Staff
 
 
 
   

Ilya L’vovich Snetkov
scientific researcher

Education:
Undergraduate and graduate studies
Institution: N.I. Lobachevsky State University of Nizhny Novgorod,
Advanced School of General and Applied Physics (2001 – 2007)
Degree:               Bachelor of Sciences in Physics (2005)
Master of Sciences in Physics (2007)
Postgraduate study
Institution: Institute of Applied Physics of the Russian Academy of Sciences (2007 – 2011)

Scientific field of interests:
High-power lasers, solid-state lasers, near diffraction beam quality, thermally induced effects in crystals, glasses and ceramics, Faraday devises, interferometry

Professional carrier:
 Institute of Applied Physics of the Russian Academy of Sciences 2005 – up to present time
May 2008 – April 2009 SPIE Officer in Nizhny Novgorod Student Chapter (Treasurer)

Membership in professional organizations:
May 2009 – April 2010 SPIE Officer in Nizhny Novgorod Student Chapter (Secretary)
May 2010 – April 2011 SPIE Officer in Nizhny Novgorod Student Chapter (Vice-President)
May 2009 – April 2010 OSA Officer in Institute of Applied Physics of Russian Academy of Sciences (RAS) Student Chapter (Treasurer)
May 2010 – April 2011 OSA Officer in Institute of Applied Physics of Russian Academy of Sciences (RAS) Student Chapter (Treasurer)

Awards, prizes, grants:
Scholarship named after Academician G.A. Razuvaeva (2009-2010)
The Medal of the Russian Academy of Sciences for young scientists of the Russian Academy of Sciences (2014)

Pedagogical activities:
 Scientific adviser at the School of Young Researchers (2009-2012)

Publications:

