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Article Dans Une Revue Optical Materials Année : 2022

Spontaneous emission enhancement based on thin-film chalcogenide/fluoride one dimensional photonic crystal

X Gao
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Hongli Ma
Z Liu
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Résumé

We report the fabrication of a one-dimensional photonic crystal microcavity via co-evaporation with electron beam/thermal evaporation process, which, to the best of our knowledge, is the first rare-earth doped onedimensional photonic crystal based on chalcogenide/fluoride thin films. The microcavity was made of a half wave dysprosium doped Ga(2)Se(3 )layer sandwiched between two embedded Ga2Se3/YF(3 )distributed Bragg reflectors. Near infrared transmittance spectra indicated that the stopband region from 1090 nm to 1515 nm was formed and a cavity resonance centered at 1342 nm. A cavity quality factor of 153 was achieved resulting in a 53 fold enhancement in spontaneous emission intensity. This photonic crystal microcavity configuration offers a new route to mid-wavelength and long-wavelength infrared fluorescence enhancement, which has attracted considerable interest for potential applications, such as fluorescence-based imaging and biomedical sensing.
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Dates et versions

hal-03715372 , version 1 (06-07-2022)

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X Gao, Michel Cathelinaud, Xianghua Zhang, Hongli Ma, Z Liu. Spontaneous emission enhancement based on thin-film chalcogenide/fluoride one dimensional photonic crystal. Optical Materials, 2022, 130, pp.112587. ⟨10.1016/j.optmat.2022.112587⟩. ⟨hal-03715372⟩
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