Nickolai Kukhtarev - Profile on Academia.edu (original) (raw)
Papers by Nickolai Kukhtarev
Energy exchange between optical waves due to self-diffraction by photorefractive gratings in a CdTe crystal
Soviet Journal of Quantum Electronics, 1990
Theoretical and experimental investigations were made of a photorefractive nonlinearity of CdTe s... more Theoretical and experimental investigations were made of a photorefractive nonlinearity of CdTe semiconductor crystals. Photorefractive gratings were formed in undoped CdTe and used to provide efficient energy exchange between nanosecond pulsed light beams (lambda approx 1.06 mum) characterized by an exchange gain of ~ 0.13 cm - 1. Bibtex entry for this abstract Preferred format for this abstract (see Preferences)
Critical phenomena in self-diffraction gyration of laser beams in electrooptic crystals
Soviet Journal of Quantum Electronics, 1986
ABSTRACT
Journal of The Optical Society of America B-optical Physics, Aug 1, 1997
The photoconductivity and holographic current have been studied in Er-, Tm-, and Ho-doped Y 3 Sc ... more The photoconductivity and holographic current have been studied in Er-, Tm-, and Ho-doped Y 3 Sc 2 Ga 3 O 12 laser crystals under visible and infrared excitation. Kinetics and spectroscopic studies have shown that photoconductivity is linearly proportional to the concentration of excited 4f states. The holographic current was described with a model accounting for the energy transfer between the rare-earth and ligand electronic shells, ionization, recombination, and the diffusion and drift currents in the conduction band. The dependence of the holographic current on the modulation frequency, grating vector, etc. were used to determine the carriers' diffusion length and the screening length in Er-doped crystals.
Proceedings of SPIE, Nov 11, 1996
ABSTRACT
Proceedings of SPIE, Oct 25, 1996
ABSTRACT
Proceedings of SPIE, Jul 31, 2002
ABSTRACT
Optical channeling and diffraction in the photorefractive crystals and chalcogenide films
Proceedings of SPIE, Nov 1, 2002
We have studied holographic grating recordings in Fe-doped photorefractive crystals LiNbO<sub&... more We have studied holographic grating recordings in Fe-doped photorefractive crystals LiNbO<sub>3</sub> (LN), in doped As-S-Se chalcogenide glassy semiconductors (CGS), and in CGS based.
Proceedings of SPIE, Sep 23, 1998
ABSTRACT
Peculiarities of ferroelectric emission from photorefractive z-cut LiNbO3
When 514 nm Ar-laser beam is focused on C-face of a LiNbO3 :Fe crystal a strong photo-induced bac... more When 514 nm Ar-laser beam is focused on C-face of a LiNbO3 :Fe crystal a strong photo-induced back scattering can clearly be observed. Depending on distance between the crystal and a lens, several types of backscattering have been observed. In case of diverging beam the ...
Channeling in LiNbO3 :Fe Modulated by Holographic Stress Field Superlattice
MRS Proceedings, 1993
ABSTRACTPhoton and proton channeling have been observed in LiNbO3:Fe crystals which have holograp... more ABSTRACTPhoton and proton channeling have been observed in LiNbO3:Fe crystals which have holographically recorded electric field gratings. An analogy between photon and proton channeling is developed and compared with the experimental results.
New optical approach to decontamination technologies based on photoinduced running gratings
Optical Engineering, Sep 1, 1998
New optical approach to decontamination technologies based on photoinduced running gratings. [Opt... more New optical approach to decontamination technologies based on photoinduced running gratings. [Optical Engineering 37, 2597 (1998)]. Nickolai V. Kukhtarev, Tatiana V. Kukhtareva, Jeanette Jones, E. Ward, H. John Caulfield. Abstract. ...
