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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Glenn D. Boreman
  • Vol. 44, Iss. 36 — Dec. 20, 2005
  • pp: 7823–7827

Correction of spherical and azimuthal aberrations in radially polarized beams from strongly pumped laser rods

Inon Moshe, Steven Jackel, and Avi Meir  »View Author Affiliations


Applied Optics, Vol. 44, Issue 36, pp. 7823-7827 (2005)
http://dx.doi.org/10.1364/AO.44.007823


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Abstract

Spherical aberration of heavily pumped Nd:YAG rods was corrected by use of spherical relay optics selected to add conjugate amounts of aberration. Wavefront measurements showed elimination of spherical aberration. Correction of spherical aberration allowed 250 W of power to be generated in a radially polarized, birefringence-free oscillator (60% more power than without correction). Scale-up of wavefront maintenance was demonstrated in a two-rod amplifier module (6.3 kW electrical pump power). Radial polarization and spherical aberration correction together eliminated the main aberrations in uniformly pumped rod-based lasers. Rotating adjacent pump chambers substantially reduced the multifold aberrations induced by nonuniformity of the azimuthal pumps. ΔM2 in the radially polarized beam was 0.3 and 1.4 with and without aberration correction, respectively, in each two-pump chamber module. Analysis predicts further improvements when higher-order aberration correction is applied.

© 2005 Optical Society of America

OCIS Codes
(140.3580) Lasers and laser optics : Lasers, solid-state
(140.6810) Lasers and laser optics : Thermal effects
(220.1000) Optical design and fabrication : Aberration compensation

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: May 23, 2005
Manuscript Accepted: June 24, 2005
Published: December 20, 2005

Citation
Inon Moshe, Steven Jackel, and Avi Meir, "Correction of spherical and azimuthal aberrations in radially polarized beams from strongly pumped laser rods," Appl. Opt. 44, 7823-7827 (2005)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-44-36-7823

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