Alireza Keshavarz
Academic Appointments
Professor, Photonics and Physics
Contact
Email:
keshavarz@sutech.ac.ir
Professional Education
- B.Sc in Atomic Physics, from Department of Physics, Shiraz University, Shiraz,Iran, (1995).
- M.Sc in Atomic and Molecular Physics, from Department of Physics, Kerman University, Kerman, Iran, (1997).
- Ph.D in Atomic Physics (Optics and Laser), from Department of Physics, Shiraz University, Shiraz, Iran, (2004).
Courses
- Basic physics 1, 2 and 3
- Lab instructory
- Vacuum Technology (in B. Sc degree)
- Optics (in B. Sc degree)
- Laser (in B. Sc degree)
- Analytical mechanics 1 and 2 (in B. Sc degree)
- Mathematical Physics 1 and 2 (in B. Sc degree)
- Advance Laser (in M. Sc degree)
- Quantum Electrodynamics (in M. Sc degree)
- Advance Mathematics (in M. Sc degree)
- Advance Quantum Mechanics 1 and 2 (in M. Sc degree)
- Electrodynamics (in M. Sc degree)
- Quantum Optics (in M. Sc degree)
- Theory and Technology of optical Devices (in M. Sc degree)
- Optical Electronics (in M. Sc degree)
- Sc students final project
- Sc Supervisor and Advisor
- D. Supervisor and Advisor
Current Research
1. Nonlinear Optics
2. Nano-Photonics
3. Beam propagation
4. Fiber optics
All Publications
2017
- Keshavarz, Z. Roosta, Simulation of Propagation of Cos-Gaussian Beam in Strongly Nonlocal Nonlinear Media Using Paraxial Group Transformation, International Journal of Mathematical, Computational, Physical, Electrical and Computer Engineering 11, 90-93, (2017).
- Owji, A. Keshavarz and H. Mokhtari, Optical gain of a triple coaxial cylindrical quantum well wires laser under the geometrical effects and magnetic fields, Optik - International Journal for Light and Electron Optics, 139, 310, (2017).
- Keshavarz, S. Samimi, Simulation of an intracavity Q-switched optical parametric oscillator on the basis of rate equations,QUANTUM ELECTRON, 47 (3), 280–284 (2017).
- Naseri, A. Keshavarz, and G. Honarasa, Imaging properties of a nonlinear multilayered superlens, has been accepted for publication in International Journal of Modern Physics B on Mar 01, (2017).
- Owji, H. Mokhtari, and A. Keshavarz Effects of
temperature, pressure, and size on different transitions of optical
properties of spherical quantum dot, Iranian Journal of Science and Technology, Transactions A: Science, Published online 25 January (2017).
- Samimi, A. Keshavarz, The Influence of stimulated temperature-dependent emission cross section on intracavity optical parametric oscillator, Chinese Physics B, 26, 024207:1-4 (2017).
- Owji, A. Keshavarz and H. Mokhtari, The effects of a geometrical size, external electric fields and impurity on the optical gain of a quantum dot laser with a semi-parabolic spherical well potential, Physica B: Condensed Matter, 508, 7-11, (2017).
- Zamani, A. Keshavarz and H. Nadgaran, Quadratic electro-optic effect and electro absorption process of multi-layer spherical quantum dot enhanced by metal nano particle, Plasmonics, 12, 383-391 (2017) (Published online 10 June (2016)).
2016
- Hosseini Minabi, A. Keshavarz and A. Gharaati, The effect of temperature on optical absorption cross section of bimetallic core-shell nano particles, Journal of optoelectronical Nanostructures, 1(3), 67-76, (2016).
- Keshavarz, Z. Abbasi, Spatial soliton pairs in an unbiased photovoltaic-photorefractive crystal circuit, Journal of optoelectronical Nanostructures, 1, 81-90, (2016).
