Results 11 to 20 of about 27,037 (263)
Measurement of Diffraction Loss in a Solid State Laser [PDF]
Applied Optics, 1969 The measurement of oscillation losses in solid state lasers has long been used as a method of evaluating the quality of the laser material. Most of these active loss measurements provide a measure of the total cavity loss, from which other losses such as mirror reflectivity losses must be subtracted to give a figure for the internal loss of the laser ...
Arnold, D.H., Hanna, D.C.
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Evaluating the applicability of a screen diffraction approximation to local volcano infrasound
Volcanica, 2021 Atmospheric acoustic waves from volcanoes at infrasonic frequencies (0.01–20 Hz) can be used to estimate source parameters for hazard modeling, but signals are often distorted by wavefield interactions with topography, even at local recording distances (
Sean Maher +4 more
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Diffraction mode selection in planar lasers with Bragg resonators [PDF]
ITM Web of Conferences, 2019 Using the coupled-wave approach supplemented by the quasioptical approximation, we investigate the possibilities of diffraction mode selection with respect to the transverse index in planar distributed-feedback lasers.
Ginzburg Naum +5 more
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Synthesis and characterizations of (Ba1-xCax)Ti4O9, 0 ≤ x ≤ 0.9 ceramics
Journal of Materials Research and Technology, 2021 Manufacturing of energy storage devices with good efficiency and fewer losses has been a distinct topic. A material with good dielectric properties and fewer energy losses is the basic demand of the electronic industry.
Asad Ali +7 more
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Ultra-low threshold lasing through phase front engineering via a metallic circular aperture
Nature Communications, 2022 Low threshold lasing is widely required, especially for portable systems. Here the authors design a circular subwavelength metallic aperture in a QCL to shape its phase front and control diffraction losses, which in turn allows a lower threshold ...
Zhixin Wang +4 more
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Data in Brief, 2021 In this data article, we present the spectroscopic structural data of the pottery samples collected from Petén Itzá, Guatemala. Detailed Fourier transmission infrared, powder X-ray diffraction, scanning electron microscopy coupled to electron dispersive ...
Kefa K. Onchoke +4 more
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Van Der Waals Materials for Subdiffractional Light Guidance
Photonics, 2022 Photonics is a natural next technological step after an era of electronics. However, the diffraction limit of light poses severe limitations on photonic elements and dictates their size.
Georgy Ermolaev +5 more
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International Journal of Antennas and Propagation, 2017 Applying propagation models with good accuracy is an essential issue for increasing the capacity and improving the coverage of cellular communication systems.
Ahmad S. Abdulrasool +2 more
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Rainfall and Diffraction Modeling for Millimeter-Wave Wireless Fixed Systems
IEEE Access, 2020 Rain attenuation is the main practical problem that confronts wireless signals specifically when it uses millimeter-waves for fifth-generation (5G) communication systems.
Zaid Ahmed Shamsan
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Properties of NGO 3% Silicon Steel Asymmetrically Cold Rolled [PDF]
Materials Research, 2015 The effects of asymmetric and conventional deformations and annealing on the microstructure of non-grain-oriented (NGO) 3 wt% silicon steel were analyzed by x-ray diffraction, optical microscopy and magnetometry.
Ramon Alves Botelho +3 more
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