Synthesis of diamond diffractive optical elements for IR laser beam focusing

V. S. Pavelyev; V. A. Soifer; N. L. Kazanskiy; A. V. Volkov; G. F. Kostyuk; V. V. Kononenko; V. I. Konov; S. M. Pimenov; M. S. Komlenok; M. Duparré; B. Luedge; M. Berger

doi:10.1117/12.623753

20 October 2005 Synthesis of diamond diffractive optical elements for IR laser beam focusing

V. S. Pavelyev, V. A. Soifer, N. L. Kazanskiy, A. V. Volkov, G. F. Kostyuk, V. V. Kononenko, V. I. Konov, S. M. Pimenov, M. S. Komlenok, M. Duparré, B. Luedge, M. Berger

Author Affiliations +

Proceedings Volume 5965, Optical Fabrication, Testing, and Metrology II; 59650M (2005) https://doi.org/10.1117/12.623753
Event: Optical Systems Design 2005, 2005, Jena, Germany

Abstract

The fabrication of diamond-based optical elements for high-power CO₂ lasers is of particular interest because of the low optical absorption coefficient of this material in combination with it's very high thermal conductivity and the weak temperature dependence of refractive index¹. Recent advances in gas-phase synthesis have made it possible to fabricate polycrystalline CVD diamond films (DF) whose optical and thermal properties are close to those of single crystal diamond material, whereas they are far cheaper. As a result, these sophisticated materials are applied more and more to tasks dominated till now by other materials. Such examples for this are windows for high-power CO₂ lasers in the 5 - 20 kW domain¹ and beam-splitters². Recently new techniques have been proposed for antireflective structuring of DF surface^3,4 as well as for generation of phase microrelief to manufacture diamond diffractive optical elements (DOEs) for the far IR range^5-8. The realisation of DOE by UV-laser ablation has been considered^5-8. Using of ion-chemical etching and plasmochemical-etching⁹ is considered later¹⁰. The present paper is devoted to further development of considered approaches^5,9. The realization of diamond diffractive optical elements (DOEs) is considered, able to focus an incoming CO₂ laser beam into certain pregiven focal domains. Results of experimental investigation of designed DOEs are presented and discussed.

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V. S. Pavelyev, V. A. Soifer, N. L. Kazanskiy, A. V. Volkov, G. F. Kostyuk, V. V. Kononenko, V. I. Konov, S. M. Pimenov, M. S. Komlenok, M. Duparré, B. Luedge, and M. Berger "Synthesis of diamond diffractive optical elements for IR laser beam focusing", Proc. SPIE 5965, Optical Fabrication, Testing, and Metrology II, 59650M (20 October 2005); https://doi.org/10.1117/12.623753

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