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M. V. Rogozhin, V. E. Rogalin, M. I. Krymskii, I. A. Kaplunov

ON THE POSSIBILITY OF INCREASING THE SERVICE LIFE OF HIGH-POWER LASER OPTICS THROUGH THE USE OF POLYCRYSTALLINE DIAMOND WINDOWS WITH A CENTRAL MONOCRYSTALLINE AREA

DOI: 10.17804/2410-9908.2018.1.034-040

For high-power CO2 lasers operating at 10-µm wavelength there is a serious deficiency of transparent materials. Only expensive semiconductor and dielectric materials with poor mechanical and thermal characteristics are transparent in this spectral region. The construction of an output high-power laser window made of polycrystalline diamond with a single-crystalline central region is considered. Numerical modeling of an optical damage threshold is performed. The results are compared with those for a conventionally designed polycrystalline diamond window. An increase in maximum allowed output radiation power due to the use of a composite window is demonstrated.

Keywords: high power CO2-laser, output window, polycrystalline diamond, single-crystal diamond, optical damage

References:

1. Rogalin V.E. Transparent materials for high-power pulsed CO2-lasers // Izvestiya VUZov. Materialy elektronnoy tekhniki, 2013, no. 2, pp. 11–18. (In Russian).

2.Rogalin V.E., Aranchiy S.A. Polycrystalline diamonds – new prospects for power optics and electronics. Integral, 2012, no. 5 (67), pp. 7–9. (In Russian).

3.Rogalin V.E., Ashkenazi E.E., Popovich A.F., Ral’chenko V.G., Konov V.I., Aranchii S.M., Ruzin M.V., Uspenskii S.A. Resistance of diamond optics to high-power fiber laser radiation. Russian Microelectronics, 2012, vol. 41, no. 8, pp. 464–468. DOI: 10.1134/S106373971208015X.

4.Kaminskii A.A., Hemley R.J., Lai J., Yan C.S., Mao H.K., Ralchenko V.G.,. Eichler H.J, Rhee H. High-order stimulated Raman scattering in CVD single crystal diamond. Laser Phys. Lett., 2007, vol. 4, iss. 5, pp. 350–353. DOI: 10.1002/lapl.200610127.

5.Friel. I., Geoghegan S.L., Twitchen D.J., Scarsbrook G.A. Development of high quality single crystal diamond for novel laser applications. In: Proc. SPIE 7838: Optics and Photonics for Counterterrorism and Crime Fighting VI and Optical Materials in Defense Systems Technology VII, 2010, 783819.

6.Webster S., Chen Y., Turri G., Bennett A., Wickham B., Bass M. Intrinsic and extrinsic absorption of chemical vapor deposition single-crystal diamond from the middle  ultraviolet to the far infrared. J. Opt. Soc. Am. B., 2015, vol. 32, no. 3, pp. 479–484. DOI: 10.1364/JOSAB.32.000479.

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8.Bogachev A.V., Garanin S.G., Dudov A.M., Eroshenko V.A., Kulikov S.M., Mikaelyan G.T., Panarin V.A., Pautov V.O., Rus A.V., Sukharev S.A. Diode-pumped caesium vapour laser with closed-cycle laser-active medium circulation. Quantum Electronics, 2012, vol. 42, no. 2, pp. 95–98. DOI: 10.1070/QE2012v042n02ABEH014734.

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12.Rogozhin M.V., Krimsky M.I., Rogalin V.E., Filin S.A. Modeling the thermomechanical processes in the output window of a high-power СО2 laser. Bulletin of the Russian Academy of Sciences: Physics, 2016, vol. 80, no. 10, pp. 1260–1266. DOI: 10.3103/S1062873816100166.

13.Rogozhin M.V., Rogalin V.E. and Krymskii M.I. Thermooptical processes in the window of a high-power gas laser. Optics and Spectroscopy, 2017, vol. 122, no. 5, pp. 843–849. DOI: 10.1134/S0030400X17050186.

14.Rogozhin M.V., Rogalin V.E., Krymskij M.I., Filin S.A., Rogalina N.A. High-power laser. RF Patent 2608309. (In Russian).


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Article reference

On the Possibility of Increasing the Service Life of High-Power Laser Optics Through the Use of Polycrystalline Diamond Windows with a Central Monocrystalline Area / M. V. Rogozhin, V. E. Rogalin, M. I. Krymskii, I. A. Kaplunov // Diagnostics, Resource and Mechanics of materials and structures. - 2018. - Iss. 1. - P. 34-40. -
DOI: 10.17804/2410-9908.2018.1.034-040. -
URL: http://eng.dream-journal.org/issues/2018-1/2018-1_132.html
(accessed: 05/22/2024).

 

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