- Motamed Jahromi, M. Hatami and A. Keshavarz, Equations of Pulse Propagation in Three-Layer Structure of As2S3 Chalcogenide Plasmonic Nano-Waveguides, International Journal of Mathematical, Computational, Physical, Electrical and Computer Engineering 10, 509-516 (2016).
- Dezhkam, A. Zakery and A. Keshavarz, Intersubband, Interband Transitions and Optical Properties of Two Vertically Coupled Hemispherical Quantum Dots with Wetting Layers, Chinese Physics Letter, 14, 121904:1-4, (2016).
- Hosseini, A. Keshavarz and P. Khojaste, The effect of size confinement on the optical absorption coefficient of PbSe, Optik. Int. J. for Light and Electron. Optik, 127, 10610-10613, (2016).
- Owji, A. Keshavarz and H. Mokhtari, The effects of temperature, hydrostatic pressure and size on optical gain for GaAs spherical quantum dot laser with hydrogen impurity, Superlattices and Microstructures, 98, 276-282, (2016).
- Keshavarz and M. Naseri, Gaussian beam propagation in a Kerr type metamaterial medium using ABCD matrix method, Communications in Theoretical Physics, 66, 231-236, (2016).
- Samimi; A. Keshavarz, Investigation of Thermal Induced Diffraction Loss on Q-Switched Intracavity Optical Parametric Oscillator, Optics Communications, 359, 184-188, (2016).
- Honarasa, Z. Farmani and A. Keshavarz, Propagation of Cartesian Beams in the Non-Kerr Law Media with Power Law Nonlinearity, Optik. Int. J. for Light and Electron. Optik, 127, 867-870, (2016).
- Zamani, A.Keshavarz and H.Nadgaran, The effect of metal nan particle on optical absorption coefficient of multi-layer spherical quantum dot, Physica B: Condensed Matter, 490, 57–62, (2016).
- Abbasi, A. Keshavarz, M. Hatami and G. Solookinejad, Incoherent interaction between bright-bright photovoltaic soliton in an unbiased series two-photon photorefractive crystal circuit, Self-deflection investigation, The Arabian Journal for Science and Engineering (AJSE), 41, 325-332, (2016).
- Bagheri, H. Pakarzadeh, and A. Keshavarz, Gain-saturated one-pump fiber optical parametric amplifiers in presence of longitudinal dispersion fluctuations, Appl. Opt. 55(13), 3368-3372 (2016).
2015
- Keshavarz, Propagation of Cos-Gaussian Beam in Photorefractive Crystal, International Journal of Mathematical, Computational, Physical, Electrical and Computer Engineering 9, 684-687 (2015).
- Kazempour, A. Keshavarz and G. Honarasa, Effects of Resonator Input Power on Kerr Lens Mode-locked Lasers, Pramana-Journal of Physics, 85, 115-124, (2015).
- Keshavarz and M. Naseri, Propagation of Gaussian beams family through a Kerr-type left handed metamaterial, Chinese Physics B, 24, 044202:1-6, (2015).
- Zamani, A. Keshavarz and H. Nadgaran, Nano multi-layered spherical quantum dot shape optimization by PSO algorithm: maximizing the optical absorption coefficient, Superlattices and Microstructures, 77, 82-90, (2015).
- Keshavarz and S. Samimi, The influence of energy transfer upconversion on Q-switched single resonator optical parametric oscillator, Laser Physics, 25, 095401:1-4, (2015).
- Keymasi, A. Keshavarz and M. Hatami, The effect of porosity on the current electron density at dye solar cell, Optik. Int. J. for Light and Electron. Optik, 126, 2539-2542, (2015).
- Mosallanezhad and A. Keshavarz, Design and optimizations of Quasi periodic microcavity with high quality factor and its application in Quantum-Dot lasers, Optical Engineering, 54, 106102:1-7, (2015).
- Tahmasebi, A. Keshavarz and M. Hatami, Optical Transmission and Bistability of Light in Nano Fabry-Perot Resonator with Nanocavity Containing Negative Index Material, Optik. Int. J. for Light and Electron. Optik, 126, 5357-5362, (2015).
