Synthesis and investigation of diamond diffractive optical elements

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

doi:10.1117/12.682129

31 August 2006 Synthesis and investigation of diamond diffractive optical elements

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

Author Affiliations +

Proceedings Volume 6290, Laser Beam Shaping VII; 62900B (2006) https://doi.org/10.1117/12.682129
Event: SPIE Optics + Photonics, 2006, San Diego, California, United States

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 its very high thermal conductivity and the weak temperature dependence of refractive index. 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, 10}. The realisation of DOE by UV-laser ablation has been considered ^5-8. Using of ion-chemical etching⁹ and plasma etching10 is considered later. 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, D. L. Golovashkin, A. V. Volkov, G. F. Kostyuk, V. V. Kononenko, V. I. Konov, S. M. Pimenov, M. S. Komlenok, M. R. Duparré, and B. Luedge "Synthesis and investigation of diamond diffractive optical elements", Proc. SPIE 6290, Laser Beam Shaping VII, 62900B (31 August 2006); https://doi.org/10.1117/12.682129

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