  1.  I. L. Snetkov, I. B. Mukhin, O. V. Palashov, and E. A. Khazanov, "Properties of a thermal lens in laser ceramics," Quantum. Electron. 37, 633-638 (2007).
  2. A.A. Soloviev, I.L. Snetkov, V.V. Zelenogorsky, I.E. Kozhevatov, O. Palashov, E.A. Khazanov. “Experimental study of thermal lens features in laser ceramics,” Optics Express Vol. 16, Iss. 25, pp. 21012-21021 (2008)
  3. I. L. Snetkov, A. A. Soloviev, and E. A. Khazanov, "Study of a thermal lens in thin laser-ceramics discs," Study of a thermal lens in thin laser-ceramics discs 39, 302-308 (2009).
  4. Ilya Snetkov, Ivan Mukhin, Oleg Palashov, and Efim Khazanov “Compensation of thermally induced depolarization in Faraday isolators for high average power lasers,” Optics Express Vol. 19, Iss. 7, pp. 6366–6376 (2011)
  5. Ilya Snetkov, Anton Vyatkin, Oleg Palashov, and Efim Khazanov “Drastic reduction of thermally induced depolarization in CaF2 crystals with [111] orientation,” Optics Express, Vol. 20, Issue 12, pp. 13357-13367 (2012)
  6. Ilya Snetkov, Oleg Palashov “Compensation of thermal effects in Faraday isolator for high average power lasers,” Applied Physics B, Volume 109, Issue 2, pp. 239-247 (2012)
  7. E. A. Mironov, I. L. Snetkov, A. V. Voitovich, and O. V. Palashov, "Permanent-magnet Faraday isolator with the field intensity of 25 kOe," Quantum Electron. 43, 740-743 (2013).
  8. I. L. Snetkov, D. E. Silin, O. V. Palashov, E. A. Khazanov, H. Yagi, T. Yanagitani, H. Yoneda, A. Shirakawa, K.-i. Ueda, and A. A. Kaminskii, “Study of the thermo-optical constants of Yb doped Y2O3, Lu2O3 and Sc2O3 ceramic materials,” Opt. Express Vol. 21, Issue 18, pp. 21254-21263 (2013).
  9. A. G. Vyatkin, I. L. Snetkov, O. V. Palashov, and E. A. Khazanov, “Self-compensation of thermally induced depolarization in CaF2 and definite cubic single crystals,” Opt. Express Vol. 21, Issue 19, pp.22338-22352 (2013).
  10. I. L. Snetkov, A. V. Voitovich, O. V. Palashov, and E. A. Khazanov, Review of Faraday Isolators for Kilowatt Average Power Lasers, IEEE J. Quantum Elect. vol. 50, issue 6, pp. 434-443, 2014.
  11. R. Yasuhara, I. Snetkov, A. Starobor, and O. Palashov, Terbium gallium garnet ceramic-based Faraday isolator with compensation of thermally induced depolarization for high-energy pulsed lasers with kilowatt average power, Appl. Phys. Lett. 105, pp. 241104, (2014)
  12. I. L. Snetkov, I. B. Mukhin, S. S. Balabanov, D. A. Permin, and O. V. Palashov, "Efficient  lasing in  Yb:(YLa)2O3 ceramics," Quantum Electron. 45, (2015) pp. 95-97.
  13. I. Snetkov and O. Palashov, Faraday isolator based on a TSAG single crystal with compensation of thermally induced depolarization inside magnetic field, Opt. Mater. vol. 42, pp. 293-297, (2015)
  14. A. Starobor, R. Yasyhara, I. Snetkov, E. Mironov, and O. Palashov, TSAG-based cryogenic Faraday isolator, Opt. Mater. 47, 112-117 (2015).
  15. I. L. Snetkov, R. Yasuhara, A. V. Starobor, E. A. Mironov, and O. V. Palashov, Thermo-Optical and Magneto-Optical Characteristics of Terbium Scandium Aluminum Garnet Crystals, IEEE Quantum Electron. Vol. 51, number 7, 7000307-1– 7000307-7, (2015).
  16. M. Ivanov, Y. Kopylov, V. Kravchenko, J. Li, Y. Pan, U. Kynast, M. Leznina, W. Strek, L. Marciniak, O. Palashov, I. Snetkov, I. Mukhin, and D. Spassky, Optical, luminescent and laser properties of highly transparent ytterbium doped yttrium lanthanum oxide ceramics, Opt. Mater. vol. 50, Part A, pp. 15–20, (2015).
  17. I. L. Snetkov, A. I. Yakovlev and O. V. Palashov CaF2, BaF2 and SrF2 crystals' optical anisotropy parameters, Laser Phys. Lett., Vol.12, Num. 9, p. 095001, (2015)
  18. I. L. Snetkov, I. B. Mukhin, and O. V. Palashov, "Comparative characteristics of Yb:(YLa)2O3 laser ceramics," Quantum Electron. 46, (2016) pp. 193-196.
  19. I.L. Snetkov, D.A. Permin, S.S. Balabanov, and O.V. Palashov Wavelength dependence of Verdet constant of Tb3+:Y2O3 ceramics, Appl. Phys. Lett. vol. 108, p. 161905, 2016
  20. Ilya L. Snetkov, Vitaly V. Dorofeev, Oleg V. Palashov The effect of full compensation of thermally induced depolarization in two nonidentical laser elements, Opt. Lett., 41(10) p. 2374-2377 (2016)
  21. Ryo Yasuhara, Ilya Snetkov, Aleksey Starobor, Еvgeniy Mironov, and Oleg Palashov Faraday rotator based on TSAG crystal with <001> orientation, Opt.Exp. Vol. 24, Issue 14, pp. 15486-15493, (2016)

Most significant results:
Developed a model of thermal effects in laser ceramics, taking into account random nature of crystallographic axes orientation in the grains. Analytical equations for thermally induced phase, its average value and dispersion are derived. Predicted an effect of beam phase modulation with characteristic transverse scale of about grain size. Beam quality reduction induced by this effect is inverse proportional to ratio of ceramics sample length to grain size. The effect of small-scale modulation of thermally induced phase distortions in laser ceramics was demonstrated on an example of CaF2 ceramics.

Studied methods of compensation of thermally induced birefringence in optical elements and proposed a new scheme of thermally induced depolarization compensation in Faraday isolators. In contrast to the currently used scheme the proposed scheme allows compensating depolarization, leaving the magnetic system and the magnetooptical element of the Faraday rotator unchanged.
A simple method for measuring the stress-optic anisotropy ratio (including its sign) in cubic crystals with symmetry 432,43m and m3m was proposed and verified in CaF2 and TGG crystals. In crystals with a negative value of this parameter thermally induced depolarization may be reduced significantly by choosing crystal orientation and such crystal may be used in thermally induced depolarization compensation scheme without reciprocal rotator or retarders.