The Experts below are selected from a list of 324 Experts worldwide ranked by ideXlab platform

Junjie Zhang - One of the best experts on this subject based on the ideXlab platform.

  • investigation on er3 ho3 co doped Silicate Glass for 2µm fiber lasers
    Journal of Luminescence, 2015
    Co-Authors: Feifei Huang, Junjie Zhang, Lili Hu, Jimeng Cheng, Danping Chen
    Abstract:

    Abstract A stable Er 3+ /Ho 3+ co-doped lead Silicate Glass is developed. Luminescent properties are recorded under pumping with 808 and 1550 nm lasers. Energy-transfer mechanism and efficiency are analyzed. Energy-transfer efficiency from Er 3+ : 4 I 13/2 to Ho 3+ : 5 I 7 reaches 93.8% at 3 mol% Ho 2 O 3 doping concentration. Strong luminescence is detected when pumped at 1550 nm because of efficient energy transfer from Er 3+ : 4 I 13/2 to Ho 3+ : 5 I 7 . Peak gain coefficient at 2056 nm is detected as 1.62 cm −1 . The excellent luminescent property and high stability indicate that Er 3+ /Ho 3+ co-doped lead Silicate Glass can be applied in 2 µm fiber lasers.

  • 2 µm luminescence and energy transfer characteristics in tm3 ho3 co doped Silicate Glass
    Journal of Quantitative Spectroscopy & Radiative Transfer, 2013
    Co-Authors: Yanyan Guo, Ying Tian, Gongxun Bai, Junjie Zhang
    Abstract:

    Abstract A Tm3+/Ho3+ co-doped Silicate Glass with good thermal stability is prepared by the melt-quenching method. Efficient ∼2 μm emission is observed under 808 nm laser excitation. The infrared emission characteristics and energy transfer mechanism are investigated. To obtain efficient ∼2 μm emission, the optimized concentration ratio of Tm3+ to Ho3+ is found to be 0.75:0.4 in the present Silicate Glass system. Additionally, the energy transfer between Tm3+ and Ho3+ plays an important role in the luminescence mechanism and energy transfer efficiency from Tm3+ to Ho3+ reaches 88%. The emission property together with good thermal property indicates that Tm3+/Ho3+ co-doped Silicate Glass is a potential kind of laser Glass for efficient 2 μm laser.

  • ∼2 µm Luminescence and energy transfer characteristics in Tm3+/Ho3+co-doped Silicate Glass
    Journal of Quantitative Spectroscopy and Radiative Transfer, 2013
    Co-Authors: Yanyan Guo, Ying Tian, Gongxun Bai, Junjie Zhang
    Abstract:

    Abstract A Tm3+/Ho3+ co-doped Silicate Glass with good thermal stability is prepared by the melt-quenching method. Efficient ∼2 μm emission is observed under 808 nm laser excitation. The infrared emission characteristics and energy transfer mechanism are investigated. To obtain efficient ∼2 μm emission, the optimized concentration ratio of Tm3+ to Ho3+ is found to be 0.75:0.4 in the present Silicate Glass system. Additionally, the energy transfer between Tm3+ and Ho3+ plays an important role in the luminescence mechanism and energy transfer efficiency from Tm3+ to Ho3+ reaches 88%. The emission property together with good thermal property indicates that Tm3+/Ho3+ co-doped Silicate Glass is a potential kind of laser Glass for efficient 2 μm laser.

  • Investigation on Tm3+-doped Silicate Glass for 1.8 μm emission
    Journal of Luminescence, 2012
    Co-Authors: Gongxun Bai, Yanyan Guo, Junjie Zhang
    Abstract:

    Abstract A Tm3+-doped Silicate Glass (SiO2–CaO–Na2O–K2O) with good thermal stability is prepared by the melt-quenching method. Intense 1.8 μm emission is obtained when pumped by an 808 nm laser diode. Based on the measured absorption spectra, radiative properties are predicted using Judd–Ofelt theory and Judd–Ofelt parameters Ωλ (λ=2, 4, 6), as well as absorption and emission cross-sections are calculated and analyzed. The difference between the measured Tm3+:3F4 lifetime and the calculated lifetime is also discussed. The emission property together with good thermal property indicates that Tm3+-doped Silicate Glass is a potential kind of laser Glass for efficient 2 μm laser.

