Single-crystal fibers for laser power delivery

Glenn N. Merberg; James A. Harrington

doi:10.1117/12.56576

1 January 1992 Single-crystal fibers for laser power delivery

Glenn N. Merberg, James A. Harrington

Proceedings Volume 1591, Infrared Fiber Optics III; (1992) https://doi.org/10.1117/12.56576
Event: OE Fiber, 1991, Boston, MA, United States

Abstract

Single-crystal sapphire fibers were grown by the laser heated pedestal growth technique. Loss spectra are presented which show attenuation coefficients of less than 1 dB/m at the Er:YAG laser wavelength. Laser pulses of 600 mJ at this wavelength were delivered through the fibers with no laser induced damage. Flexural strength measurements made on these fibers indicate a 0.75% strain to failure when tested under 4-point loading. X-ray photography results show that the crystal quality of fibers grown by this technique is excellent. Initial experiments with a melt extruded teflon cladding on the sapphire fibers are very promising. The teflon is effective at preventing evanescent coupling to water, as might be expected.

Citation Download Citation

Glenn N. Merberg and James A. Harrington "Single-crystal fibers for laser power delivery", Proc. SPIE 1591, Infrared Fiber Optics III, (1 January 1992); https://doi.org/10.1117/12.56576

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