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  • Conference on Lasers and Electro-Optics
  • OSA Technical Digest (Optica Publishing Group, 1992),
  • paper CTuE4

High-power Nd:YAG slab laser with unstable resonators

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Abstract

It is well known that in slab lasers thermal lensing is compensated by zigzag beam propagation in the x- and thermal insulation in the y-direction, Unfortunately, a small negative refractive power remains in the y-direction due to inhomogenuous pumping and cooling. It is for this reason that the beam quality is either extremely poor or strongly dependent on pump power when stable resonators are used. Constant beam quality near the diffraction limit can only be achieved by using unstable resonator schemes.

© 1992 Optical Society of America

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