Results
Title

Fabrication of λ/2 phase step mirror for CO<sub>2</sub> laser resonator using diamond turning.

Authors

Mishra, Vinod; Biswas, Abhik Kumar; Kumar, Neeraj; Kukreja, Lalit Mohan; Vizia Sarepaka, Ramagopal

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.

Subjects

LASER cavity resonators; DIAMOND turning; CAVITY resonators; OPTICAL resonators; GLASS grinding & polishing

Publication

Optical Engineering, 2014, Vol 53, Issue 3, p1

ISSN

0091-3286

Publication type

Academic Journal

DOI

10.1117/1.OE.53.3.036107