Yanyan Guo - One of the best experts on this subject based on the ideXlab platform.

  • 2 µm luminescence and energy transfer characteristics in tm3 ho3 co doped Silicate Glass
    Journal of Quantitative Spectroscopy & Radiative Transfer, 2013
    Co-Authors: Yanyan Guo, Ying Tian, Gongxun Bai, Junjie Zhang
    Abstract:

    Abstract A Tm3+/Ho3+ co-doped Silicate Glass with good thermal stability is prepared by the melt-quenching method. Efficient ∼2 μm emission is observed under 808 nm laser excitation. The infrared emission characteristics and energy transfer mechanism are investigated. To obtain efficient ∼2 μm emission, the optimized concentration ratio of Tm3+ to Ho3+ is found to be 0.75:0.4 in the present Silicate Glass system. Additionally, the energy transfer between Tm3+ and Ho3+ plays an important role in the luminescence mechanism and energy transfer efficiency from Tm3+ to Ho3+ reaches 88%. The emission property together with good thermal property indicates that Tm3+/Ho3+ co-doped Silicate Glass is a potential kind of laser Glass for efficient 2 μm laser.

  • ∼2 µm Luminescence and energy transfer characteristics in Tm3+/Ho3+co-doped Silicate Glass
    Journal of Quantitative Spectroscopy and Radiative Transfer, 2013
    Co-Authors: Yanyan Guo, Ying Tian, Gongxun Bai, Junjie Zhang
    Abstract:

    Abstract A Tm3+/Ho3+ co-doped Silicate Glass with good thermal stability is prepared by the melt-quenching method. Efficient ∼2 μm emission is observed under 808 nm laser excitation. The infrared emission characteristics and energy transfer mechanism are investigated. To obtain efficient ∼2 μm emission, the optimized concentration ratio of Tm3+ to Ho3+ is found to be 0.75:0.4 in the present Silicate Glass system. Additionally, the energy transfer between Tm3+ and Ho3+ plays an important role in the luminescence mechanism and energy transfer efficiency from Tm3+ to Ho3+ reaches 88%. The emission property together with good thermal property indicates that Tm3+/Ho3+ co-doped Silicate Glass is a potential kind of laser Glass for efficient 2 μm laser.

  • Investigation on Tm3+-doped Silicate Glass for 1.8 μm emission
    Journal of Luminescence, 2012
    Co-Authors: Gongxun Bai, Yanyan Guo, Junjie Zhang
    Abstract:

    Abstract A Tm3+-doped Silicate Glass (SiO2–CaO–Na2O–K2O) with good thermal stability is prepared by the melt-quenching method. Intense 1.8 μm emission is obtained when pumped by an 808 nm laser diode. Based on the measured absorption spectra, radiative properties are predicted using Judd–Ofelt theory and Judd–Ofelt parameters Ωλ (λ=2, 4, 6), as well as absorption and emission cross-sections are calculated and analyzed. The difference between the measured Tm3+:3F4 lifetime and the calculated lifetime is also discussed. The emission property together with good thermal property indicates that Tm3+-doped Silicate Glass is a potential kind of laser Glass for efficient 2 μm laser.

Ying Tian - One of the best experts on this subject based on the ideXlab platform.

  • 2 µm luminescence and energy transfer characteristics in tm3 ho3 co doped Silicate Glass
    Journal of Quantitative Spectroscopy & Radiative Transfer, 2013
    Co-Authors: Yanyan Guo, Ying Tian, Gongxun Bai, Junjie Zhang
    Abstract:

    Abstract A Tm3+/Ho3+ co-doped Silicate Glass with good thermal stability is prepared by the melt-quenching method. Efficient ∼2 μm emission is observed under 808 nm laser excitation. The infrared emission characteristics and energy transfer mechanism are investigated. To obtain efficient ∼2 μm emission, the optimized concentration ratio of Tm3+ to Ho3+ is found to be 0.75:0.4 in the present Silicate Glass system. Additionally, the energy transfer between Tm3+ and Ho3+ plays an important role in the luminescence mechanism and energy transfer efficiency from Tm3+ to Ho3+ reaches 88%. The emission property together with good thermal property indicates that Tm3+/Ho3+ co-doped Silicate Glass is a potential kind of laser Glass for efficient 2 μm laser.

