Nonmechanical three-dimensional beam steering using liquid lens and liquid prism

2020 ◽  
Author(s):  
Junsik Lee ◽  
Jooho Lee ◽  
Gyu Suk Jung ◽  
Yong Hyub Won
Keyword(s):  
Beam Steering ◽  
Three Dimensional ◽  
Liquid Lens

scholarly journals Nonmechanical three-dimensional beam steering using electrowetting-based liquid lens and liquid prism

2019 ◽  
Vol 27 (25) ◽  
pp. 36757 ◽  
Author(s):  
Junsik Lee ◽  
Jooho Lee ◽  
Yong Hyub Won
Keyword(s):  
Beam Steering ◽  
Three Dimensional ◽  
Liquid Lens

Laser Beam Steering Along Three-Dimensional Paths

2018 ◽  
Vol 23 (3) ◽  
pp. 1148-1158 ◽  
Author(s):  
Brahim Tamadazte ◽  
Rupert Renevier ◽  
Jean-Antoine Seon ◽  
Andrey V. Kudryavtsev ◽  
Nicolas Andreff
Keyword(s):  
Laser Beam ◽  
Beam Steering ◽  
Three Dimensional

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.

Wide-angle, high-resolution three-dimensional (3D) imaging using non-mechanical beam steering

2021 ◽  
Author(s):  
Christopher L. Hoy ◽  
Jay Stockley ◽  
Kelly Kluttz ◽  
Doug McKnight ◽  
Lance Hosting ◽  
...  
Keyword(s):  
High Resolution ◽  
3D Imaging ◽  
Beam Steering ◽  
Three Dimensional ◽  
Wide Angle

scholarly journals Spatiotemporal light control with frequency-gradient metasurfaces

Science ◽  
2019 ◽  
Vol 365 (6451) ◽  
pp. 374-377 ◽  
Author(s):  
Amr M. Shaltout ◽  
Konstantinos G. Lagoudakis ◽  
Jorik van de Groep ◽  
Soo Jin Kim ◽  
Jelena Vučković ◽  
...  
Keyword(s):  
Frequency Comb ◽  
Beam Steering ◽  
Three Dimensional ◽  
Optical Control ◽  
Steering Angle ◽  
Experimental Realization ◽  
Phase Gradient ◽  
Power Efficient ◽  
On Chip ◽  
Frequency Gradient

The capability of on-chip wavefront modulation has the potential to revolutionize many optical device technologies. However, the realization of power-efficient phase-gradient metasurfaces that offer full-phase modulation (0 to 2π) and high operation speeds remains elusive. We present an approach to continuously steer light that is based on creating a virtual frequency-gradient metasurface by combining a passive metasurface with an advanced frequency-comb source. Spatiotemporal redirection of light naturally occurs as optical phase-fronts reorient at a speed controlled by the frequency gradient across the virtual metasurface. An experimental realization of laser beam steering with a continuously changing steering angle is demonstrated with a single metasurface over an angle of 25° in just 8 picoseconds. This work can support integrated-on-chip solutions for spatiotemporal optical control, directly affecting emerging applications such as solid-state light detection and ranging (LIDAR), three-dimensional imaging, and augmented or virtual systems.

High Resolution Solid State Acoustic Imaging for Advanced Well Integrity and Deformation Assessments in Conventional and Unconventional Wells

2021 ◽  
Author(s):  
Thomas Littleford ◽  
Anthony Battistel ◽  
Greer Simpson ◽  
Kacper Wardynski
Keyword(s):  
Solid State ◽  
High Resolution ◽  
Wall Thickness ◽  
Beam Steering ◽  
Three Dimensional ◽  
Field Studies ◽  
Acoustic Imaging ◽  
Single Element ◽  
Imaging Technology ◽  
Well Integrity

Abstract An advanced high-resolution acoustic imaging technology was deployed for well integrity and deformation assessments in both vertical and horizontal wells. This high frequency acoustic tool collected three-dimensional data quantifying deformation and wall thickness with resolution unobtainable by existing multi-finger caliper, magnetic flux leakage, and rotating single element ultrasonic systems. Several novel imaging methods are enabled by the high number of transducers (up to 512) on the imaging probe. These methods, including beam forming, beam steering and semi-stochastic multipulse imaging, are outlined and discussed in this paper. In addition, multiple types of standardized visualizations enabled by this high-resolution 3D data capture tool are introduced and examples of each are shown. Lab qualification and imagery generated by the high-resolution solid-state imaging technology, when applied to various precision machined geometric anomalies, are presented. In addition to lab validation results, several field studies are showcased including assessments of ovalized casing, complex downhole corrosion, and isolated minor pitting. Leak paths, splits, and damaged regions within threaded casing collars were also identified, imaged, and quantified using the acoustic technology. Until now, these collar regions have been very difficult to image using legacy downhole tools due to fundamental limitations at the threaded connection geometry. Lastly, various downhole completion equipment case studies are presented showcasing several applications of acoustic imaging used to validate the set-position or condition of specialty downhole equipment. This paper outlines the usage of the solid-state acoustic technology to generate three dimensional geometry and wall thickness datasets with sub-millimetric resolution, providing operators with a holistic and actionable assessment of their well integrity.

Beam Steering Control of Liquid Prism Array Based on Electrowetting-on-Dielectric in Three-Dimensional Space

2019 ◽  
Vol 56 (16) ◽  
pp. 162201 ◽  
Author(s):  
杨龙啸 Longxiao Yang ◽  
赵瑞 Rui Zhao ◽  
孔梅梅 Meimei Kong ◽  
陈陶 Tao Chen ◽  
关建飞 Jianfei Guan ◽  
...  
Keyword(s):  
Dimensional Space ◽  
Beam Steering ◽  
Three Dimensional ◽  
Steering Control ◽  
Electrowetting On Dielectric ◽  
Three Dimensional Space
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