2014
- Farid, A. Keshavarz and M. Hatami, Coupled-mode analysis of fiber Bragg grating made of metamaterial, Optik. Int. J. for Light and Electron. Optik, 125, 714-716 (2014).
- Keshavarz and G. Honarasa, Propagation of Lorentz-Gaussian Beams in Strongly Nonlocal Nonlinear Media, Commun. Theor. Phys. 61, 241-245, (2014).
- Parang, A. Keshavarz and N. Zamani, Optimization of Optical Absorption Coefficient in Double Modified Poschl-Teller Quantum Wells, Journal of Computational Electronics (JCEL), 13, 1020-1025, (2014).
- Pakarzadeh, M. Bagheri, A. Keshavarz, Designing one-pump fiber optical parametric amplifiers for an insensitive amplification to dispersion fluctuations, Journal of Nonlinear Optical Physics and Materials [JNOPM], 23, 1450023:1-12, (2014).
- Keshavarz and G. Honarasa, Propagation of Ince–Gaussian beams in strongly nonlocal nonlinear media using paraxial group transformation, Journal of Nonlinear Optical Physics and Materials [JNOPM], 23, 1450035:1-11, (2014).
2013
- Parang, A. Keshavarz, M.J. Karimi, Magnetic field effects on the optical properties of double semi-parabolic quantum wells, J. Comput. and Theor. Nanosci., 10, 1150-1155, (2013).
- Keshavarz, N. Zamani, Optimization of optical absorption coefficient in asymmetric double rectangular quantum wells by PSO algorithm, Optics Communications 294, 401–404, (2013).
- Keshavarz, N. Zamani, Optical properties of modifed Poschl-Teller quantum well with spatially dependent mass, J. Comput. and Theor. Nanosci., 10, 2155-2160, (2013).
- Zamani, A. Keshavarz and M.J. Karimi, Electron Raman Scattering in Double Semi-Parabolic Quantum Wells, Chinese Physics B, 22, 057802-(1-4), (2013).
- Keshavarz, N. Zamani, Optical properties of modifed Poschl-Teller quantum well with spatially dependent mass, Superlattices and Microstructures, 58, 191–197 , (2013).
- Keshavarz, N. Zamani, Optimization of Electron Raman Scattering in Double Rectangular quantum Wells, Iranian Journal of Numerical Analysis and Optimization (IJNAO), 3, 13-20, (2013).
- Keshavarz, Z. Parang and N. Naseri, The effect of sulfuric acid, oxalic acid and their combination on the size and regularity of porous alumina by anodization, Journal of Nanostructure in Chemistry, 3, 34-38, (2013).
- Honarasa and A. Keshavarz, Propagation of the two-dimensional elegant Hermite-cosh-Gaussian beams in strongly nonlocal nonlinear media, Optik. Int. J. for Light and Electron. Optik, 124, 6535-6538, (2013).
- Nazari, Karimi, A. Keshavarz, Linear and nonlinear optical absorption coefficients and refractive index changes in modulation-doped quantum wells: Effects of the magnetic field and hydrostatic pressure, Physica B: Condensed Matter, 428, 30-35, (2013).
2012
- Parang, A. Keshavarz, S. Farahi, S. M. Elahi, M. Ghoranneviss and A. Naseri, PREPARATION AND INVESTIGATION OF OPTICAL, THERMAL, AND ELECTROCHEMICAL ROPERTIES OF Ag/Co NANOPARTICLES, NANO: Brief Reports and Reviews, Vol. 7, No. 2 (2012) .
- Parang, A. Keshavarz, S. Farahi, S. M. Elahi, M. Ghoranneviss and S. Parhoodeh, Fluorescence Emission Spectra of Silver and Silver/Cobalt Nanoparticles, Scientia Iranica F, Vol. 19, No. 3, 943-947, (2012).
