Zobrazeno 1 - 10
of 197
pro vyhledávání: '"James R. Leger"'
Autor:
Peter A. Santi, Shane B. Johnson, Matthias Hillenbrand, Patrick Z. Grandpre, Tiffany J. Glass, James R. Leger
Publikováno v:
BioTechniques, Vol 46, Iss 4, Pp 287-294 (2009)
We report the development of a modular and optimized thin-sheet laser imaging microscope (TSLIM) for nondestructive optical sectioning of organisms and thick tissues such as the mouse cochlea, zebrafish brain/inner ear, and rat brain at a resolution
Externí odkaz:
https://doaj.org/article/0d846dfae47b4d4681a6f4e5afb71d71
Publikováno v:
IEEE Transactions on Terahertz Science and Technology. 12:489-498
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::234f168e05587bd0af794615b14b4681
https://doi.org/10.1109/tthz.2022.3173168
https://doi.org/10.1109/tthz.2022.3173168
Publikováno v:
Optics express. 30(23)
At THz frequencies, many building materials exhibit mirror-like reflectivity, greatly facilitating the 3D spatial location estimate of non-line-of-sight objects. Using a custom THz measurement setup that employs a high sensitivity room temperature TH
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::279c513dbb2529e243b617ec0eceb64a
https://pubmed.ncbi.nlm.nih.gov/36366655
https://pubmed.ncbi.nlm.nih.gov/36366655
Autor:
Glen Douglass, W. Minster Kunkel, Ali Ghoreyshi, Simon Gross, Michael J. Withford, James R. Leger
Publikováno v:
Optics Express. 30:40592
In this paper gradient-index beam shapers are fabricated using the ultrafast laser inscription method. This method enables the fabrication of two-dimensional refractive index profiles inside silica glass, resulting in highly robust and compact beam s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1b26d7ec513a83b8a6a71f3b24fe31fe
https://doi.org/10.1364/oe.471596
https://doi.org/10.1364/oe.471596
Autor:
James R. Leger, W. Minster Kunkel
Publikováno v:
IEEE Journal of Quantum Electronics. 55:1-8
A general ${N}$ -by- ${N}$ coupling matrix that provides lossless uniform feedback to all laser array elements is demonstrated in the analysis of a passive coherent beam combining resonator. The resonator contains a spatial filter that sends rejected
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::249946043cb538320a4299c1b04c4a3d
https://doi.org/10.1109/jqe.2019.2925372
https://doi.org/10.1109/jqe.2019.2925372
Autor:
W. Minster Kunkel, James R. Leger
Publikováno v:
Optics express. 28(21)
A numerical design method is demonstrated for gradient refractive index (GRIN) beam shapers embedded in a medium. The three-dimensional refractive index profile Δn(x, y, z) gradually changes the spatial characteristics of a beam during propagation.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::88c286e270f5081b64655831aa3fff0e
https://pubmed.ncbi.nlm.nih.gov/33115169
https://pubmed.ncbi.nlm.nih.gov/33115169
Autor:
James R. Leger
Publikováno v:
Laser Beam Shaping XX.
We outline a laser array beam forming concept that is capable of meeting the laser power requirements of Breakthrough Starshot, a concept aimed at propelling spacecraft to extremely high velocities via laser radiation pressure. Our laser beam forming
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f592aa0ba19407073c7eb95e0936c92f
https://doi.org/10.1117/12.2569134
https://doi.org/10.1117/12.2569134
Autor:
Takahiro Sasaki, James R. Leger
Publikováno v:
Journal of the Optical Society of America. A, Optics, image science, and vision. 37(4)
We investigate the utility of plenoptic data for extracting information from a scene where the light from objects in the scene is viewable only after scattering from a surface such as a wall. We derive the rigorous relationship between the object and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::af7715e8ffdcf8ed5e194566e46b1b5d
https://pubmed.ncbi.nlm.nih.gov/32400550
https://pubmed.ncbi.nlm.nih.gov/32400550
Publikováno v:
Journal of the Optical Society of America. A, Optics, image science, and vision. 37(4)
We present a methodology for recovering the perspective imagery of a non-line-of-sight scene based on plenoptic observations of indirect photons scattered from a homogeneous surface. Our framework segregates the visual contents observed along the sca
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::359e7e35ddd4576270c77f6a25ae7f23
https://pubmed.ncbi.nlm.nih.gov/32400527
https://pubmed.ncbi.nlm.nih.gov/32400527
Publikováno v:
Optics express. 28(2)
Self-phasing due to spatial mode selection in a two-element passively coupled fiber laser is studied. We find that the addition of a second supermode in a coupled resonator results in a 90% increase in the average output power and nearly π/2 radians
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::efd998d70dc3b1788b8a1812b61f0b2d
https://pubmed.ncbi.nlm.nih.gov/32121889
https://pubmed.ncbi.nlm.nih.gov/32121889