Polarization and wavelength insensitive optical feedback control systems for stabilizing CO2 lasers

M. A. Jebali

doi:10.1117/12.2211804

22 April 2016 Polarization and wavelength insensitive optical feedback control systems for stabilizing CO₂ lasers

M. A. Jebali

Proceedings Volume 9730, Components and Packaging for Laser Systems II; 97301C (2016) https://doi.org/10.1117/12.2211804
Event: SPIE LASE, 2016, San Francisco, California, United States

Abstract

Power scaling of multi-kilowatt fiber lasers has been driving the development of glass and fiber processing technology. Designed for processing of large diameter fibers, this technology is used for the fabrication of fiber-based components such as end-pump and side pump combiners, large diameter endcaps, ball lenses for collimators and focusers… The use of 10.6um CO2 lasers as a heating element provides incomparable flexibility, process control and repeatability when compared to conventional heating methods. This low maintenance technology provides an accurate, adjustable and uniform heating area by absorption of fused silica of the 10.6m laser radiation. However, commercially available CO2 lasers can experience power, polarization and mode instability, which becomes important at 20W levels and higher of output power. This paper presents a polarization and wavelength insensitive optical feedback control system for stabilizing commercially available CO2 lasers. Less than 1% power fluctuation was achieved at different laser power levels, ranging from as 5 to 40W.

Citation Download Citation

M. A. Jebali "Polarization and wavelength insensitive optical feedback control systems for stabilizing CO₂ lasers", Proc. SPIE 9730, Components and Packaging for Laser Systems II, 97301C (22 April 2016); https://doi.org/10.1117/12.2211804

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