Abstract

Effects of small misalignments in positive- and negative-branch strip confocal unstable resonators have been compared at the same absolute values of collimated Fresnel numbers and at the same Fresnel numbers. We show that positions of beam modes in negative-branch unstable resonators are far less sensitive to misalignment because of both geometric features and diffraction effects of beam flipping in the resonators.

© 2001 Optical Society of America

Modified negative-branch confocal unstable resonator

Thomas Hall, Frank Duschek, Karin M. Grünewald, and Jürgen Handke
Appl. Opt. 45(34) 8777-8780 (2006)

Negative-branch unstable resonator Nd:YAG laser

T. F. Ewanizky and J. M. Craig
Appl. Opt. 15(6) 1465-1469 (1976)

Transverse mode formation in low-magnification positive-branch unstable resonators

R. William Jones and James F. Perkins
Appl. Opt. 23(9) 1361-1368 (1984)

COIL emission of a modified negative branch confocal unstable resonator

Carsten Pargmann, Thomas Hall, Frank Duschek, Karin Maria Grünewald, and Jürgen Handke
Appl. Opt. 46(31) 7751-7756 (2007)

Iterative Diffraction Calculations of Transverse Mode Distributions in Confocal Unstable Laser Resonators

David B. Rensch and Arthur N. Chester
Appl. Opt. 12(5) 997-1010 (1973)