Laser strength multilayer interference coatings with the Gaussian profile for Nd:YAG lasers

E. V. Kuznetsov; V. V. Novopashin; A. V. Shestakov

doi:10.1117/12.2526278

30 August 2019 Laser strength multilayer interference coatings with the Gaussian profile for Nd:YAG lasers

E. V. Kuznetsov, V. V. Novopashin, A. V. Shestakov

Proceedings Volume 11104, Current Developments in Lens Design and Optical Engineering XX; 111040N (2019) https://doi.org/10.1117/12.2526278
Event: SPIE Optical Engineering + Applications, 2019, San Diego, California, United States

Abstract

The development of laser technologies defined the novel quality demands to optical interference coatings. For many technological applications is very important to use lasers with equal distribution of laser intensity across the beam. Gradient mirrors is one of the most simple and convenient means to manage spatial distribution of laser radiation, and can be used in various lasers and laser devices. These mirrors are used as output coupler in the laser cavity to form radiation close to the Gaussian distribution which using radially varying thickness that have been proved the most practical. Multilayer dielectric mirrors with a smooth changing reflection are used in various types of laser resonators. However, in practice, not equal distributions take place especially for Q-switch lasers. It can be arise due to as mode structure of laser irradiation, as optical defects of rod. So, application of such mirrors, permit realize the selection of transverse modes in which the minimal losses possess the transverse mode with amplitude distribution close to distribution of mirror reflection. This paper presents the methodology of fabricating multilayer dielectric mirror with altering over surface parameters of reflectance.

Citation Download Citation

E. V. Kuznetsov, V. V. Novopashin, and A. V. Shestakov "Laser strength multilayer interference coatings with the Gaussian profile for Nd:YAG lasers", Proc. SPIE 11104, Current Developments in Lens Design and Optical Engineering XX, 111040N (30 August 2019); https://doi.org/10.1117/12.2526278

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