- Abbasi , M. Hatami and A. Keshavarz, Incoherent interaction between bright–bright photovoltaic soliton in an unbiased series two-photon photorefractive crystal circuit, Optics & Laser Tech. Optics & Laser Technology, 44, 2413–2417, (2012).
- J. Karimi and A. Keshavarz, Second harmonic generation in asymmetric double semi-parabolic quantum wells: Effects of electric and magnetic fields, hydrostatic pressure and temperature, PHYSICA E, 44, 1900-1904, (2012).
- Zamani, A. Keshavarz and M. Soleimanivareki, Optimization of nonlinear optical rectification coefficient in asymmetric double quantum wells, The Journal of Mathematics and Computer Science, 5, 75-81, (2012).
- Keshavarz, Z. Abbasi, and M. Hatami, Propagation of Incoherently Coupled Soliton Pairs in Photorefractive Crystals and their Self Deflection, International Journal of Optics and Photonics (IJOP), Vol. 6, No.1, Winter-Spring, (2012).
- Keshavarz and M. S. Kazempour, Numerical Calculation of Coupling Efficiency for an Elegant Hermite-Cosh-Gaussian Beams, International Journal of Optics and Photonics (IJOP), Vol. 6, No.2, Summer-Fall, (2012).
2011
- Keshavarz and M. Kamranfard, One dimensional optical dark screening photovoltaic photorefractive solitons, soliton pairs and incoherent interaction between them in crystal, Optik. Int. J. for Light and Electron. Opt, 122, 235, (2011).
- J. Karimi, A. Keshavarz and A. Poostforush, Linear and nonlinear intersubband optical absorption of finite and infinite semi-parabolic quantum wells, Modern Physics Letters B, Vol. 25, 497–507, (2011).
- J. Karimi, A. Keshavarz, and M. Rezaei, Optical rectification and second harmonic generation of finite and infinite semi-parabolic quantum wells, J. Comput. and Theor. Nanosci., Vol.8, 1340-1345, (2011).
- J. Karimi, A. Keshavarz and A. Poostforush, Linear and nonlinear intersubband optical absorption and refractive index changes of asymmetric double semi-parabolic quantum wells, Superlattices and Microstructures 49, 441–452, (2011).
- J. Karimi and A. Keshavarz, Electric field effects on the linear and nonlinear intersubband optical properties of double semi-parabolic quantum wells, Superlattices and Microstructures, 50, 572-581, (2011).
2010
- Keshavarz and M.J. Karimi, Linear and nonlinear intersubband optical absorption in symmetric double semi-parabolic quantum wells, Physics Letters A, 374, 2675-2680, (2010).
- Rezaei, ,M. J. Karimi ,and A.Keshavarz, Excitonic effects on the nonlinear intersubband optical properties of a semi-parabolic one-dimensional quantum dot, PHYSICA E, 43, 475-481, (2010).
2009
- Keshavarz and Z. Khalife, One dimensional optical bright screening photovoltaic photorefractive solitons, soliton pairs and incoherent interaction between them in crystal, Optik. Int. J. for Light and Electron, 120, 535-542, (2009).
- Papari, M.Kiani, A. Keshavarz and J. Moghadasi, Determining coefficients of equations of state from velocity of sound date, High Temperatures, High Pressures. 0, 1, (2009).
- Emami, M. Hatami, A. R. Kashavarz, and A. H. Jafari, A heuristic method to simulate the pulse propagation in nonlinear fiber bragg gratings , Opt. Quant. Electron, 41, 429, (2009).
2005
- Keshavarz and A. Zakery, One dimensional optical spatial screening solitons in photorefractive media and incoherent interaction between them, Iranian J. Phys. Research, 4, 255, (2005).
2004
- Zakery and A. Keshavarz, Simulation of the incoherently interaction between bright spatial photorefractive screening solitons in one and two dimensions J. Phys. D: Appl. Phys. 37,3409 , (2004).
