Share Email Print

Proceedings Paper

Development of an optical resonator with conical retroreflector for generation of radially polarized optical beam
Author(s): Masamori Endo
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

Optical resonator for generation of high-power radially polarized beam is presented. In laser cutting applications, radially polarized beam is advantageous because the beam contacts the cut front always with the highly absorptive p-polarization. The proposed resonator comprises a reflector unit that has three conical faces with polarization sensitive dielectric coating, and an ordinary output coupler. The resonator is compatible with any existing circular mirror standing-wave optical resonators. Numerical simulation shows good polarization selectivity with only 1% of reflectivity difference between p and s polarizations, and M2 factor of the output beam is 1.9. No output power degradation is seen compared to the standard spherical mirror resonator. Design and fabrication of the resonator for a 1kW-class commercial cw CO2 laser is discussed.

Paper Details

Date Published: 7 February 2008
PDF: 10 pages
Proc. SPIE 6872, Laser Resonators and Beam Control X, 687207 (7 February 2008); doi: 10.1117/12.760570
Show Author Affiliations
Masamori Endo, Tokai Univ. (Japan)

Published in SPIE Proceedings Vol. 6872:
Laser Resonators and Beam Control X
Alexis V. Kudryashov; Alan H. Paxton; Vladimir S. Ilchenko, Editor(s)

© SPIE. Terms of Use
Back to Top