Single-chip DMD-based hybrid holographic beam steering for lidar

2021 ◽  
Author(s):  
Chuan Luo ◽  
Brandon Hellman ◽  
Guanghao Chen ◽  
Joshua Rodriguez ◽  
Charles Perkins ◽  
...  
Keyword(s):  
Beam Steering ◽  
Single Chip

scholarly journals Vertically integrated diffractive gratings on photonic crystal surface emitting lasers

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Lih-Ren Chen ◽  
Kuo-Bin Hong ◽  
Hsiu-Ling Chen ◽  
Kuan-Chih Huang ◽  
Tien-Chang Lu
Keyword(s):  
Photonic Crystal ◽  
Crystal Surface ◽  
Beam Steering ◽  
Azimuthal Angle ◽  
Three Dimensional ◽  
Grating Period ◽  
Single Chip ◽  
Output Beam ◽  
Optical Elements ◽  
Emitting Lasers

AbstractWe designed and fabricated a photonic crystal surface emitting laser (PCSEL) with vertically integrated diffractive optical elements on their top to study the mechanism of static beam steering on a single chip. The deflected output beam by the self-formed periodic ITO cladding layer of the PCSEL can be further steered by changing the grating period and azimuthal angle of the diffractive gratings relative to the photonic crystal. Through the analysis of photonic band structure and lasing characteristics, the periodic ITO structure is coupled to the photonic crystal band, whereas the integrated grating serves the diffractive function only. The findings pave the way for the design of PCSELs enabling single or multiple output beam with varying direction capability. This type of laser is regarded as an ideal light source for various applications, such as light detection and ranging and three-dimensional sensing systems.

scholarly journals Single chip lidar with discrete beam steering by digital micromirror device

2017 ◽  
Vol 25 (13) ◽  
pp. 14732 ◽  
Author(s):  
Braden Smith ◽  
Brandon Hellman ◽  
Adley Gin ◽  
Alonzo Espinoza ◽  
Yuzuru Takashima
Keyword(s):  
Beam Steering ◽  
Digital Micromirror Device ◽  
Single Chip

scholarly journals Beam steering by digital micro-mirror device for multi-beam and single-chip lidar

2018 ◽  
Author(s):  
Joshua M. Rodriguez ◽  
Eunmo Kang ◽  
Brandon Hellman ◽  
Guanghao Chen ◽  
Braden Smith ◽  
...  
Keyword(s):  
Beam Steering ◽  
Single Chip

scholarly journals Single Chip LIDAR with Discrete Beam Steering by Digital Micromirror Device

2017 ◽  
Author(s):  
Braden Smith ◽  
Brandon Hellman ◽  
Adley Gin ◽  
Alonzo Espinoza ◽  
Yuzuru Takashima
Keyword(s):  
Beam Steering ◽  
Digital Micromirror Device ◽  
Single Chip

scholarly journals Multi-beam and single-chip LIDAR with discrete beam steering by digital micromirror device

2018 ◽  
Author(s):  
Joshua Rodriguez ◽  
Braden Smith ◽  
Brandon Hellman ◽  
Adley Gin ◽  
Yuzuru Takashima ◽  
...  
Keyword(s):  
Beam Steering ◽  
Digital Micromirror Device ◽  
Single Chip

scholarly journals A single-chip multi-beam steering optical phased array: design rules and simulations

2021 ◽  
Vol 29 (5) ◽  
pp. 7049
Author(s):  
Yaqi Liu ◽  
Zhibiao Hao ◽  
Lai Wang ◽  
Bing Xiong ◽  
Changzheng Sun ◽  
...  
Keyword(s):  
Phased Array ◽  
Beam Steering ◽  
Single Chip ◽  
Design Rules ◽  
Array Design ◽  
Optical Phased Array

scholarly journals Single-chip holographic beam steering for lidar by a digital micromirror device with angular and spatial hybrid multiplexing

2020 ◽  
Vol 28 (15) ◽  
pp. 21993 ◽  
Author(s):  
Brandon Hellman ◽  
Chuan Luo ◽  
Guanghao Chen ◽  
Joshua Rodriguez ◽  
Charles Perkins ◽  
...  
Keyword(s):  
Beam Steering ◽  
Digital Micromirror Device ◽  
Single Chip

Symmetric-pair antennas for beam steering, direction finding or isotropic-reception gain

1991 ◽  
Vol 138 (4) ◽  
pp. 368 ◽  
Author(s):  
R. Benjamin ◽  
W. Titze ◽  
P.V. Brennan ◽  
H.D. Griffiths
Keyword(s):  
Beam Steering ◽  
Direction Finding ◽  
Symmetric Pair

Electromagnetically Driven 2-axis Optical Beam Steering MEMS Mirror and Its Dependence of Actuation on Magnetic Field

2010 ◽  
Vol 130 (4) ◽  
pp. 107-112 ◽  
Author(s):  
Yoshiyuki Watanabe ◽  
Yutaka Abe ◽  
Shinnosuke Iwamatsu ◽  
Seiya Kobayashi ◽  
Yoshiyuki Takahashi ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Beam Steering ◽  
Optical Beam

Low-Dielectric-Constant Materials for ULSI Interlayer-Dielectric Applications

MRS Bulletin ◽  
1997 ◽  
Vol 22 (10) ◽  
pp. 19-27 ◽  
Author(s):  
Wei William Lee ◽  
Paul S. Ho
Keyword(s):  
Packing Density ◽  
Propagation Delay ◽  
Single Chip ◽  
Crosstalk Noise ◽  
Metal Line ◽  
Total Delay ◽  
Interlayer Dielectric ◽  
Low Dielectric ◽  
Interconnect Delay ◽  
Interconnect Technology

Continuing improvement of microprocessor performance historically involves a decrease in the device size. This allows greater device speed, an increase in device packing density, and an increase in the number of functions that can reside on a single chip. However higher packing density requires a much larger increase in the number of interconnects. This has led to an increase in the number of wiring levels and a reduction in the wiring pitch (sum of the metal line width and the spacing between the metal lines) to increase the wiring density. The problem with this approach is that—as device dimensions shrink to less than 0.25 μm (transistor gate length)—propagation delay, crosstalk noise, and power dissipation due to resistance-capacitance (RC) coupling become significant due to increased wiring capacitance, especially interline capacitance between the metal lines on the same metal level. The smaller line dimensions increase the resistivity (R) of the metal lines, and the narrower interline spacing increases the capacitance (C) between the lines. Thus although the speed of the device will increase as the feature size decreases, the interconnect delay becomes the major fraction of the total delay and limits improvement in device performance.To address these problems, new materials for use as metal lines and interlayer dielectrics (ILD) as well as alternative architectures have been proposed to replace the current Al(Cu) and SiO2 interconnect technology.

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