Optical properties of LHPG sapphire fibers

Rick K. Nubling; James A. Harrington

doi:10.1117/12.237565

5 April 1996 Optical properties of LHPG sapphire fibers

Proceedings Volume 2677, Biomedical Fiber Optics; (1996) https://doi.org/10.1117/12.237565
Event: Photonics West '96, 1996, San Jose, CA, United States

Abstract

Sapphire optical fibers have been grown using the laser-heated pedestal-growth method with losses as low as 0.3 dB/m at 2.94 micrometers and lengths as long as 5 m. With the incorporation of a computer-controlled feedback system we have been able to grow fibers with less than plus or minus 0.5% diameter variation, or plus or minus 1.5 micrometers for a 300 micrometer fiber. We have been able to decrease the loss in these fibers through a post-growth anneal at 1000 degrees Celsius in air; from 5.4 dB/m to 1.5 dB/m at 543 nm and from 0.4 dB/m to 0.3 dB/m at 2.94 micrometer. These fibers delivered 4.7 W at 10 Hz of Er:YAG laser power.

Citation Download Citation

Rick K. Nubling and James A. Harrington "Optical properties of LHPG sapphire fibers", Proc. SPIE 2677, Biomedical Fiber Optics, (5 April 1996); https://doi.org/10.1117/12.237565

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