Theoretical model of new beam quality paradigm for high-power laser optics

James R. Palmer

doi:10.1117/12.148396

7 August 1993 Theoretical model of new beam quality paradigm for high-power laser optics

James R. Palmer

Proceedings Volume 1869, Intracavity and Extracavity Control of Laser Beam Properties; (1993) https://doi.org/10.1117/12.148396
Event: OE/LASE'93: Optics, Electro-Optics, and Laser Applications in Scienceand Engineering, 1993, Los Angeles, CA, United States

Abstract

In this paper we describe a different mathematical technique which derives from the MTF of a system. This technique evaluates the loss of flux density in the central lobe of the Airy Disc caused by aberration of the diffraction image caused by the mode shape of the laser cavity, the thermal-mechanical distortion of the optical components in the high power laser beam train and ultimately the focusing optical components. The theoretical model, which we call Central Lobe Energy Distribution Technique, provides the equations for evaluating optical distortion caused by the absorbed thermal flux density on the mirrors, the mechanical bowing and subsequent distortion of the mounting configuration and the criteria for sizing the optical components in relation to the laser beam diameter. A comparison is made for both the Strehl criteria and for the M² technique, showing examples.

Citation Download Citation

James R. Palmer "Theoretical model of new beam quality paradigm for high-power laser optics", Proc. SPIE 1869, Intracavity and Extracavity Control of Laser Beam Properties, (7 August 1993); https://doi.org/10.1117/12.148396

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