Beam shaping optics for YAG laser by using a CNC lathe

Ryoichi Kuwano; Tsuyoshi Tokunaga; Yoshihiro Kataoka; Yukitoshi Otani; Toshiyuki Miyazaki

doi:10.1117/12.516270

30 September 2003 Beam shaping optics for YAG laser by using a CNC lathe

Ryoichi Kuwano, Tsuyoshi Tokunaga, Yoshihiro Kataoka, Yukitoshi Otani, Toshiyuki Miyazaki

Proceedings Volume 5264, Optomechatronic Systems IV; (2003) https://doi.org/10.1117/12.516270
Event: Photonics Technologies for Robotics, Automation, and Manufacturing, 2003, Providence, RI, United States

Abstract

A method for a beam shaping optics is proposed to convert a laser beam profile into required intensity distribution. A beam shaper with aspherical surface is calculated by Snell's law converted from measured irradiate beam profile to required profile. An acrylic resin is cut by a ball type grinding wheel consisted on diamond powder and polished by a cone type felt buff with alumina ceramics powder. A CNC lathe is used to control these tools position. A shaper with 4mm of thickness works to convert multi-mode beam profile with 13mm of diameter into a flat top cylinder with 1mm of diameter. Its working distance is 60mm. Its transmittance is over 98%.It suceed to generate uniform melting mark of 0.6mm diameter on the steel target by YAG laser process.

Citation Download Citation

Ryoichi Kuwano, Tsuyoshi Tokunaga, Yoshihiro Kataoka, Yukitoshi Otani, and Toshiyuki Miyazaki "Beam shaping optics for YAG laser by using a CNC lathe", Proc. SPIE 5264, Optomechatronic Systems IV, (30 September 2003); https://doi.org/10.1117/12.516270

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