- Zakery and A. Keshavarz, Incoherently Coupled Photorefractive Bright-Bright Soliton Pairs in One and Two Dimensions, Optik. Int. J. for Light and Electron. Opt, 115, 512, (2004).
1999
- Matloob, A. Keshavarz and D. Sedighi, Casimir effect for two lossy dispersive dielectric slabs Phys. Rev, A60, 3410 (1999).
International conferences:
2015
- Keshavarz, Propagation of Cos-Gaussian Beam in Photorefractive Crystal, Proceedings of the ICLOP 2015: 17th International Conference on Lasers, Optics and Photonics, Istanbul, Turkey, 21-22 December (2015).
- Samimi, A. Keshavarz and M. Hatami, Investigation of Laser Rate Equation with Plan Wave Spatial Distribution, Proceedings of the International Conference on Non-Linear System & Optimization in Computer & Electrical Engineering, Dubai, 26-27 May (2015).
2014
- Keshavarz and E. Tahmasebi, Influence of Gain on Transmission of Nanocavity Containing Metamaterials, Proceedings of the 14th International Conference on Numerical Simulation of Optoelectronic Devices NUSOD 2014, Palma de Mallorca, Spain, September 1-4, (2014).
- Keshavarz, N. Zamani and H. Nadgaran, Optical Gain in Double Semi-Parabolic Quantum Well Laser typical of AlGaAs/GaAs, Proceedings of the 14th International Conference on Numerical Simulation of Optoelectronic Devices NUSOD 2014, Palma de Mallorca, Spain, September 1-4, (2014).
2012
- Kargar and A. Keshavarz, Temperature Effects on the Linear and Nonlinear Optical Absorption Coefficient in Semi-Parabolic Quantum Wells, Proceedings of the International Conferences on Fundamental and Applied Sciences 2012, AIP Conf. Proc. 1482, 661-663 (2012).
- Keshavarz, N. Zamani and F. Emami, Investigation of optical gain in GaAs/GaAs symmetric double semi-parabolic quantum well laser, Proceedings of the Photonics Global Conference, PGC 2012, Singapore; 13-16 December (2012).
- Honarasa, A. Keshavarz, and N. Zamani, Linear and nonlinear optical properties of quantum well with position-dependent effective mass, Proceedings of the Photonics Global Conference, PGC 2012; Singapore; 13-16 December (2012).
2011
- Keshavarz, Z. parang and A. Nasseri, Investigation of sulfuric and oxalic acids and their combination on the size and regularity of the pores of alumina by anodization, Proceedings of the 2nd Conferences on Applications of Nanotechnology in Science, Engineering and Medicine (NTC2011), Mashhad-Iran, May 16-17, (2011).
- Keshavarz, M. Hatami and Z. Abbasi, Simulation of incoherent interaction between bright-bright screening soliton in an unbiased series two-photon photorefractive crystal circuit, Proceedings of the 11th International Conference on Numerical Simulation of Optoelectronic Devices NUSOD 2011, Rome, Italy, September 5-8, (2011).
- Hatami, Z. Tahmasbi, A. Keshavarz, and G. Honarasa, Simulation of gain saturation on dark soliton switching in Er+3- doped chalcogenide glasses, Proceedings of the 11th International Conference on Numerical Simulation of Optoelectronic Devices NUSOD 2011, Rome, Italy, September 5-8, (2011).
- Emami, A. Rahimi-Kazerooni and A. Keshavarz, Trapping Power Improvement of Twin-Core Fiber Optical Tweezers, Proceedings of the 11th International Conference on Numerical Simulation of Optoelectronic Devices NUSOD 2011, Rome, Italy, September 5-8, (2011).
2010
- Emami, A. H. Jafari, M. Hatami, and A. Kashavarz, An Efficient Method to Simulate the Pulse Propagation and Switching Effects of a Fiber Bragg Grating, Proceedings of the International MultiConference of Engineers and Computer Scientist, Vol. II, IMECS, March 17-19, Hong Kong, (2010).
