Near-infrared broadband emission from glass-clad Cr-doped yttrium orthosilicate crystal fiber

Cr 4+ :Y 2 SiO 5 crystal fiber was grown by the laser-heated pedestal growth method. Severe spinodal decomposition domains were observed at low growth speed. At a growth rate of 30 mm/min, the spinodal decomposition area ratio was reduced to 0.4%. Using borosilicate as the cladding, 0.85 mW of broad...

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Veröffentlicht in:Optical materials express 2021-03, Vol.11 (3), p.674
Hauptverfasser: Yang, Teng-I, Lin, Yu-Chan, Wang, Shih-Chang, Huang, Sheng-Lung
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description Cr 4+ :Y 2 SiO 5 crystal fiber was grown by the laser-heated pedestal growth method. Severe spinodal decomposition domains were observed at low growth speed. At a growth rate of 30 mm/min, the spinodal decomposition area ratio was reduced to 0.4%. Using borosilicate as the cladding, 0.85 mW of broadband emission with a 3-dB bandwidth of 246 nm centered at 1257 nm was generated. The near-infrared light source is eminently suitable for optical coherence tomography with reduced scattering for deep tissue penetration. The estimated axial resolution is 2.8 µm in free space.
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subjects Broadband
Chromium
Coherent scattering
Crystal fibers
Crystal growth
Emission
Laser beam heating
Light sources
Near infrared radiation
Spinodal decomposition
Yttrium
title Near-infrared broadband emission from glass-clad Cr-doped yttrium orthosilicate crystal fiber
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