Chameling in 'LI''NB''O IND.3': 'FE' modulated by holographic stress field superlattice
Materials Research Society Symposium Proceedings, 1994
Near-field spatial light modulator based on photoinduced hexagonal array of waveguides
Conference on Lasers and Electro-Optics (CLEO 2000). Technical Digest. Postconference Edition. TOPS Vol.39 (IEEE Cat. No.00CH37088), 2000
ABSTRACT
Double dynamic holographic interferometry in infrared-optical and electrical functions
2006 Conference on Lasers and Electro-Optics and 2006 Quantum Electronics and Laser Science Conference, 2006
ABSTRACT
Pyroelectric and photo-galvanic effects for generation of the focused electron beam, X-rays, photo-actuation and electric micro-propulsion
2005 12th International Symposium on Electrets
... B.Penn, H.Abdelaem et al i Photogalvanic pulsator, CLEO '2002, Technical Digest, SPIE Pr... more ... B.Penn, H.Abdelaem et al i Photogalvanic pulsator, CLEO '2002, Technical Digest, SPIE Proc., Vol.4803, p.261, (2002) 11 .N.Kukhtarev, T.Kukhtareva, M. Bayssie D.Frazier, B.Penn, H.Abdelaem et al Photo-induced Optical and Electrical Pulsations and Pattern Formation in ...
International Journal of Modern Physics B, 2006
Electron clusters, X-rays and nanosecond radio-frequency pulses are produced by 100 mW continuous... more Electron clusters, X-rays and nanosecond radio-frequency pulses are produced by 100 mW continuous-wave laser illuminating ferroelectric crystal of LiNbO 3. A long-living stable electron droplet with the size of about 100μ m has freely moved with the velocity ~0.5 cm/s in the air near the surface of the crystal experiencing the Earth gravitational field. The microscopic model of cluster stability, which is based on submicroscopic mechanics developed in the real physical space, is suggested. The role of a restraining force plays the inerton field, a substructure of the particles' matter waves, which a solitary one can elastically withstand the Coulomb repulsion of electrons. It is shown that electrons in the droplet are heavy electrons whose mass exceeds the rest mass of free electron at least 1 million of times. Application for X-ray imaging and lithography is discussed.
Continuous wave generated nanosecond electrical and optical pulses from photorefractive lithium niobate fibers
2005 Quantum Electronics and Laser Science Conference, 2005
Page 1. Continuous Wave Generated Nanosecond Electrical and Optical Pulses from Photorefractive L... more Page 1. Continuous Wave Generated Nanosecond Electrical and Optical Pulses from Photorefractive Lithium Niobate Fibers N. Kukhtarev, T. Kukhtareva Alabama A&M University Department of Physics Normal, Alabama 35762, nkukhtarev@aamu.edu ...
Operational Characteristics and Crystal Growth of Nonlinear Optical Materials II, 2005
We discuss phenomena of the optical photons and charged particle channeling in the periodic struc... more We discuss phenomena of the optical photons and charged particle channeling in the periodic structures. While particle (as protons) channeling is widely used for the characterization of defects in crystals, channeling of photons is less known. We have demonstrated feasibility of optical channeling method for copying of phase radial grating on the chalcogenide semiconductor glass film and photo-thermoplastic films (PTPF).
