Results 21 to 30 of about 55,400 (265)
A Dual-Band Guided-Laser Absorber Based on Silicon-Nickel Metasurface
Photonics, 2022 Metasurface absorbers are already used in many laser applications. To achieve laser stealth, a dual-band guided-laser absorber is presented in this paper. The absorber is composed of periodic silicon squares on a silicon film and a nickel layer.
Xinye Liao +5 more
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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
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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.
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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
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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
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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
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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
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Photonics, 2014 We designed and fabricated guided-mode resonance (GMR) gratings on indium-tin-oxide (ITO) thin film to generate a significantly enhanced local electric field for surface-enhanced Raman scattering (SERS) spectroscopy.
Jing Yang +7 more
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Birefringent optofluidic gratings
Optics Express, 2020 A set of parallel microfluidic channels behaving as a diffraction grating operating in the Raman-Nath regime has been fabricated and studied. The diffraction efficiency of such structure can be tuned by selecting a liquid with a particular refractive index and/or optical anisotropy.
Sergio Calixto +4 more
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PhotonicsPlasmonic- or metamaterial-based multi-narrowband perfect absorbers hold significant potential applications in filtering, photodetection, and spectroscopic sensing.
Yusheng Zhai, Weiji He, Qian Chen
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