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1. I defended my MS thesis on July 29, 2019 in Materials Science at Norfolk State University, VA, USA.

2. Plasmonic laser: 

- DFB laser emitting at different angles and operating at different Bragg orders. (starting from m=2 and normal direction) 

- Same DFB laser: use different concentrations of dye and look for the transition between the weak coupling regime and the strong coupling regime. 

-Concentration dependence of the threshold, the concentration dependence of the laser wavelengths.

-Bifurcation in the interference patterns.

Skills Learned: Comsol Multiphysics Simulation, Preparing the R6G doped PMMA solution, Design, and Fabrication of grating structure with specific period using Holographic Lithography, Thermal Deposition, Profilometer, UV-VIS Spectroscopy, Setup for wavelength sweep, Setup for angular emission study, etc.

3. Study of the angular distribution of emission in the strong coupling regime of R6G dye. (i) Different concentrations, (ii) different cavity sizes.

Skills Learned: Comsol Multiphysics Simulation, Nanohub simulation, Preparing the R6G doped PMMA solution, Design, and Fabrication of resonant Fabry-Perot cavities sample, Thermal Deposition, Profilometer, UV-VIS Spectroscopy, setup for wavelength sweep, Setup for angular emission study, etc.

4. Paper accepted and presented on ‘‘Toward plasmonic control of light propagation in an optical fiber (Paper 10719-108)’’ at Metamaterials, Metadevices, and Metasystems 2018, Sunday - Thursday 19 - 23 August 2018. 

Abstract: The objective of this study is to control the transmission, dispersion and, eventually, the nonlinearity of an optical fiber by intercepting and manipulating, with a variety of plasmonic and metamaterial nanostructures, the evanescent field extending from the core to the cladding. The access to evanescent waves is enabled by placing the core close to the flat surface of the cladding in the so-called D-shaped fiber design. The D-shaped fiber has been fabricated and, as the first step, we have demonstrated that the fiber transmission can be controlled by highly concentrated rhodamine 6G molecules deposited onto the fiber’s flat surface.

5. Presented a poster on ‘Surface Emitting Plasmonic Laser with Distributed Feedback’ at CLEO: Applications and Technology 2018, San Jose, California United States, 13–18 May 2018. 

Abstract: We have demonstrated the novel low-threshold surface-emitting plasmonic laser and explained its performance in terms of the distributed feedback mechanism, providing a new degree of freedom to the laser design.

Skills learned: Paper writing, Poster preparation, Orel presentation of the poster, engage in deep questioning and dialog with peers etc.

6. Project in Summer and Fall, 2017, ‘feasibility study of how Plasmonic and hyperbolic metamaterial on a customized LLNL D-shaped fiber (which is designed and fabricated at LLNL) affects the transmission and other characteristics of the fiber’ in collaboration with National Ignition Facility (NIF), Lawrence Livermore National Laboratory (LLNL).

Under this project, I was on a three days training at National Ignition Facility (NIF), Lawrence Livermore National Laboratory (LLNL). On

Day 1: touring NIF facility with Dr. Zhi Liao, Optical Materials and Target Science (i.e. Laser damage study) lab with Dr. Ibo Matthews

Day 2: Basic to advanced experimental setup training by Dr. Reggie Drachenberg,

Day 3: Lumerical FDTD Simulation training by Dr. Eyal Feigenbaum.

Skills learned: First-hand experience in different fiber optics instruments in Fiber Optics Group Lab at LLNL, personal training in Lumerical FDTD simulation etc.

7. Project in Spring, 2017, ‘Plasmonic laser with the hybrid distributed feedback’,

Abstract: We have demonstrated the novel low-threshold plasmonic laser and qualitatively explained its performance in terms of a hybrid plasmonic-photonic feedback mechanism, providing a new degree of freedom to the laser design.

Skills learned: Comsol Multiphysics Simulation, Preparing the R6G solution, Design And Fabrication Of Cavity Laser With Metal And Dye, the experimental setup for laser locking setup, handling of Nd: YAG laser for pumping, measurement of output spectra, emission spectra by Spectrofluorimeter, etc.

8. Project for Fall, 2016, ‘Effect of Strong Coupling on Photodegradation of the P3HT Semiconducting Polymer’ under review for Optica, since June 2018.

Abstract: Strong coupling of quantum wells, quantum dots and dye molecules with resonant cavities and surface plasmons enables scores of physical phenomena, including splitting and avoided crossing behavior of the dispersion curves (with the Rabi energy ~1eV!), polaritonic lasers, resonant energy transfer, and control of chemical reactions. On the other hand, it has been 2 shown that redox chemical reactions, such as Photodegradation of the semiconducting polymer P3HT, can be controlled by a weak coupling with nonlocal metal/dielectric environments. In this study, we have combined the two phenomena and demonstrated that strong coupling of P3HT with a resonant Fabry-Perot cavity (characterized by a giant Rabi splitting of 1.0 eV) results in a three-fold reduction of the normalized P3HT photodegradation rate. The latter phenomenon is much stronger than the one demonstrated earlier near Ag/MgF2 thin film substrates and lamellar Ag/MgF2 metamaterials, manifesting that control of light-matter interaction in the strong coupling regime is more efficient than that in the weak coupling regime.

Skills Learned: Comsol Multiphysics Simulation, design and fabrication of hyperbolic metamaterials sample, Thermal Deposition, Profilometer, UV-VIS Spectroscopy, Sun simulator etc.

9. M.Sc. thesis: “Design and Simulation of Few Microstrip Patch Antennas for GPS Applications.”

Skills Learned: CST Microwave Studio simulation, MATLAB Coding of the theoretical problems, Microstrip Patch antenna fabrication, testing, Network analyzer etc.

10. Undergraduate (B.Sc.) Project: “Effect of Lattice Constant and Air Hole Diameter on the Mode Profile in Triangular and Square Lattice Photonic Crystal Fiber at THz Regime.” 

Skills Learned: Opti-FDTD simulation, theoretical analysis etc.