Fabrication of λ/2 phase step mirror for CO2 laser resonator using diamond turning

Vinod Mishra; Abhik K. Biswas; Neeraj Kumar; Lalit M. Kukreja; Ramagopal V. Sarepaka

doi:10.1117/1.OE.53.3.036107

21 March 2014 Fabrication of λ/2 phase step mirror for CO2 laser resonator using diamond turning

Vinod Mishra, Abhik K. Biswas, Neeraj Kumar, Lalit M. Kukreja, Ramagopal V. Sarepaka

Author Affiliations +

Optical Engineering, Vol. 53, Issue 3, 036107 (March 2014). https://doi.org/10.1117/1.OE.53.3.036107

Abstract

A stable optical resonator comprising a spherical rear mirror with a phase step of λ/2 at its center and a flat output coupler promises to produce a beam with very low diffraction. Based on this premise, a phase step mirror is fabricated on oxygen-free high-conductivity copper substrate using single-point diamond turning method for use in kilowatt-class CO2 laser. The fabrication technique and subsequent metrology measurements of the optical component, e.g., surface profile error and surface finish, are discussed.

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Vinod Mishra, Abhik K. Biswas, Neeraj Kumar, Lalit M. Kukreja, and Ramagopal V. Sarepaka "Fabrication of λ/2 phase step mirror for CO2 laser resonator using diamond turning," Optical Engineering 53(3), 036107 (21 March 2014). https://doi.org/10.1117/1.OE.53.3.036107

Published: 21 March 2014

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