Yang T.-ILin Y.-CWang S.-CSHENG-LUNG HUANG2022-04-252022-04-25202121593930https://www.scopus.com/inward/record.uri?eid=2-s2.0-85103672608&doi=10.1364%2fOME.414006&partnerID=40&md5=c086f68996d2f9bf10abf687306908a6https://scholars.lib.ntu.edu.tw/handle/123456789/607288Cr4+: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 AgreementChromium compoundsCoherent scatteringCrystal whiskersGrowth rateInfrared devicesLight sourcesOptical tomographyYttrium compoundsAxial resolutionsBroadband emissionLaser heated pedestal growthNear InfraredNear infrared light sourcesOrthosilicateTissue penetrationsY2SiO5 crystalSpinodal decomposition[SDGs]SDG7journal article10.1364/OME.4140062-s2.0-85103672608