УДК: 621.373

Aperture partitioning of a light beam in high-power installations for laser thermonuclear synthesis

Belkov, S.A., Voronich, I.N., Garanin, S.G., Zimalin, B.G., Rukavishnikov, N.N., Savkin, A.V., Sharov, O.A.

Publication in Journal of Optical Technology

For Russian citation (Opticheskii Zhurnal):

Бельков С.А., Воронич И.Н., Гаранин С.Г., Зималин Б.Г., Рукавишников Н.Н., Савкин А.В., Шаров О.А. Апертурное деление светового пучка в мощных установках для лазерного термоядерного синтеза // Оптический журнал. 2015. Т. 82. № 6. С. 14–24.

Belkov S.A., Voronich I.N., Garanin S.G., Zimalin B.G., Rukavishnikov N.N., Savkin A.V., Sharov O.A. Aperture partitioning of a light beam in high-power installations for laser thermonuclear synthesis [in Russian] // Opticheskii Zhurnal. 2015. V. 82. № 6. P. 14–24.

For citation (Journal of Optical Technology):

S. A. Bel’kov, I. N. Voronich, S. G. Garanin, B. G. Zimalin, N. N. Rukavishnikov, A. V. Savkin, and O. A. Sharov, "Aperture partitioning of a light beam in high-power installations for laser thermonuclear synthesis," Journal of Optical Technology. 82(6), 339-347 (2015). https://doi.org/10.1364/JOT.82.000339

Abstract:

A calculational and experimental study has been carried out for the spatial intensity profiles of laser beams formed at the output of an aperture-partitioning system using serrated apodizing stops with various types of serrated structures. Arrays of 2×2 and 1×2 beams with square and rectangular apertures are obtained, and it is experimentally shown that apodized beams can be formed with a high fill factor and an excess of the peak energy density relative to the mean value of no more than 1%.

Keywords:

beam spatial profile, aperture partitioning, rectangular aperture, apodization, serrated stop

OCIS codes: 110.1220, 110.6980, 140.3300

References:

1. P. J. Wisoff, M. W. Bowers, G. V. Erbert, D. F. Browning, and D. R. Jedlovec, “NIF injection laser system,” Proc. SPIE 5341, 146 (2004).
2. S. G. Garanin, A. I. Zaretskiı˘, R. I. Il’kaev, G. A. Kirillov, G. G. Kochemasov, R. F. Kurunov, V. M. Murugov, and S. A. Sukharev, “Channel of a high-power laser fusion ‘Luch’ facility emitting 3.3-kJ, and 4-ns pulses,” Kvant. Elektron. (Moscow) 35, 299 (2005) [Quantum Electron. 35, 299 (2005)].
3. J. Luce, “Beam shaping in the MegaJoule Laser Project,” Proc. SPIE 8130, 813002 (2011).

4. N. F. Borisova, M. A. Gavrilova, B. S. Guba, A. D. Starikov, and V. K. Él’ts, “Formation of a laser beam with a uniform spatial distribution,” Kvant. Elektron. (Moscow) 18, 355 (1991) [Sov. J. Quantum Electron. 21, 322 (1991)].
5. J. M. Auerbach and V. M. Karpenko, “Serrated-aperture apodizers for high-energy laser systems,” Appl. Opt. 33, 3179 (1994).
6. B. M. Van Wonterghem, J. T. Salmon, and R. W. Wilcox, “Beamlet pulse-generation and wavefront-control system,” Inertial Confinement Fusion 5, No. 1, 45 (1995).
7. S. A. Bel’kov, I. N. Voronich, S. G. Garanin, B. G. Zimalin, N. N. Rukavishnikov, A. V. Savkin, and O. A. Sharov, “Study of the apodization of a laser beam by serrated aperture stops for high-power installations for laser thermonuclear synthesis,” Opt. Zh. 82, No. 6, 3 (2015) [J. Opt. Technol. 82, 330 (2015)].
8. I. V. Epatko, A. A. Malyutin, R. V. Serov, D. A. Solov’ev, and A. D. Chulkin, “New algorithm for numerical simulation of the propagation of laser radiation,” Kvant. Elektron. (Moscow) 25, 717 (1998) [Quantum Electron. 28, 697 (1998)].