Optical image-combiner OR gate and optical AND gate using beam fanning effect in BaTiO3 crystals

1994 ◽  
Vol 33 (12) ◽  
pp. 4033 ◽  
Author(s):  
Hon-Fai Yau
Keyword(s):  
Optical Image ◽  
Fanning Effect ◽  
Beam Fanning Effect ◽  
Or Gate

Optical Image Combination and Logic AND Operation Using Beam Fanning Effect

1994 ◽  
Vol 1 (1) ◽  
pp. 47-50 ◽  
Author(s):  
Hsiao-Yi LEE ◽  
Hon-Fai YAU ◽  
Peir-Jyh WANG
Keyword(s):  
Optical Image ◽  
Fanning Effect ◽  
Beam Fanning Effect

Beam fanning effect and image storage in Ce: KNSBN crystal

2007 ◽  
Vol 52 (8) ◽  
pp. 1024-1028
Author(s):  
PanLai Li ◽  
QingLin Guo ◽  
ZhiJun Wang ◽  
LiBin Pang ◽  
BaoLai Liang
Keyword(s):  
Image Storage ◽  
Fanning Effect ◽  
Beam Fanning Effect

Photorefractive beam-fanning effect and self-pulsations in coated LiNbO_3 slabs

2001 ◽  
Vol 18 (7) ◽  
pp. 1741 ◽  
Author(s):  
Georgy Zartov ◽  
Tihomir Tenev ◽  
Krassimir Panajotov ◽  
Evgeny Popov ◽  
Rumiana Peyeva ◽  
...  
Keyword(s):  
Fanning Effect ◽  
Beam Fanning Effect

Incoherent-to-coherent conversion by use of the photorefractive beam-fanning effect and amplification by two-wave coupling in a photorefractive Ba_1-xSr_xTiO_3 crystal

2001 ◽  
Vol 40 (5) ◽  
pp. 687
Author(s):  
Yishen Qiu ◽  
Zhiqiang Zheng ◽  
Tuansun Lu ◽  
Wenchai Huang ◽  
J. Zhuang ◽  
...  
Keyword(s):  
Wave Coupling ◽  
Fanning Effect ◽  
Beam Fanning Effect

Photorefractive Color Converter Making Use of Beam Fanning Effect

1994 ◽  
Vol 33 (Part 2, No. 1B) ◽  
pp. L116-L118 ◽  
Author(s):  
Hsiao-Yi Lee ◽  
Hon-Fai Yau ◽  
Sha-Wei Wang
Keyword(s):  
Fanning Effect ◽  
Beam Fanning Effect ◽  
Color Converter

Registration and Fusion of UAV LiDAR System Sequence Images and Laser Point Clouds

2020 ◽  
Author(s):  
Jiayong Yu ◽  
Longchen Ma ◽  
Maoyi Tian, ◽  
Xiushan Lu
Keyword(s):  
Point Cloud ◽  
Image Data ◽  
Point Clouds ◽  
Optical Image ◽  
Point Cloud Data ◽  
Feature Points ◽  
Lidar System ◽  
Registration Accuracy ◽  
Cloud Data ◽  
Intensity Image

The unmanned aerial vehicle (UAV)-mounted mobile LiDAR system (ULS) is widely used for geomatics owing to its efficient data acquisition and convenient operation. However, due to limited carrying capacity of a UAV, sensors integrated in the ULS should be small and lightweight, which results in decrease in the density of the collected scanning points. This affects registration between image data and point cloud data. To address this issue, the authors propose a method for registering and fusing ULS sequence images and laser point clouds, wherein they convert the problem of registering point cloud data and image data into a problem of matching feature points between the two images. First, a point cloud is selected to produce an intensity image. Subsequently, the corresponding feature points of the intensity image and the optical image are matched, and exterior orientation parameters are solved using a collinear equation based on image position and orientation. Finally, the sequence images are fused with the laser point cloud, based on the Global Navigation Satellite System (GNSS) time index of the optical image, to generate a true color point cloud. The experimental results show the higher registration accuracy and fusion speed of the proposed method, thereby demonstrating its accuracy and effectiveness.

VIS-NIR LED Illumination in Backside Circuit Edit and Optical Probing Applications

2012 ◽  
Author(s):  
Shida Tan ◽  
Richard H. Livengood ◽  
Dane Scott ◽  
Roy Hallstein ◽  
Pat Pardy ◽  
...  
Keyword(s):  
High Resolution ◽  
Image Quality ◽  
Optical Imaging ◽  
Narrow Band ◽  
Light Emitting Diode ◽  
Air Gap ◽  
Optical Image ◽  
Proof Of Concept ◽  
Light Emitting ◽  
Optical Probing

Abstract High resolution optical imaging is critical in assisting backside circuit edit (CE) and optical probing navigation. In this paper, we demonstrated improved optical image quality using VIS-NIR narrow band light emitting diode (LED) illumination in various FIB and optical probing platforms. The proof of concept was demonstrated with both common non-contact air gap lenses and solid immersion lenses (SIL).

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