Zobrazeno 1 - 10
of 516
pro vyhledávání: '"Qiwen Zhan"'
Publikováno v:
Nature Communications, Vol 15, Iss 1, Pp 1-6 (2024)
Abstract Spatiotemporal structured light has opened up new avenues for optics and photonics. Current spatiotemporal manipulation of light mostly relies on phase-only devices such as liquid crystal spatial light modulators to generate spatiotemporal o
Externí odkaz:
https://doaj.org/article/3bb294e7ca7241299afb00d376af2d01
Publikováno v:
Communications Physics, Vol 7, Iss 1, Pp 1-6 (2024)
Abstract Control of topologies in structured light fields with multi-degrees of freedom integrates fundamental optical physics and topological invariance. Beyond the simple phase vortex, three-dimensional (3D) topological singularities and related no
Externí odkaz:
https://doaj.org/article/66d6a69c9068458dbd8d9f283f90ac5a
Publikováno v:
Nature Communications, Vol 15, Iss 1, Pp 1-10 (2024)
Abstract Optical spatiotemporal vortices with transverse photon orbital angular momentum (OAM) have recently become a focal point of research. In this work we theoretically and experimentally investigate optical spatiotemporal vortices with radial an
Externí odkaz:
https://doaj.org/article/a94a3ff6ac804b79ab8b51ac5e1f1204
Autor:
Junyong Zhang, Huaiyu Cui, Yuanyuan Liu, Xiuping Zhang, You Li, Dongdi Zhao, Yongpeng Zhao, Qiwen Zhan
Publikováno v:
PhotoniX, Vol 5, Iss 1, Pp 1-8 (2024)
Abstract Extreme ultraviolet (EUV) light is difficult to focus due to strong absorption of most materials. Photon sieves (PS), rather than Fresnel zone plates (FZP), can focus EUV to smaller spot and suppress the higher orders of secondary maxima by
Externí odkaz:
https://doaj.org/article/72c21200ed53425e82aa692ffd9e9bdc
Publikováno v:
IEEE Photonics Journal, Vol 16, Iss 1, Pp 1-6 (2024)
Chirality plays a pivotal role in the interaction between light and matter, yet detecting chiral signals from natural materials remains a challenge, necessitating the enhancement of their intensity. In this study, we present an approach to investigat
Externí odkaz:
https://doaj.org/article/7a34a16bd6354be18074a11e139f1108
Publikováno v:
Photonics, Vol 11, Iss 6, p 579 (2024)
We investigate the interaction between cylindrical vector beams (CVBs) and metallic annular structures. The mechanisms for plasmonic focusing and field distributions are studied both analytically and numerically. We demonstrate that the focusing patt
Externí odkaz:
https://doaj.org/article/fea1721263304a6b9e8e9b7e7a6933d4
Publikováno v:
Photonics, Vol 11, Iss 4, p 328 (2024)
Spatiotemporal optical vortex (STOV) wavepacket is a new type of vortex optical field carrying transverse orbital angular momentum (OAM). Due to the presence of imbalanced dispersion and diffraction phase, the STOV pulse undergoes fragmentation durin
Externí odkaz:
https://doaj.org/article/906537cbf01547f2a2e437d8df03ab86
Publikováno v:
Photonics, Vol 11, Iss 3, p 251 (2024)
We present a simulation-based study on a 3D heterogeneous photonic integration scheme based on a vertical microring coupler (VμRC). Our research introduces a more compact and efficient layout of photonic devices in the vertical direction, surpassing
Externí odkaz:
https://doaj.org/article/dafea5701d634b8e948673dcff9bc6cc
Publikováno v:
IEEE Photonics Journal, Vol 15, Iss 1, Pp 1-4 (2023)
Ultrafast laser that directly emits vortex beam has broad application prospects in many research fields and applications, such as telecommunication, bio-sampling and quantum information science. In this article, we demonstrate a wavelength-tunable an
Externí odkaz:
https://doaj.org/article/2e20af877f8c4c34b1fc65689571195a
Autor:
Fengyu Sun, Wenpeng Wang, Hao Dong, Jianzhi He, Zhiyong Shi, Zhengxing Lv, Qiwen Zhan, Yuxin Leng, Songlin Zhuang, Ruxin Li
Publikováno v:
Physical Review Research, Vol 6, Iss 1, p 013075 (2024)
Novel phase-locked acceleration of a relativistic isolated attosecond electron sheet was realized using a relativistic reflected spatiotemporal optical vortex (STOV) pulse in three-dimensional particle-in-cell simulations. Electrons can be trapped in
Externí odkaz:
https://doaj.org/article/b4b4103fc6464b96a692507565716186