Measurement of Temperature Changes in PMMA Using Digital Holographic Interferometry

Amirmohammad Beigzadeh; Mohammad Reza Rashidian Vaziri; Farhood Ziaie; Mehdi Janbazi Roudbali

Volume 2, Issue 3 , March 2018, Pages 9-14

https://doi.org/10.30473/jphys.2019.44091.1075

Abstract
  Holographic interferometry is one of the accurate methods for measuring physical quantities such as stress, pressure, vibration, and temperature and refractive index changes especially in transparent solid materials. In this study, a digital Mach-Zehnder holographic interferometry setup was used to measure ...  Read More

Building a Graphical User Interface (GUI) in MATLAB for processing the received images from an optical interferometer

Mohammad Reza Rashidian Vaziri

Volume 2, Issue 3 , March 2018, Pages 15-22

https://doi.org/10.30473/jphys.2019.47441.1084

Abstract
  In this work, we report on update and automation of an old-fashioned interferometer by using image processing techniques and developing a Graphical User Interface (GUI) in the MATLAB environment. After updating the system and receiving the digital images of interference fringe patterns from the interferometer ...  Read More

Comparison of Energy Gain in Laser and Magnetic Fusion

nasrin hosseinimotlagh; Mohammad Ali Zarei

Volume 2, Issue 3 , March 2018, Pages 23-30

https://doi.org/10.30473/jphys.2019.45933.1081

Abstract
  In this paper the zero-dimensional nonlinear transport model is applied to obtain the energy and the densities of deuterium and tritium fuel ions, as well as the alpha-particles in fusion reactor for laser and magnetic confinement methods. In this work D-T fuel pllets with. KrF laser is used in laser ...  Read More

Dynamics of pulse propagation in gas-filled hollow-core photonic crystal fibers
Volume 2, Issue 3 , March 2018, Pages 31-36

https://doi.org/10.30473/jphys.2019.36404.1057

Abstract
  As a new approach based on a multiple scale perturbation theory, we have founded clearly that ionization in a hollow-core photonic crystal fiber filled by an ionizable gas leads to a soliton self-frequency blueshift, opposite to redshift due to Raman self-frequency. To analyze the hollow-core photonic ...  Read More

Study of TM surface waves in metamaterial photonic crystals with self-defocusing uniaxial nonlinear cap layer

karim Milanchian

Volume 2, Issue 3 , March 2018, Pages 37-44

https://doi.org/10.30473/jphys.2019.45419.1077

Abstract
  In this paper, we have analytically investigated the TM surface waves (SWs) by using the first integral of Maxwell’s equations in a semi-infinite one-dimensional photonic crystal (1DPC) which is truncated with the self-defocusing uniaxial nonlinear cap layer. We have studied the considered 1DPC ...  Read More

Effects of density and energy difference of two beams on the picks growth rate in a two-stream free electron laser

Nader Mahdizadeh

Volume 2, Issue 3 , March 2018, Pages 45-52

https://doi.org/10.30473/jphys.2019.41939.1067

Abstract
  By linearizing and using Floquet’s theorem Maxwell equations, continuity and momentum equations are solved. Dispersion relation (DR) of a two stream free electron laser (FEL) with a helical wiggler pump is obtained. The DR which shows coupling of all modes is derived with using a fluid approach. ...  Read More

Fluxon Behavior of Josephson Junction in Inhomogeneous Media

Sara Khosravani

Volume 2, Issue 3 , March 2018, Pages 53-60

https://doi.org/10.30473/jphys.2018.42211.1072

Abstract
  Abstract: If the dielectric between two superconductors of the Josephson junction is homogeneous the governing equation for the phase of the system can be described by the sine-Gordon equation. In this paper, we consider inhomogeneous dielectric medium, such that the dielectric constant is position dependent. ...  Read More

Spin waves of single-molecule magnet Fe8 with respect to dipolar and quadrupole excitations

yousef yousefi

Volume 2, Issue 3 , March 2018, Pages 61-67

https://doi.org/10.30473/jphys.2019.45532.1078

Abstract
  In this paper, we have studied the equations describing the proposed experimental Hamiltonian of a single-molecule magnet Fe8. In this research, we used from coherent states in real parameter and Fayman path integral. These nonlinear equations fully described dynamic of this single-molecule magnet in ...  Read More