  • Spectroscopic properties of 1.8 um emission in Tm3+ doped bismuth Silicate Glass
    Journal of Luminescence, 2013
    Co-Authors: Guoying Zhao, Ying Tian, Xin Wang, Huiyan Fan
    Abstract:

    Abstract The emission properties around 1.8 μm in Tm 3+ doped bismuth Silicate Glass have been investigated. Based on the obtained Raman spectroscopy and differential scanning calorimetry curves, it is found the introduced Bi 2 O 3 can efficiently reduce the phonon energy of Silicate Glass to 926 cm −1 . The energy gap between Glass transition temperature and onset temperature of crystallization is 169 °C. The OH − content maintains lower in Glass by bubbling dry O 2 during the melting process. The cut-off wavelength in mid-infrared range is as long as 5 μm. Bismuth Silicate Glass has high radiative transition probability of 238.80 s −1 corresponding to the Tm 3+ : 3 F 4 → 3 H 6 transition compared with conventional Silicate Glasses. The strongest emission at 1.8 μm with a large full width at half-maximum of 238 nm is achieved from this bismuth Silicate Glass doped with 0.9 mol% Tm 2 O 3 . Its fluorescence lifetime at 1.8 μm is 640 μs.

  • ∼2 µm Luminescence and energy transfer characteristics in Tm3+/Ho3+co-doped Silicate Glass
    Journal of Quantitative Spectroscopy and Radiative Transfer, 2013
    Co-Authors: Yanyan Guo, Ying Tian, Gongxun Bai, Junjie Zhang
    Abstract:

    Abstract A Tm3+/Ho3+ co-doped Silicate Glass with good thermal stability is prepared by the melt-quenching method. Efficient ∼2 μm emission is observed under 808 nm laser excitation. The infrared emission characteristics and energy transfer mechanism are investigated. To obtain efficient ∼2 μm emission, the optimized concentration ratio of Tm3+ to Ho3+ is found to be 0.75:0.4 in the present Silicate Glass system. Additionally, the energy transfer between Tm3+ and Ho3+ plays an important role in the luminescence mechanism and energy transfer efficiency from Tm3+ to Ho3+ reaches 88%. The emission property together with good thermal property indicates that Tm3+/Ho3+ co-doped Silicate Glass is a potential kind of laser Glass for efficient 2 μm laser.

  • bismuth Silicate Glass a new choice for 2 μm fiber lasers
    Optical Materials, 2012
    Co-Authors: Jia Ding, Ying Tian, Guoying Zhao, Wei Chen, Lili Hu
    Abstract:

    Abstract We report on a new Yb 3+ /Tm 3+ /Ho 3+ co-doped bismuth Silicate Glass: SiO 2 –Bi 2 O 3 –R 2 O (R = Li, Na, K) for 2 μm fiber lasers. Bi 2 O 3 was introduced into alkali Silicate Glass to optimize 2 μm emission properties. Physical, chemical and spectroscopic properties of Yb 3+ /Tm 3+ /Ho 3+ co-doped SiO 2 –Bi 2 O 3 –R 2 O (SBR) Glass were presented. The Yb 3+ /Tm 3+ /Ho 3+ co-doped SBR Glass shows excellent thermal stability (Δ T  = 162 °C), an intense 2.0 μm emission pumped by 980 nm LD with a lifetime of 1.33 ms and width of 168 nm, large maximum emission cross section of Ho 3+ (5.3 × 10 −21  cm 2 ), thus large σ em τ product (7.049 × 10 −24  cm 2  s), which suggest its application in 2 μm fiber lasers.

Gongxun Bai - One of the best experts on this subject based on the ideXlab platform.

  • 2 µm luminescence and energy transfer characteristics in tm3 ho3 co doped Silicate Glass
    Journal of Quantitative Spectroscopy & Radiative Transfer, 2013
    Co-Authors: Yanyan Guo, Ying Tian, Gongxun Bai, Junjie Zhang
    Abstract:

    Abstract A Tm3+/Ho3+ co-doped Silicate Glass with good thermal stability is prepared by the melt-quenching method. Efficient ∼2 μm emission is observed under 808 nm laser excitation. The infrared emission characteristics and energy transfer mechanism are investigated. To obtain efficient ∼2 μm emission, the optimized concentration ratio of Tm3+ to Ho3+ is found to be 0.75:0.4 in the present Silicate Glass system. Additionally, the energy transfer between Tm3+ and Ho3+ plays an important role in the luminescence mechanism and energy transfer efficiency from Tm3+ to Ho3+ reaches 88%. The emission property together with good thermal property indicates that Tm3+/Ho3+ co-doped Silicate Glass is a potential kind of laser Glass for efficient 2 μm laser.

