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 µm in free space.

中文翻译：

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玻璃包覆铬掺杂钇原硅酸钇晶体光纤的近红外宽带发射

Cr ⁴⁺：Y ₂ SiO ₅晶体纤维通过激光加热的基座生长法生长。在低的生长速度下观察到严重的旋节线分解域。以30 mm / min的生长速度，旋节线分解面积比降低到0.4％。使用硼硅酸盐作为包层，产生了0.85 mW的宽带发射，其3dB带宽为246 nm（以1257 nm为中心）。近红外光源非常适合光学相干断层扫描，并具有减少的散射，可穿透深层组织。在自由空间中，估计的轴向分辨率为2.8 µm。