Results 31 to 40 of about 334,082 (299)
Band-edge-induced Bragg diffraction in two-dimensional photonic crystals [PDF]
, 2006 Two-dimensional photonic crystals composed of two orthogonal volume diffraction gratings have been photogenerated in photopolymers. When the read beam is set at the Bragg angle, the diffraction efficiency of the transmission grating is strongly enhanced ...
Chevallier, Raymond +5 more
core +3 more sources
Measurement of Wafer Focus by Grating Shearing Interferometry
Applied Sciences, 2020 A method applied for improving the measurement precision and efficiency of wafer focusing in an optical lithography instrument (OLI) is introduced. Based on grating shearing interferometry, the defocus and tilt of the wafer are measured by testing the ...
Jian Wang, Song Hu, Xianchang Zhu
doaj +1 more source
Precision grating for measuring microscope lens distortions [PDF]
International Journal of Metrology and Quality Engineering, 2010 Microscopy is used in most technology processes where two-dimensional distributions, that are digital images of the shape and appearance of integrated circuit (IC) features, reveal important information.
Jiang L.
doaj +1 more source
Casimir interaction between a sphere and a grating
, 2015 We derive the explicit expression for the Casimir energy between a sphere and a 1D grating, in terms of the sphere and grating reflection matrices, and valid for arbitrary materials, sphere radius, and grating geometric parameters.
Antezza, Mauro +3 more
core +3 more sources
Theoretical Investigation on Microcavity Coupler for Terahertz Quantum-Well Infrared Photodetectors
IEEE Access, 2020 Resonant behaviors and absorption enhancement of metallic grating-dielectric-metal (GDM) microcavity are theoretically investigated. The GDM structure is treated as periodic unit cells of two serially-connected metal-dielectric-metal (MDM) and air ...
Xuguang Guo +5 more
doaj +1 more source
Combining front and back grating structures for broadband absorption enhancement in thin-film silicon solar cells [PDF]
, 2011 We investigate the possibilities of enhancing absorption in thin-film silicon solar cells with grating structures on the front ITO and back Ag contacts simultaneously.
Abass, Aimi +5 more
core +2 more sources
Temperature Monitoring in PIC Surface
PhotonicsIn this work we present the extended work of the previously proposed scheme for in-PIC temperature monitoring. This can be used in any photonic integrated circuitry platform, allowing simplified temperature monitoring and improved independence of the ...
Sushma Pandey +2 more
doaj +1 more source
Dosimetric study of the medical Agility grating system in radiotherapy of orbital lymphoma
Precision Radiation Oncology, 2019 Objective The spatial location of the orbital lymphoma target area is special; improving the quality of the orbital lymphoma plan and protecting the eye are important focus areas for doctors and physicists.
Shi Huifeng +4 more
doaj +1 more source
A Chirped Subwavelength Grating With Both Reflection and Transmission Focusing
IEEE Photonics Journal, 2013 A planar lens composed of a chirped subwavelength grating (CSG) structure with high numerical aperture (NA) was designed and analyzed in this paper. The reflectivity, transmission, and phase were calibrated as a function of the grating dimension using ...
Xiaomin Lv +7 more
doaj +1 more source
Interaction between luminance gratings and disparity gratings
Spatial Vision, 2004 It was shown from geometry and photographic measurement that the shading pattern for a sinusoidal corrugated surface of frequency f approximates to a luminance-defined grating of frequency f, 2f or f + 2f in specific relative phase. It was confirmed that a luminance grating modifies the appearance of a suprathreshold stereoscopic corrugated surface ...
Michael, Wright, Tim, Ledgeway
openaire +2 more sources