Zobrazeno 1 - 10
of 169
pro vyhledávání: '"H. P. Urbach"'
Autor:
J. Chang, J. W. N. Los, J. O. Tenorio-Pearl, N. Noordzij, R. Gourgues, A. Guardiani, J. R. Zichi, S. F. Pereira, H. P. Urbach, V. Zwiller, S. N. Dorenbos, I. Esmaeil Zadeh
Publikováno v:
APL Photonics, Vol 6, Iss 3, Pp 036114-036114-8 (2021)
Single photon detectors are indispensable tools in optics, from fundamental measurements to quantum information processing. The ability of superconducting nanowire single photon detectors (SNSPDs) to detect single photons with unprecedented efficienc
Externí odkaz:
https://doaj.org/article/9683c690d4e54bb9924d4a4ce1748608
Publikováno v:
Physical Review Research, Vol 2, Iss 1, p 013308 (2020)
Electromagnetic scattering is the main phenomenon behind all optical measurement methods where one aims to retrieve the shape or physical properties of an unknown object by measuring how it scatters an incident optical field. Such an inverse problem
Externí odkaz:
https://doaj.org/article/c7235ca94b6b46dea1b6859dc5e010bf
Autor:
Pereira, H. P. Urbach S. F.
Closed formulas are derived for the field in the focal region of a diffraction limited lens, such that the electric field component in a given direction at the focal point is larger than that of all other focused fields with the same power in the ent
Externí odkaz:
http://arxiv.org/abs/0812.3506
Publikováno v:
AIP Advances, Vol 8, Iss 11, Pp 115224-115224-7 (2018)
A technique to create aspheric surface shapes on commercially available electrowetting liquid lenses is demonstrated. Based on a previously published surface oscillation model a technique using a Hankel transform is proposed and tested experimentally
Externí odkaz:
https://doaj.org/article/fee6b7e7132543459f97501608907908
Autor:
Xianyou Wang, Xiaocong Yuan, Xiujie Dou, H. P. Urbach, Michael G. Somekh, Changjun Min, Yuquan Zhang
Publikováno v:
Light: Science & Applications, Vol 10, Iss 1, Pp 1-41 (2021)
Light, Science & Applications
Light, Science & Applications
Optical tweezers and associated manipulation tools in the far field have had a major impact on scientific and engineering research by offering precise manipulation of small objects. More recently, the possibility of performing manipulation with surfa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d035675c2ef6b03c0cb9600f29fd5584
https://doaj.org/article/1aa58a1c66e24bf98950112d70b090f5
https://doaj.org/article/1aa58a1c66e24bf98950112d70b090f5
Autor:
Zhenwei Xie, Guangyuan Si, Jiao Lin, Changjun Min, Dapeng Wang, Ting Lei, Yuquan Zhang, H. P. Urbach, Yu Jiahao, Xianyou Wang, Xiaocong Yuan, Yanan Fu
Publikováno v:
Nanoscale. 11:18303-18310
In recent years, light beams containing phase or polarization singularities, such as optical vortices (OVs) and cylindrical vector beams (CVBs), have contributed to significant applications including optical orbital angular momentum (OAM) communicati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ba91f27c4cccd09d294958bcd40b211b
https://doi.org/10.1039/c9nr05811g
https://doi.org/10.1039/c9nr05811g
Publikováno v:
Quantum and Nonlinear Optics VII.
Optical tweezers have found applications in many areas, the nonlinear effects play a significant role in femtosecond laser trappings. Here, we demonstrated that the traps are determined by the longitudinal electric field component due to the Kerr eff
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7d7ab866acd76d415ef9325251c2cc97
https://doi.org/10.1117/12.2573822
https://doi.org/10.1117/12.2573822
Publikováno v:
Physical Review Applied, 14(1)
We introduce an optimal metagrating design for transverse-position metrology in presence of photon shot noise. The proposed working principle is closely related to the formation of a phase vortex in the diffraction orders in the parameter space. Usin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dca39bcd21cbe103cc23e7ec1a0a1d21
https://doi.org/10.1103/physrevapplied.14.014026
https://doi.org/10.1103/physrevapplied.14.014026
Autor:
H. P. Urbach, Stefan Witte, Wim M. J. Coene, A. C. C. de Beurs, G. S. M. Jansen, A. P. Konijnenberg
Publikováno v:
Konijnenberg, A P, De Beurs, A C C, Jansen, G S M, Urbach, H P, Witte, S & Coene, W M J 2020, ' Phase retrieval algorithms for lensless imaging using diffractive shearing interferometry ', Journal of the Optical Society of America A: Optics and Image Science, and Vision, vol. 37, no. 6, pp. 914-924 . https://doi.org/10.1364/JOSAA.389791
Journal of the Optical Society of America A: Optics and Image Science, and Vision, 37(6), 914-924. The Optical Society
Journal of the Optical Society of America A: Optics and Image Science, and Vision, 37(6), 914-924. The Optical Society
Diffractive shearing interferometry (DSI) is a method that has recently been developed to perform lensless imaging using extreme ultraviolet radiation generated by high-harmonic generation. In this paper, we investigate the uniqueness of the DSI solu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9432f732eafa1a12f59d410641d9a06b
https://pubmed.ncbi.nlm.nih.gov/32543591
https://pubmed.ncbi.nlm.nih.gov/32543591
Publikováno v:
Optics Express, 28(14)
Improving the image quality of small particles is a classic problem and especially challenging when the distance between particles are below the optical diffraction limit. We propose a imaging system illuminated with radially polarized light combined
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::88112fb70494377327010b5caf4541d4
https://doi.org/10.1364/oe.390602
https://doi.org/10.1364/oe.390602