2010 International Conference on Advanced Optoelectronics and Lasers, 2010
We describe spectroscopic investigations of Cd1_ xHgx Te:V:Mn crystals. It was shown that the ele... more We describe spectroscopic investigations of Cd1_ xHgx Te:V:Mn crystals. It was shown that the electronic processes in this material are fast and occur in nanosecond range. These materials are very sensitive up to 1800 nm. The nature of the electronic transitions which determine their NIR photosensitivity was established. At present there is a strong need for fast near-infrared (NIR) photorefractive materials and devices with the potential applications in the areas of optical communications, optical storage, image recognition, optical computing and optoelectronics, including the elaboration of novel adaptive sensors for laser systems of remote ultrasonic inspection of the quality of different industrial goods and highly sensitive laser vibrometers for the detection of vibration over a wide frequancy spectrum [1, 2, 3, 4]. Last decade the photorefractive
Generation of self-focused electron beam by pyroelectric/photogalvanic crystal accelerators
SPIE Proceedings, 2008
ABSTRACT
Energy exchange between optical waves due to self-diffraction by photorefractive gratings in a CdTe crystal
Soviet Journal of Quantum Electronics, 1990
Theoretical and experimental investigations were made of a photorefractive nonlinearity of CdTe s... more Theoretical and experimental investigations were made of a photorefractive nonlinearity of CdTe semiconductor crystals. Photorefractive gratings were formed in undoped CdTe and used to provide efficient energy exchange between nanosecond pulsed light beams (lambda approx 1.06 mum) characterized by an exchange gain of ~ 0.13 cm - 1. Bibtex entry for this abstract Preferred format for this abstract (see Preferences)
Critical phenomena in self-diffraction gyration of laser beams in electrooptic crystals
Soviet Journal of Quantum Electronics, 1986
ABSTRACT
Journal of The Optical Society of America B-optical Physics, Aug 1, 1997
The photoconductivity and holographic current have been studied in Er-, Tm-, and Ho-doped Y 3 Sc ... more The photoconductivity and holographic current have been studied in Er-, Tm-, and Ho-doped Y 3 Sc 2 Ga 3 O 12 laser crystals under visible and infrared excitation. Kinetics and spectroscopic studies have shown that photoconductivity is linearly proportional to the concentration of excited 4f states. The holographic current was described with a model accounting for the energy transfer between the rare-earth and ligand electronic shells, ionization, recombination, and the diffusion and drift currents in the conduction band. The dependence of the holographic current on the modulation frequency, grating vector, etc. were used to determine the carriers' diffusion length and the screening length in Er-doped crystals.
Proceedings of SPIE, Nov 11, 1996
ABSTRACT
Proceedings of SPIE, Oct 25, 1996
ABSTRACT
Proceedings of SPIE, Jul 31, 2002
ABSTRACT
Optical channeling and diffraction in the photorefractive crystals and chalcogenide films
Proceedings of SPIE, Nov 1, 2002
We have studied holographic grating recordings in Fe-doped photorefractive crystals LiNbO<sub&... more We have studied holographic grating recordings in Fe-doped photorefractive crystals LiNbO<sub>3</sub> (LN), in doped As-S-Se chalcogenide glassy semiconductors (CGS), and in CGS based.
Proceedings of SPIE, Sep 23, 1998
ABSTRACT
Peculiarities of ferroelectric emission from photorefractive z-cut LiNbO3
When 514 nm Ar-laser beam is focused on C-face of a LiNbO3 :Fe crystal a strong photo-induced bac... more When 514 nm Ar-laser beam is focused on C-face of a LiNbO3 :Fe crystal a strong photo-induced back scattering can clearly be observed. Depending on distance between the crystal and a lens, several types of backscattering have been observed. In case of diverging beam the ...
Channeling in LiNbO3 :Fe Modulated by Holographic Stress Field Superlattice
MRS Proceedings, 1993
ABSTRACTPhoton and proton channeling have been observed in LiNbO3:Fe crystals which have holograp... more ABSTRACTPhoton and proton channeling have been observed in LiNbO3:Fe crystals which have holographically recorded electric field gratings. An analogy between photon and proton channeling is developed and compared with the experimental results.
New optical approach to decontamination technologies based on photoinduced running gratings
Optical Engineering, Sep 1, 1998
New optical approach to decontamination technologies based on photoinduced running gratings. [Opt... more New optical approach to decontamination technologies based on photoinduced running gratings. [Optical Engineering 37, 2597 (1998)]. Nickolai V. Kukhtarev, Tatiana V. Kukhtareva, Jeanette Jones, E. Ward, H. John Caulfield. Abstract. ...
