ITMO University Saint Petersburg National Research University of Information Technologies, Mechanics and Optics

Andrei V. Ivanov

Andrei V. Ivanov

Ph.D.

Position:

Head of the Department of Optical Physics and Modern Natural Science, Associate professor

Education

Physicist (Optics)

St. Petersburg State Institute of Fine Mechanics and Optics (now ITMO University)
Thesis:
Multiphoton transitions in quantum-sized structures

Ph.D. in Physics (Optics)

ITMO University
Thesis:
Multiphoton absorption and photon avalanche effect crystals and nanostructures

Experiences

2006 − present: National Research University of Information Technologies, Mechanics and Optics, St-Petersburg (ITMO University)

It was proposed the multiband pattern of the multiphoton avalanche effect that leads to the nonlinear generation of free carriers in the crystals in the picosecond’s time scale. Results of computer simulation of kinetic processes participated in the effect show that multiphoton avalanche is more efficient mechanism of generation of free carriers than routine multiphoton transitions. Also I have calculated the probabilities of multiphoton transitions in three band crystal in double resonance conditions. The existence of double resonance caused by the optical Stark effect leads to the appearance of new critical points in the density of states. Performed calculations show that the probabilities of multiphoton transitions in such conditions increase for some orders of magnitude contrary to the single multiphoton resonance.

2001 − 2006 Vavilov State Optical Institute, St. Petersburg

In the theoretical group of Prof. Eugene Perlin I have performed the calculation of the probabilities of Auger-type transitions in the quantum well systems and indirect bandgap semiconductors. Such transitions assisted by photon or not play substantial role in the origin of the photon avalanche effect. The computer simulation of avalanche process has occurred by solving of system nonlinear differential equations for carrier’s concentrations for energetic bands.

Research interests

Research activity revolves around the theoretical investigation of nonlinear optical effects in the crystals viz to multiphoton transitions in the bulk and on the surface of the semiconductors of different dimensions; pre-breakdown generation of free carriers in the insulators and semiconductors caused by the ultra short pulse laser radiation; photon avalanche effect in the semiconductors and heterostructures, and dynamical Stark effect. My research interest involves the theoretical investigation of laser cooling of solids, namely doped crystal systems and semiconductor materials.

  1. D. A. Vakulin, A. V. Ivanov. Simulation of frequency dependence of dielectric susceptibility for description of director reorientation dynamics of nematic LC. Journal of Physics: Conference Series, 633 012078 (2015)
  2. E. Yu. Perlin, R. S. Levitskii, A. V. Ivanov, K. A. Eliseev. Nonlinear optical absorption in crystals with deep impurities: II. Band–impurity phototransitions involving free electrons. Optics and Spectroscopy, 119(2) 216-220 (2015)
  3. E. Yu. Perlin, R. S. Levitskii, A. V. Ivanov, K. A. Eliseev. Nonlinear optical absorption in crystals with deep impurities: I. Probabilities of two-center phototransitions between band and impurity states. Optics and Spectroscopy, 118(2) 229-234 (2015)
  4. A. V. Ivanov, D. A. Vakulin. Simulation of a symmetric optical response from a hybrid-aligned structure of a dual-frequency nematic liquid crystal. Optics and Spectroscopy, 119(6) 1015-1021 (2015)
  5. Andrei V. Ivanov, Yurii V. Rozhdestvensky. Laser cooling of doped crystals by methods of coherent pumping. Proceedings of SPIE, 9380 93800S (2015)
  6. Andrei Ivanov, Yuriy Rozhdestvensky, Evgeniy Perlin. Vibronic model of laser cooling with stimulated Raman adiabatic passage pumping for Yb^3+-ion-doped crystals. Journal of the Optical Society of America B, 33(8) 1564 (2016)
  7. Andrei Ivanov, Yuriy Rozhdestvensky, Evgeniy Perlin. Minimization of temperature for laser cooling . Applied Optics, 55(28) 7764-7770 (2016)
  8. Yu. Rozhdestvenky, A. Ivanov, E. Perlin. Coherent pumping for fast laser cooling of doped crystals . Journal of the Optical Society of America B, 32(5) B47-B54 (2015)
  9. M. A. Bondarev, E. Yu. Perlin, A. V. Ivanov. Multiphoton absorption controlled by the resonance optical Stark effect in crystals. Optics and Spectroscopy, 115(6) 828-838 (2013)
  10. E. Yu. Perlin, A. V. Ivanov, A. A. Popov. Interband phototransitions involving free electrons: III. Transmission of light through crystals. Optics and Spectroscopy, 115(5) 739-744 (2013)
  11. E. Yu. Perlin, A. V. Ivanov, A. A. Popov. Interband phototransitions involving free electrons: Part II. Crystals with an indirect band gap. Optics and Spectroscopy, 113(4) 383-387 (2012)
  12. E. Yu. Perlin, A. V. Ivanov, A. A. Popov. Interband phototransitions involving free electrons: I. Crystals with a direct band gap. Optics and Spectroscopy, 113(4) 376-382 (2012)
  13. M. A. Bondarev, A. V. Ivanov, E. Yu. Perlin. Prebreakdown excitation of crystals at double multiphoton resonance: III. Forbidden transitions. Optics and Spectroscopy, 112(1) 106-113 (2012)
  14. A. V. Ivanov, E. Yu. Perlin . Prebreakdown Excitation of Crystals at Double Multiphoton Resonance: I. Probabilities of Interband Transitions. Optics and spectroscopy, 106(5) 677–684 (2009)
  15. A. V. Ivanov, E. Yu. Perlin . Prebreakdown Excitation of Crystals at Double Multiphoton Resonance: II. Analysis of the Effects of Transformation of Electronic Band Spectrum. Optics and spectroscopy, 106(5) 685–690 (2009)
  16. A. V. Ivanov, R. S. Levitskiĭ, E. Yu. Perlin . Multiphoton Avalanche Generation of Free Carriers in a Multiband Crystal. Optics and Spectroscopy, 107(2) 255–263 (2009)
  17. A. V. Ivanov, D. A. Vakulin, E. A. Konshina. Symmetrical optical response in the hybrid-oriented twist structure of a dual-frequency nematic liquid crystal. Journal of Optical Technology, 81(3) 130-134 (2014)
  18. A. V. Ivanov, E. Yu. Perlin. Multiphoton generation of electron-hole pairs involving free carriers in an indirect-gap crystal. Optics and Spectroscopy, 102(2) 227-232 (2007)
  19. A. V. Ivanov, R. S. Levitskiĭ, E. Yu. Perlin, D. I. Stasel’ko. Interband phototransitions in AgBr nanocrystals assisted by free carriers. Optics and Spectroscopy, 103(5) 777-782 (2007)