- Jahedi, M. Hemmati and A. Keshavarz, Existence of energy-minimizing surface, Proceedings of the 3rd Mathematics Annual National Conference of PNU, Payame Noor University of Mashhhad, Mashhad, Iran, May 19-20, 175, (2010).
- Keshavarz , F. Emami , M. Hatami and P. Elahi, The Effect of Temperature on the Soliton Propagation in Photorefractive SBN Crystal in One Dimension, Proceedings of the PIERS, cambridge, USA, July 5-8, 564, (2010).
- Keshavarz , M. Hatami and S. Jahedi, The Crank-Nicholson investigation of the one dimensional photorefractive Screening soliton, Proceedings of the Applied Mathematics International Conference(AMIC2010), & The 6th EASIAM Conference, Kuala Lumpur, MALAYSIA, 22 -24 June, 55, (2010).
- Hatami, A. Keshavarz and N. Balali, Numerical study of collision and absorption of two vector solitons, Proceedings of the Applied Mathematics International Conference(AMIC2010), & The 6th EASIAM Conference, Kuala Lumpur, MALAYSIA, 22 -24 June, 55, (2010).
- Keshavarz , Z. parang, S. Parhoodeh, A. Nasseri, S. M. Elahi and M. Ghoranneviss, FABRICATION OF ALUMINA NANOPOROUS BY ANODIZATION IN DIFFERENT ELECTROLYTES, Proceedings of the International Congress on Nanoscience and Nanotechnology, Shiraz, Iran, November 9-11, (2010).
- Elahi, A. Keshavarz and M. Mehdipour , The emission differential cross section of an electron in the semi-parabolic quantum well, Proceedings of the International Conference on Theoretical Physics, DUBNA-NANO, Dubna, Russia, July 5-10, (2010).
- Keshavarz, P.Elahi, S. Rezazadeh, Thermal stress effects in pulsed pump solid state lasers with super-Gaussian profile, Proceedings of the 16th international school on quantum electronics, Laser physics and Applications, Nessebar, Bulgaria, September 20-24, (2010).
- Keshavarz, G. Honarasa, T. Alamfard, Temperature distribution and thermal lensing in a flash lamp pumped Nd:YAG laser, Proceedings of the 16th international school on quantum electronics, Laser physics and Applications, Nessebar, Bulgaria, September 20-24, (2010).
2009
- Keshavarz, Interaction between Two Photorefractive Bright Solitons in Different Dimensions , Proceedings of the PIERS, Beijing, China, March 23-27, (2009).
- Keshavarz, L. Sadralsadati, and M. Hatami, Simulation of Soliton Propagation in Photovoltaic Photorefractive Two-photon Materials and Study the Switching Behavior, Proceedings of the PIERS, Moscow, Russia, August 18-21, 1823, (2009).
- Hatami, A. Keshavars, N. Dehkordi Balali, and F. Kargar, Design of an All Optical Routing Self Switch by Using the Collision of the Spatial Solitons in a Non-Kerr Nonlinearity, Proceedings of the PIERS, Moscow, Russia, August 18-21, 1827, (2009).
- Emami, A. R. Kashavarz, and H. Sarikhani-Khorami, Effects of the Air-Hole Positions on Transmission Spectrum of a Silicon Micro-Cavity Photonic Crystal Filter, Proceedings of the PIERS, Moscow, Russia, August 18-21, 1848, (2009).
- Emami, M. Hatami, A. R. Kashavarz, and A. H. Jafari, A Heuristic Fast Method to Solve the Nonlinear Schorodinger Equation in Fiber Bragg Gratings with Arbitrary Shape Input Pulse, Proceedings of the American Institute of Physics(AIP), August 13, 1148, 774, (2009).
- Elahi, A. Keshavarz, M. Hatami and F. Kalantarifard, The Analytical Investigation of The Stability Range of Diod-End- Pumped Laser Cavity with Thermal Effects Consideration, Proceedings of the YOSC-2009, Moscow, Russia, February 2-7, 19 (2009).