scholarly journals Principle of beam generation in on-chip 2D beam pattern projecting lasers

2018 ◽  
Vol 26 (8) ◽  
pp. 10787 ◽  
Author(s):  
Yu Takiguchi ◽  
Kazuyoshi Hirose ◽  
Takahiro Sugiyama ◽  
Yoshiro Nomoto ◽  
Soh Uenoyama ◽  
...  
Keyword(s):  
Beam Pattern ◽  
Beam Generation ◽  
On Chip

Zero-order-free 2D beam pattern projecting on-chip lasers

2020 ◽  
Author(s):  
Kazuyoshi Hirose ◽  
Yoshitaka Kurosaka ◽  
Yu Takiguchi ◽  
Takahiro Sugiyama ◽  
Soh Uenoyama ◽  
...  
Keyword(s):  
Zero Order ◽  
Beam Pattern ◽  
On Chip

scholarly journals Removal of surface-normal spot beam from on-chip 2D beam pattern projecting lasers

2018 ◽  
Vol 26 (23) ◽  
pp. 29854 ◽  
Author(s):  
Kazuyoshi Hirose ◽  
Yu Takiguchi ◽  
Takahiro Sugiyama ◽  
Yoshiro Nomoto ◽  
Soh Uenoyama ◽  
...  
Keyword(s):  
Beam Pattern ◽  
Surface Normal ◽  
On Chip ◽  
Spot Beam

scholarly journals Recent advances on optical vortex generation

Nanophotonics ◽  
2018 ◽  
Vol 7 (9) ◽  
pp. 1533-1556 ◽  
Author(s):  
Xuewen Wang ◽  
Zhongquan Nie ◽  
Yao Liang ◽  
Jian Wang ◽  
Tao Li ◽  
...  
Keyword(s):  
Data Processing ◽  
Recent Progress ◽  
Optical Vortex ◽  
Advanced Technology ◽  
Vortex Beam ◽  
Vortex Generation ◽  
Information Encoding ◽  
Beam Generation ◽  
Vortex Beams ◽  
On Chip

AbstractThis article reviews recent progress leading to the generation of optical vortex beams. After introducing the basics of optical vortex beams and their promising applications, we summarized different approaches for optical vortex generation by discrete components and laser cavities. We place particular emphasis on the recent development of vortex generation by the planar phase plates, which are able to engineer a spiral phasefront via dynamic or geometric phase in nanoscale, and highlight the independent operation of these two different phases which leads to a multifunctional optical vortex beam generation and independent spin-orbit interaction. We also introduced the recent progress on vortex lasing, including vortex beam generation from the output of bulk lasers by modification of conventional laser cavities with phase elements and from integrated on-chip microlasers. Similar approaches are also applied to generate fractional vortex beams carrying fractional topological charge. The advanced technology and approaches on design and nanofabrications enable multiple vortex beams generation from a single device via multiplexing, multicasting, and vortex array, open up opportunities for applications on data processing, information encoding/decoding, communication and parallel data processing, and micromanipulations.

Beam Pattern Projecting On-Chip Lasers at Visible Wavelength

2019 ◽  
Author(s):  
Yoshitaka Kurosaka ◽  
Kazuyoshi Hirose ◽  
Akio Ito ◽  
Masahiro Hitaka ◽  
Akira Higuchi ◽  
...  
Keyword(s):  
Beam Pattern ◽  
Visible Wavelength ◽  
On Chip

Asymmetric beam generation in an on-chip 2D-pattern-projecting lasers

2018 ◽  
Author(s):  
Kazuyoshi Hirose ◽  
Yoshitaka Kurosaka ◽  
Yu Takiguchi ◽  
Takahiro Sugiyama ◽  
Yoshiro Nomoto ◽  
...  
Keyword(s):  
Beam Generation ◽  
2D Pattern ◽  
On Chip

scholarly journals On-chip switchable radially and azimuthally polarized vortex beam generation

2018 ◽  
Vol 43 (6) ◽  
pp. 1263 ◽  
Author(s):  
Zengkai Shao ◽  
Jiangbo Zhu ◽  
Yanfeng Zhang ◽  
Yujie Chen ◽  
Siyuan Yu
Keyword(s):  
Vortex Beam ◽  
Beam Generation ◽  
On Chip

Gut microbiome a promising target for management of respiratory diseases

2020 ◽  
Vol 477 (14) ◽  
pp. 2679-2696
Author(s):  
Riddhi Trivedi ◽  
Kalyani Barve
Keyword(s):  
Respiratory Diseases ◽  
New Technology ◽  
Bacterial Flora ◽  
Systemic Circulation ◽  
The Body ◽  
Lung Pathology ◽  
Promising Target ◽  
Current Therapies ◽  
Intestinal Microbial Flora ◽  
On Chip

The intestinal microbial flora has risen to be one of the important etiological factors in the development of diseases like colorectal cancer, obesity, diabetes, inflammatory bowel disease, anxiety and Parkinson's. The emergence of the association between bacterial flora and lungs led to the discovery of the gut–lung axis. Dysbiosis of several species of colonic bacteria such as Firmicutes and Bacteroidetes and transfer of these bacteria from gut to lungs via lymphatic and systemic circulation are associated with several respiratory diseases such as lung cancer, asthma, tuberculosis, cystic fibrosis, etc. Current therapies for dysbiosis include use of probiotics, prebiotics and synbiotics to restore the balance between various species of beneficial bacteria. Various approaches like nanotechnology and microencapsulation have been explored to increase the permeability and viability of probiotics in the body. The need of the day is comprehensive study of mechanisms behind dysbiosis, translocation of microbiota from gut to lung through various channels and new technology for evaluating treatment to correct this dysbiosis which in turn can be used to manage various respiratory diseases. Microfluidics and organ on chip model are emerging technologies that can satisfy these needs. This review gives an overview of colonic commensals in lung pathology and novel systems that help in alleviating symptoms of lung diseases. We have also hypothesized new models to help in understanding bacterial pathways involved in the gut–lung axis as well as act as a futuristic approach in finding treatment of respiratory diseases caused by dysbiosis.

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