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Chapter and Conference Paper
Development of Laser Wavelength Conversion Devices for Selective Ablation of Dental Caries
From the direct measurement of the onset energy density of the photoablation from 460 nm to 600 nm, it is found that wavelength between 520 nm to 560 nm has the best ablation selectivity. With the variations o...
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Article
Characterization of in-situ terahertz detection by optical interaction in a periodically poled stoichiometric lithium tantalate nonlinear crystal
Terahertz waves are generated using a femtosecond laser pulse in a periodically poled stoichiometric lithium tantalate crystal and simultaneously detected via a non-collinear optical parametric interaction ins...
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Article
Open AccessMorphological and SERS Properties of Silver Nanorod Array Films Fabricated by Oblique Thermal Evaporation at Various Substrate Temperatures
Aligned silver nanorod (AgNR) array films were fabricated by oblique thermal evaporation. The substrate temperature during evaporation was varied from 10 to 100 °C using a home-built water cooling system. Depo...
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Article
Study of an optical device based on a quasi-phase-matching method for speckle noise reduction for laser display
We report on quasi-phase-matched devices design of a red, green and blue (RGB) laser source based on second harmonic generation by using a novel apodized step-chirped grating (ASCG) made from various nonlinear...
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Article
Open AccessAll-optical THz wave switching based on CH3NH3PbI3 perovskites
Hybrid structures of silicon with organic–inorganic perovskites are proposed for optically controllable switching of terahertz (THz) waves over a broad spectral range from 0.2 to 2THz. A 532-nm external laser ...
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Article
Terahertz generation in quasi-phase-matching structures
Quasi-phase-matching (QPM) technology is considered one of the efficient ways to generate a coherent narrowband terahertz (THz) source. This review addresses two main QPM structures, such as periodically poled...