OMICS International OMICS International is a scientific organization that drives the progress of research through open access journals and organizes international conferences, The best in science news, commentary, and research. Journal of Lasers, Optics & Photonics Volume 4, Issue 2 From Liquid Crystals Localized Modes to Localized Modes in PhotonicCrystals Belyakov VA Role of Terahertz Radiation on Optical Properties of Laser Pulse in aDouble Coupled Quantum Well Nanostructure Shiri J and Malakzadeh A PtSymmetric Nonlinear Directional Fiber Couplers with Gain and Loss forUltrashort Optical Pulses Safaei L, Zarndi MB and Hatami M Strongly Optical Absorbing Nanostructures Containing Metal QuantumDots Theory Pokutnyi S Investigation of Thermal Changes in Dental Soft Tissue under 810 nmLow Level Diode Laser Radiation in Osseointegration Shahi S and Kouhrangiha F Optical Properties and Potential Applications of Nanoferrites Goswami N, Surendra S and Katyal SC Method of Elimination of the Residual Lumination of the LuminescentCovering of Screen Marina B, Narkiza B, Borodina K and Sorokina S Smart Dust Internet of Things IoT Progress Challenges Devendra K Sadana, Ning Li, Stephen W Bedell and Ghavam S Shahidi Monocolor Radiation Source Based on LowEnergy Electron Beam and DcFields With High Gradient of Electromagnetic Energy Density Lin H Optothermodynamic Method of Diagnosis of Absorption Coefficient in theLiquids Musayev MA, Hesenov QT, Hashimova NN, Ceferova AN Embedded Ring Modulators and Switches Das U and Sadasivan V