Laser rods characterization by Fourier transform phase-shifting interferometry

O. Matoušek; F. Procháska; J. Kredba

doi:10.1117/12.2547487

30 December 2019 Laser rods characterization by Fourier transform phase-shifting interferometry

O. Matoušek, F. Procháska, J. Kredba

Proceedings Volume 11385, Optics and Measurement International Conference 2019; 113850C (2019) https://doi.org/10.1117/12.2547487
Event: Optics and Measurement 2019 International Conference, 2019, Liberec, Czech Republic

Abstract

Solid-state lasers are broadly used in various applications. The most common gain medium is neodymium-doped yttrium aluminum garnet (Nd:YAG). Very important parameters are angle between polished face surfaces and result wave-front deformation. These parameters are usually measured with two different methods. The paper presents a procedure for measurements of the parameters in a single measurement sequence using Fourier transform phase-shifting interferometry. The results are figures of both optical surfaces, and their mutual position, wave-front deformation, and homogeneity of refractive index. Based on the knowledge of these parameters can be done precise correction of resulted wave-front and of the wedge by polishing of face surfaces. The presented method reduces manipulation with the elements is non-sensitive to the operator and allows more precise wavefront correction thanks to the knowledge of inhomogeneity of material.

Citation Download Citation

O. Matoušek, F. Procháska, and J. Kredba "Laser rods characterization by Fourier transform phase-shifting interferometry", Proc. SPIE 11385, Optics and Measurement International Conference 2019, 113850C (30 December 2019); https://doi.org/10.1117/12.2547487

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