Chameling in 'LI''NB''O IND.3': 'FE' modulated by holographic stress field superlattice
Materials Research Society Symposium Proceedings, 1994
Near-field spatial light modulator based on photoinduced hexagonal array of waveguides
Conference on Lasers and Electro-Optics (CLEO 2000). Technical Digest. Postconference Edition. TOPS Vol.39 (IEEE Cat. No.00CH37088), 2000
ABSTRACT
Double dynamic holographic interferometry in infrared-optical and electrical functions
2006 Conference on Lasers and Electro-Optics and 2006 Quantum Electronics and Laser Science Conference, 2006
ABSTRACT
Pyroelectric and photo-galvanic effects for generation of the focused electron beam, X-rays, photo-actuation and electric micro-propulsion
2005 12th International Symposium on Electrets
... B.Penn, H.Abdelaem et al i Photogalvanic pulsator, CLEO '2002, Technical Digest, SPIE Pr... more ... B.Penn, H.Abdelaem et al i Photogalvanic pulsator, CLEO '2002, Technical Digest, SPIE Proc., Vol.4803, p.261, (2002) 11 .N.Kukhtarev, T.Kukhtareva, M. Bayssie D.Frazier, B.Penn, H.Abdelaem et al Photo-induced Optical and Electrical Pulsations and Pattern Formation in ...
International Journal of Modern Physics B, 2006
Electron clusters, X-rays and nanosecond radio-frequency pulses are produced by 100 mW continuous... more Electron clusters, X-rays and nanosecond radio-frequency pulses are produced by 100 mW continuous-wave laser illuminating ferroelectric crystal of LiNbO 3. A long-living stable electron droplet with the size of about 100μ m has freely moved with the velocity ~0.5 cm/s in the air near the surface of the crystal experiencing the Earth gravitational field. The microscopic model of cluster stability, which is based on submicroscopic mechanics developed in the real physical space, is suggested. The role of a restraining force plays the inerton field, a substructure of the particles' matter waves, which a solitary one can elastically withstand the Coulomb repulsion of electrons. It is shown that electrons in the droplet are heavy electrons whose mass exceeds the rest mass of free electron at least 1 million of times. Application for X-ray imaging and lithography is discussed.
Continuous wave generated nanosecond electrical and optical pulses from photorefractive lithium niobate fibers
2005 Quantum Electronics and Laser Science Conference, 2005
Page 1. Continuous Wave Generated Nanosecond Electrical and Optical Pulses from Photorefractive L... more Page 1. Continuous Wave Generated Nanosecond Electrical and Optical Pulses from Photorefractive Lithium Niobate Fibers N. Kukhtarev, T. Kukhtareva Alabama A&M University Department of Physics Normal, Alabama 35762, nkukhtarev@aamu.edu ...
Operational Characteristics and Crystal Growth of Nonlinear Optical Materials II, 2005
We discuss phenomena of the optical photons and charged particle channeling in the periodic struc... more We discuss phenomena of the optical photons and charged particle channeling in the periodic structures. While particle (as protons) channeling is widely used for the characterization of defects in crystals, channeling of photons is less known. We have demonstrated feasibility of optical channeling method for copying of phase radial grating on the chalcogenide semiconductor glass film and photo-thermoplastic films (PTPF).
2010 International Conference on Advanced Optoelectronics and Lasers, 2010
We describe spectroscopic investigations of Cd1_ xHgx Te:V:Mn crystals. It was shown that the ele... more We describe spectroscopic investigations of Cd1_ xHgx Te:V:Mn crystals. It was shown that the electronic processes in this material are fast and occur in nanosecond range. These materials are very sensitive up to 1800 nm. The nature of the electronic transitions which determine their NIR photosensitivity was established. At present there is a strong need for fast near-infrared (NIR) photorefractive materials and devices with the potential applications in the areas of optical communications, optical storage, image recognition, optical computing and optoelectronics, including the elaboration of novel adaptive sensors for laser systems of remote ultrasonic inspection of the quality of different industrial goods and highly sensitive laser vibrometers for the detection of vibration over a wide frequancy spectrum [1, 2, 3, 4]. Last decade the photorefractive
Generation of self-focused electron beam by pyroelectric/photogalvanic crystal accelerators
SPIE Proceedings, 2008
ABSTRACT