Fracture Mechanisms and Strengthening of Slab Lasers

John E. Marion

doi:10.1117/12.938059

6 April 1987 Fracture Mechanisms and Strengthening of Slab Lasers

John E. Marion

Proceedings Volume 0736, New Slab and Solid-State Laser Technologies and Applications; (1987) https://doi.org/10.1117/12.938059
Event: OE LASE'87 and EO Imaging Symposium, 1987, Los Angeles, CA, United States

Abstract

The fracture mechanisms of slab lasers are examined and the critical defects, induced during optical fabrication, are identified. A rationale for determining an appropriate operating stress for the slab laser is outlined, based on Weibull statistics, and this method is experimentally assessed in full-sized slab fracture tests. Techniques for achieving strong slabs are then examined. We determine that strengthening by subsurface damage minimization has the highest potential for strengthening, but that slab durability must also be enhanced in order for the slab to remain strong in practice. Good chemical durability is achieved by the use of water-proof overcoats. Good mechanical durability is achieved by the use of compressive surface layers. The compressive surface layers prevent the deterioration in slab strength from physical damage to the slab surface.

Citation Download Citation

John E. Marion "Fracture Mechanisms and Strengthening of Slab Lasers", Proc. SPIE 0736, New Slab and Solid-State Laser Technologies and Applications, (6 April 1987); https://doi.org/10.1117/12.938059

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