Optics and its applications : proceedings of the 9th International Symposium OPTICS 2022 This book features selected articles based on contributions presented at the 9th International Symposium on Optics and Its Applications (OPTICS 2022) in Yerevan Ashtarak Armenia. The annual OPTICS symposium brings together renowned experts from all over the world working in the fields of atomic optics plasmonics optics of nanostructures as well as the optics of condensed matter and provides a perfect setting for their discussions of the most recent developments in this area. The 9th iteration in this series dedicated to the 80th birthday of Academician Eduard Kazaryan focuses on topics dealing with the spectroscopy of real and artificial atoms linear and nonlinear optical characteristics of quantum wells and two dimensional materials. The book highlights recent results of few particle optical characteristics of artificial atoms in the framework of the exactly solvable Moshinsky model as well as an electro optical analog of the magneto optical Faraday effect. In addition a detailed study of the nucleation process its characterization as well as electronic and optical properties of graded composition quantum dots in the Stranski−Krastanov growth mode is presented. Current induced Optical Activity: First Observation and Comprehensive Study Optically pumped terahertz radiation sources based on impurity carrier transitions in quantum wells Broadband Absorption of Microwaves in Periodic Cylindrical Structures Dielectric conﬁnement aﬀected exciton polariton properties of the semiconductor nanowires Broadband Infrared Absorption Due to Low Q factor Dipole Modes of Cr Strips Microwave and Joule heating visualization by a thermo elastic microscope for carbon composite materials Acceptor assisted intraband photoconductivity in GaAs AlGaAs quantum wells Charge carriers’ states and optical transitions in CdS HgS CdS core shell shell cylindrical nanoststructure in the presence of strong uniform electrostatic ﬁeld Quasi conical quantum dot helium Radiation of surface polaritons in cylindrical waveguides Crossing points in spectra and light absorption in spheroidal and cone shaped quantum dots Electronic and Magnetic Properties of Laser Dressed Quantum Dot and Ring with Rashba Spin Orbit Coupling Magnetically induced atomic transitions of alkali metal atoms Eﬀect of molecular and electronic geometries on the electronic density in FLO SIC Approximate Solutions of a Kinetic Theory for Graphene Possibility of creating a low cost robot assistant for use in general medical institutions during the COVID 19 pandemic.