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Linear and nonlinear optical properties of KDP crystals with incorporated Al2O3?nH2O nanoparticles
Affiliation:1. SSI “Institute for Single Crystals” NASU, Kharkov 61001, Ukraine;2. Institute of Physics NASU, Kyiv 03680, Ukraine;1. Crystal Growth Laboratory, Department of Physics, Milliya Arts, Science & Management Science College, Beed 431122, Maharashtra, India;2. Intelligent Material Research Laboratory, Department of Physics, Dr. Babasaheb Ambedkar Marathwada University, Aurangabad 431005,Maharashtra, India;3. Department of Physics, Sant Gadge Baba Amravati University, Amravati 444602, Maharashtra, India;1. Robotics Institute, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai, China;2. College of Intelligence Science, National University of Defense Technology, Changsha, China;1. State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin, 150001, China;2. Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang, 621900, China;3. Key Laboratory of Testing Technology for Manufacturing Process, Southwest University of Science and Technology, Mianyang, 621010, China;1. RUSA Centre for Advanced Sensor Technology, Department of Physics, Dr. Babasaheb Ambedkar Marathwada University, Aurangabad, 431004, Maharashtra, India;2. Prof Ram Meghe College of Engineering and Management, Amravati, 444701, Maharashtra, India;3. Department of Physics and Electronics, Maulana Azad College of Arts, Science and Commerce, Dr. Rafiq Zakaria Campus-I, Aurangabad, 431001, Maharashtra, India;4. Department of Physics, College of Science, King Khalid University, P.O. Box 9004, Abha, 61413, Saudi Arabia;5. Crystal Growth Laboratory, Department of Physics, Milliya Arts, Science and Management Science College, Beed, 431122, Maharashtra, India;1. Key Laboratory of Materials for High Power Laser, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China;2. University of Chinese Academy of Sciences, Beijing 100049, China
Abstract:Optical and nonlinear optical properties of a novel composite system based on KDP single crystals with embedded nanoparticles of nanostructured oxyhydroxide of aluminum (Al2O3·nH2O, NOA), were studied. KDP crystals with NOA nanoparticles (KDP:NOA) possess high optical quality and homogeneity. Optical spectroscopy showed the presence of an absorption band at 270 nm caused by NOA nanoparticles incorporated in the KDP matrix. There was observed an enhancement of nonlinear refractive index and inversion of its sign in KDP:NOA crystals in comparison with nominally pure KDP crystals under excitation of picosecond laser pulses. The obtained results demonstrate that KDP:NOA is a promising composite material for optoelectronics and nonlinear optics.
Keywords:Crystal growth  Nonlinear optical crystals  Nanoparticles  Transmittance  Self-action of laser pulses
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