Spectroscopy of high index contrast Yb:Ta2O5 waveguides for lasing applications

6th International Conference on Optical, Optoelectronic and Photonic Materials and Applications 2014

Aghajani, A.^1 ; Murugan, G.S.^1 ; Sessions, N.P.^1 ; Apostolopoulos, V.^2 ; Wilkinson, J.S.^1

Optoelectronics Research Centre, Faculty of Physical Sciences and Engineering, University of Southampton, Southampton

1BJ, United Kingdom^1

School of Physics and Astronomy, Faculty of Physical Sciences and Engineering, University of Southampton, Southampton, United Kingdom^2

关键词: Candidate materials;    Emission spectrums;    Fluorescence band;    Fluorescence emission peaks;    High index contrast;    Integrated laser;    Peak absorption;    Ytterbium-doped;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/619/1/012031/pdf
DOI  :  10.1088/1742-6596/619/1/012031

来源: IOP

【 摘 要 】

Ytterbium-doped waveguides are required for compact integrated lasers and Yb- doped Ta2O5is a promising candidate material. The design, fabrication and spectroscopic characterisation of Yb:Ta2O5rib waveguides are described. The peak absorption cross-section was measured to be 2.75×10-20cm2at 975 nm. The emission spectrum was found to have a fluorescence emission peak at a wavelength of 976 nm with a peak cross-section of 2.9×10-20cm2and a second broad fluorescence band spanning from 990 nm to 1090 nm. The excited- state life time was measured to be 260 μs.