 and 750 cm-1 phonon modes. The dephasing times of the two modes both decrease with increasing irradiation dose, which is due to the scattering of coherent phonons by the defects introduced by γ-ray irradiation.

UR - https://www.scopus.com/pages/publications/78149363528

U2 - 10.1364/OE.18.022937

DO - 10.1364/OE.18.022937

M3 - 文章

AN - SCOPUS:78149363528

SN - 1094-4087

VL - 18

SP - 22937

EP - 22943

JO - Optics Express

JF - Optics Express

IS - 22

ER -

Phonon dynamics in γ-ray irradiated sapphire crystals studied by fs-CARS technique

Abstract

Access to Document

Other files and links

Fingerprint

Cite this