Abstract:IN THE TREATMENT OF THE DYNAMIC PROBLEMS OF STRUCTURES, TWO ALTERNATE TESTING METHODS, BASED ON EXTERNAL AND EMBEDDED SENSORS, EXIST IN THE LITERATURE. IF THE SENSORS RESPOND TO THE CHANGES IN THE DYNAMIC CHARACTERISTICS OF THE STRUCTURE, AND/OR THE ENVIRONMENT, THEN THEY ARE REFERRED TO "SMART"… more
Abstract:FABRY-PEROT INTERFEROMETERS ARE ROUTINELY USED IN STUDYING UPPER ATMOSPHERIC WIND VELOCITIES, TEMPERATURE DIFFERENCES, AND TO MONITOR WEAK EMISSIONS FROM ASTRONOMICALOBJECTS. FOR A GIVEN WAVELENGTH, ETALON PLATE SPACING AND INDEX OF REFRACTION OF MEDIUM BETWEEN THE PLATES, THE OUTPUTIS AN… more
Abstract:THERE IS A NEED FOR OPTICAL CRYSTALS, HAVING LARGE NONLINEAR COEFFICIENTS FOR OPERATION AS OPTICAL PARAMETRIC OSCILLATERS (OPO) IN THE MID IR REGION (1.5 TO 5.0 MICRONS). SINGLE CRYSTALS OF KTIOASO4 (KTA) HAVE BEEN SHOWN TO HAVE SUPERIOR TRANSMISSION IN THIS OPTICAL REGION, HOWEVER, THE PRESENCE OF… more
Abstract:Phase I will study tailoring the refractive index elliposoid of KTP to permit Type II phase matching at wavelengths shorter than 900nm, thereby permitting the SHG of laser diodes and Ti:Al2O3 solid state lasers. The system of solid solutions from mixing KTP with CsTiOPO4 will be studied and crystals… more
Abstract:THE HIGH TEMPERATURE SOLUTION (HTS) METHOD WILL BE USED TO PRODUCE CRYSTALS OF Li6Y(BO3)3 DOPED WITH Nd+3 FOR SOLID STATE LASER APPLICATIONS. A SUITABLE SOLVENT SYSTEM BASED ON LiF-LiBO3 WILL BE DEVELOPED TO GIVE OPTIMUM SIZE CRYSTALS. THE EFFECT OF Nd+3 CONCENTRATION ON CRYSTAL GROWTH AND LASER… more
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