Single-crystal sapphire fibers have been grown with the laser-heated pedestal-growth method with losses as low as 0.3 dB/m at 2.94 μm. With the incorporation of a computer-controlled feedback system, fibers have been grown with less than ±0.5% diameter variation, or ±1.5 μm for a 300-1μm fiber. The losses in these fibers have been reduced further through a postgrowth anneal at 1000 ℃ in air, from 5.41 to 1.5 dB/m at 543 nm and from 0.4-0.3 dB/m at 2.94 μm. These fibers delivered 4.7 W at 10 Hz of Er: YAG laser power. # 1997 Optical Society of America
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机译：蓝宝石单晶纤维已通过激光加热的基座生长法生长，在2.94μm处的损耗低至0.3 dB / m。通过集成计算机控制的反馈系统，光纤的直径变化小于±0.5％，而300-1μm的光纤的直径变化小于±1.5μm。通过在空气中1000℃进行生长后退火，这些光纤中的损耗进一步降低，从543 nm处的5.41降至1.5 dB / m，而在2.94μm处从0.4-0.3 dB / m降低。这些光纤在10 Hz的Er：YAG激光功率下输出4.7W。 ＃1997美国眼镜学会
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