  • ∼2 µm Luminescence and energy transfer characteristics in Tm3+/Ho3+co-doped Silicate Glass
    Journal of Quantitative Spectroscopy and Radiative Transfer, 2013
    Co-Authors: Yanyan Guo, Ying Tian, Gongxun Bai, Junjie Zhang
    Abstract:

    Abstract A Tm3+/Ho3+ co-doped Silicate Glass with good thermal stability is prepared by the melt-quenching method. Efficient ∼2 μm emission is observed under 808 nm laser excitation. The infrared emission characteristics and energy transfer mechanism are investigated. To obtain efficient ∼2 μm emission, the optimized concentration ratio of Tm3+ to Ho3+ is found to be 0.75:0.4 in the present Silicate Glass system. Additionally, the energy transfer between Tm3+ and Ho3+ plays an important role in the luminescence mechanism and energy transfer efficiency from Tm3+ to Ho3+ reaches 88%. The emission property together with good thermal property indicates that Tm3+/Ho3+ co-doped Silicate Glass is a potential kind of laser Glass for efficient 2 μm laser.

  • Investigation on Tm3+-doped Silicate Glass for 1.8 μm emission
    Journal of Luminescence, 2012
    Co-Authors: Gongxun Bai, Yanyan Guo, Junjie Zhang
    Abstract:

    Abstract A Tm3+-doped Silicate Glass (SiO2–CaO–Na2O–K2O) with good thermal stability is prepared by the melt-quenching method. Intense 1.8 μm emission is obtained when pumped by an 808 nm laser diode. Based on the measured absorption spectra, radiative properties are predicted using Judd–Ofelt theory and Judd–Ofelt parameters Ωλ (λ=2, 4, 6), as well as absorption and emission cross-sections are calculated and analyzed. The difference between the measured Tm3+:3F4 lifetime and the calculated lifetime is also discussed. The emission property together with good thermal property indicates that Tm3+-doped Silicate Glass is a potential kind of laser Glass for efficient 2 μm laser.

Takumi Fujiwara - One of the best experts on this subject based on the ideXlab platform.

  • Pockels effect of Silicate Glass-ceramics: Observation of optical modulation in Mach–Zehnder system
    Scientific Reports, 2015
    Co-Authors: Kazuki Yamaoka, Nobuaki Terakado, Yoshiki Yamazaki, Takamichi Miyazaki, Yoshihiro Takahashi, Takumi Fujiwara
    Abstract:

    Silicate Glass has been used for long time because of its advantages from material’s viewpoint. In this paper, we report the observation of Pockels effect by Mach–Zehnder interferometer in polycrystalline ceramics made from a ternary Silicate Glass via crystallization due to heat-treatment, i.e., Glass-ceramics. Since the Silicate system is employed as the precursor, merits of Glass material are fully utilized to fabricate the optical device component, in addition to that of functional crystalline material, leading us to provide an electro-optic device, which is introducible into Glass-fiber network.

  • Pockels effect of Silicate Glass-ceramics: Observation of optical modulation in Mach-Zehnder system.
    Scientific reports, 2015
    Co-Authors: Kazuki Yamaoka, Nobuaki Terakado, Yoshiki Yamazaki, Takamichi Miyazaki, Yoshihiro Takahashi, Takumi Fujiwara
    Abstract:

    Silicate Glass has been used for long time because of its advantages from material’s viewpoint. In this paper, we report the observation of Pockels effect by Mach–Zehnder interferometer in polycrystalline ceramics made from a ternary Silicate Glass via crystallization due to heat-treatment, i.e., Glass-ceramics. Since the Silicate system is employed as the precursor, merits of Glass material are fully utilized to fabricate the optical device component, in addition to that of functional crystalline material, leading us to provide an electro-optic device, which is introducible into Glass-fiber network.