Eﬀect of γ-ray irradiation on spectral characteristics of
Cr-doped MgAl2O4 crystal

doi:10.3969/j.issn.1007-5461.2023.01.009

Chinese Journal of Quantum Electronics ›› 2023, Vol. 40 ›› Issue (1): 79-84.doi: 10.3969/j.issn.1007-5461.2023.01.009

• Laser Tech. and Devices • Previous Articles Next Articles

Eﬀect of γ-ray irradiation on spectral characteristics of Cr-doped MgAl2O4 crystal

SUN Guihua 1∗ , ZHANG Qingli 1 , LUO Jianqiao 1 , GAO Jinyun 1 , LIU Wenpeng 1 , LI Jiahong 1,2 , CHEN Yingying 1,2

( 1 Anhui Provincial Key Laboratory of Photonic Devices and Materials, Anhui Institute of Optics and Fine Mechanics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China; 2 University of Science and Technology of China, Hefei 230026, China )

Received:2021-04-23 Revised:2021-07-13 Published:2023-01-28 Online:2023-01-28

Abstract

Abstract: In order to evaluate the eﬀect of irradiation on the spectral properties of Cr:MgAl2O4 crystal, Raman spectra, transmittance spectra and ﬂuorescence properties of the polished Cr:MgAl2O4 crystal were measured before and after γ irradiation with a dose of 100 Mrad, and the mechanism of the irradiation eﬀect were analyzed. The results show that the position and intensity of Raman vibration peak are both aﬀected by irradiation, but the number of vibration peaks does not change. And due to the absorption of color center, the transmittance in the wavelength range of 250-600 nm decreases obviouslyafter γ irradiation. The ﬂuorescence emission peaks of the samples after irradiation are consistent with those of before irradiation, while the ﬂuorescence emission intensity decreases signiﬁcantly and the ﬂuorescence lifetime increases signiﬁcantly after irradiation.

Key words: laser crystal, γ irradiation, Cr:MgAl2O4 crystal, spectral properties

CLC Number:

TN244

SUN Guihua ∗ , ZHANG Qingli , LUO Jianqiao , GAO Jinyun , LIU Wenpeng , LI Jiahong , , CHEN Yingying , . Eﬀect of γ-ray irradiation on spectral characteristics of Cr-doped MgAl2O4 crystal[J]. Chinese Journal of Quantum Electronics, 2023, 40(1): 79-84.

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Eﬀect of γ-ray irradiation on spectral characteristics of Cr-doped MgAl2O4 crystal

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