Results 211 to 220 of about 155,077 (262)
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Japanese Journal of Applied Physics, 1990
A novel optoelectronic logic operation technique using a beam scanning laser diode is proposed. This technique realizes fundamental logic operation gates and a spatial encoder with simple configurations.
Hideo Itoh +4 more
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A novel optoelectronic logic operation technique using a beam scanning laser diode is proposed. This technique realizes fundamental logic operation gates and a spatial encoder with simple configurations.
Hideo Itoh +4 more
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Beam Scanning Metasurface Antennas
2018 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting, 2018Metasurface (MTS)antennas have been shown to be a versatile class of planar antenna. In particular, they allow for beam shaping and pattern control through the modulation of the boundary conditions, while keeping unchanged the overall antenna structure. This feature makes them suitable for dynamic reconfiguration.
Pavone S. C. +4 more
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Radiation Effects, 1979
Abstract A discussion of electrostatic scanning systems is given with respect to mechanical scanning, uniformity and current capabilities as they relate to ion implanters. Equations for the degradation of uniformity due to wafer tilt. misalignment and changing beam size are presented.
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Abstract A discussion of electrostatic scanning systems is given with respect to mechanical scanning, uniformity and current capabilities as they relate to ion implanters. Equations for the degradation of uniformity due to wafer tilt. misalignment and changing beam size are presented.
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SPIE Proceedings, 2008
A projector with a height of 7 mm has been developed. The projector uses a two dimensional MEMS, a red and blue diode laser and a second harmonic green laser. This projector module is able to display images with a WVGA resolution while consuming 1.5 W.
Maarten Niesten +2 more
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A projector with a height of 7 mm has been developed. The projector uses a two dimensional MEMS, a red and blue diode laser and a second harmonic green laser. This projector module is able to display images with a WVGA resolution while consuming 1.5 W.
Maarten Niesten +2 more
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Beam alignment for scanning beam interference lithography
Journal of Vacuum Science & Technology B: Microelectronics and Nanometer Structures Processing, Measurement, and Phenomena, 2002By interfering two small diameter Gaussian laser beams, scanning beam interference lithography (SBIL) is capable of patterning linear gratings and grids in resist while controlling their spatial phase distortions to the nanometer level. Our tool has a patterning area that is up to 300 mm in diameter.
Carl G. Chen +5 more
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1972
Publisher Summary This chapter provides an overview of electron beam scanning. A considerable advance in electron-tube design was made in the development of the all-electrostatic vidicon, and in the subsequent variations of its electron beam system for smaller vidicon and the printicon.
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Publisher Summary This chapter provides an overview of electron beam scanning. A considerable advance in electron-tube design was made in the development of the all-electrostatic vidicon, and in the subsequent variations of its electron beam system for smaller vidicon and the printicon.
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Treatment planning for scanned ion beams
Radiotherapy and Oncology, 2004Since 1997 a radiotherapy unit using fast carbon ions is operational at GSI. An intensity-controlled magnetic raster scanner together with a synchrotron allowing fast energy variation enable a unique method of purely active dose shaping in three dimensions.
M, Krämer +8 more
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Single-beam differential z-scan technique
Applied Optics, 2007We report a single-beam, differential z-scan technique with improved sensitivity for the determination of nonlinear absorption and refraction of materials. A sample is scanned in the direction of beam propagation as usual, but, in addition, its longitudinal position is dithered, producing a detector signal proportional to the spatial derivative of only
Jean-Michel, Ménard +3 more
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Surface Feature Reconstruction Using Scanning Beams
Proceedings of European Meeting on Lasers and Electro-Optics, 1996This work presents an alternative to imaging investigation methods for structures with details smaller than the diffraction limit. We describe an optical setup capable of sampling the space and the spatial frequency domain of the target. The spatial information is achieved by monitoring the scanning process, and the frequency data is measured in the ...
Michael Friedmann +2 more
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Moiré topography by slit beam scanning
Applied Optics, 1992A new method of moiré topography is suggested in which a slit beam is used in a scanning mode to generate moiré fringes. One remarkable feature of this method is that, as opposed to existing shadow and projection types, height differences between two consecutive fringes become constant so that absolute fringe orders need not be identified.
Kim, Seung-Woo, Park, Hyun-Goo
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