Development of high-power CO2 lasers and laser material processing

Ashish Kumar Nath; Praveen Choudhary; Manoj Kumar; R. Kaul

doi:10.1117/12.377067

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7 February 2000 Development of high-power CO₂ lasers and laser material processing

Ashish Kumar Nath; Praveen Choudhary; Manoj Kumar; R. Kaul

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Proceedings Volume 3888, High-Power Lasers in Manufacturing; (2000) https://doi.org/10.1117/12.377067
Event: Advanced High-Power Lasers and Applications, 1999, Osaka, Japan

Abstract

Scaling laws to determine the physical dimensions of the active medium and optical resonator parameters for designing convective cooled CO₂ lasers have been established. High power CW CO₂ lasers upto 5 kW output power and a high repetition rate TEA CO₂ laser of 500 Hz and 500 W average power incorporated with a novel scheme for uniform UV pre- ionization have been developed for material processing applications. Technical viability of laser processing of several engineering components, for example laser surface hardening of fine teeth of files, laser welding of martensitic steel shroud and titanium alloy under-strap of turbine, laser cladding of Ni super-alloy with stellite for refurbishing turbine blades were established using these lasers. Laser alloying of pre-placed SiC coating on different types of aluminum alloy, commercially pure titanium and Ti-6Al-4V alloy, and laser curing of thermosetting powder coating have been also studied. Development of these lasers and results of some of the processing studies are briefly presented here.

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Ashish Kumar Nath, Praveen Choudhary, Manoj Kumar, and R. Kaul "Development of high-power CO₂ lasers and laser material processing", Proc. SPIE 3888, High-Power Lasers in Manufacturing, (7 February 2000); https://doi.org/10.1117/12.377067

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