Near-infrared broadband emission from glass-clad Cr-doped yttrium orthosilicate crystal fiber
Journal
Optical Materials Express
Journal Volume
11
Journal Issue
3
Pages
674-684
Date Issued
2021
Author(s)
Abstract
Cr4+:Y2SiO5 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 ?m in free space. ? 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
Subjects
Chromium compounds
Coherent scattering
Crystal whiskers
Growth rate
Infrared devices
Light sources
Optical tomography
Yttrium compounds
Axial resolutions
Broadband emission
Laser heated pedestal growth
Near Infrared
Near infrared light sources
Orthosilicate
Tissue penetrations
Y2SiO5 crystal
Spinodal decomposition
SDGs
Type
journal article