Concrete cutting using high-power fiber laser

Kazuyoku Tei; Nriyuki Takeuchi; Daichi Sugimoto; Takashi Arisawa; Kazuya Jyosui; Naoomi Miyagawa; Tomoo Fujioka

doi:10.1117/12.646364

23 February 2006 Concrete cutting using high-power fiber laser

Kazuyoku Tei, Nriyuki Takeuchi, Daichi Sugimoto, Takashi Arisawa, Kazuya Jyosui, Naoomi Miyagawa, Tomoo Fujioka

Proceedings Volume 6101, Laser Beam Control and Applications; 61011T (2006) https://doi.org/10.1117/12.646364
Event: Lasers and Applications in Science and Engineering, 2006, San Jose, California, United States

Abstract

We have demonstrated the measurements of attenuation constant of a multi-mode fiber (300μm core diameter and 1km length) at 1070nm. The observed attenuation constant was below 0.7dB/km. The laser power of 5kW was coupled into the 1km fiber at 1070nm. The overall transmittance was 85 %. We observed the first Raman stokes in the transmitted laser spectrum. We demonstrated concrete cutting with a 4kW fiber laser at 1070nm. The demonstrated slab thickness was 100mm. This technique can be extended to thick concrete slabs more than 1m without laser power increasing.

Citation Download Citation

Kazuyoku Tei, Nriyuki Takeuchi, Daichi Sugimoto, Takashi Arisawa, Kazuya Jyosui, Naoomi Miyagawa, and Tomoo Fujioka "Concrete cutting using high-power fiber laser", Proc. SPIE 6101, Laser Beam Control and Applications, 61011T (23 February 2006); https://doi.org/10.1117/12.646364

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