CO2 laser power delivery with an MIR optical fiber bundle

Dawei Liang; Joao M. Coelho; M. Teixeira

doi:10.1117/12.216982

21 August 1995 CO₂ laser power delivery with an MIR optical fiber bundle

Dawei Liang, Joao M. Coelho, M. Teixeira

Proceedings Volume 2538, Nonimaging Optics: Maximum Efficiency Light Transfer III; (1995) https://doi.org/10.1117/12.216982
Event: SPIE's 1995 International Symposium on Optical Science, Engineering, and Instrumentation, 1995, San Diego, CA, United States

Abstract

The solid core polycrystalline middle infrared region (MIR) optical fiber has no bending loss and has been successfully used as a flexible CO₂ laser guide for medical operations. By using a suitable cooling we have improved the power handling capacity for (phi) 1 mm MIR- fiber to 50 W. However this is far less than the needs for most nonmedical applications, like the 500 W requirements for cork cutting. For this purpose a method was developed to join together several fibers and transmit more power. With a fiber bundle composed of 4 MIR fibers, about 120 W is transmitted (with about 50% efficiency for cw power). Preliminary tests were made to improve the power handling capacity and efficiency, so that, in future, about 500 W CO₂ laser power can be delivered by using a larger fiber bundle.

Citation Download Citation

Dawei Liang, Joao M. Coelho, and M. Teixeira "CO₂ laser power delivery with an MIR optical fiber bundle", Proc. SPIE 2538, Nonimaging Optics: Maximum Efficiency Light Transfer III, (21 August 1995); https://doi.org/10.1117/12.216982

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