Photonics Insights, Год журнала: 2024, Номер 3(4), С. R08 - R08
Опубликована: Янв. 1, 2024
Язык: Английский
Advanced Quantum Technologies, Год журнала: 2025, Номер unknown
Опубликована: Янв. 6, 2025
Abstract In a conventional quantum imaging experiment, the image of object is retrieved directly with single photon camera technology, or computationally single‐pixel detector and pixelated projective masks. all these approaches, resolution dictated by pixel detection devices. this paper, traditional spatial basis pixels replaced modes, exploiting their unique features to enhance fidelity improve reconstruction accuracy through modal sparsity. This approach can be used even when modes are not orthogonal, demonstrating principle highly efficient phase‐only approximations basis. By numerical simulation experimental analysis, advantages illustrated, which include faster convergence object, higher signals fidelity, demonstrated an order magnitude less masks than approaches for same in outcome. Unlike pixels, detectors, opening path high‐resolution complex objects.
Язык: Английский
Процитировано
1
Nanophotonics, Год журнала: 2025, Номер 14(6), С. 729 - 739
Опубликована: Фев. 3, 2025
Abstract Reconnections of spatiotemporal optical vortices have been shown to occur between line vortices. Here, we show that reconnections also loop in waves. As propagate a media with spatial diffraction and material group velocity dispersion, unique occur. The birth death loops can occur, certain emerging from or collapsing single point while interacting others. parameters are varied the model, complex arrangements form space-time simple initial fields.
Язык: Английский
Процитировано
1
Nanophotonics, Год журнала: 2025, Номер unknown
Опубликована: Март 20, 2025
Abstract Shaping transverse degrees of freedom across different temporal frequency spectra has unlocked new possibilities for realizing a wide variety novel spatiotemporal phenomena. In particular, using the discrete frequencies optical combs synthesis enables precise spatial separation and control individual spectral lines, thereby facilitating experimental generation space-time wave packets (STWPs). This review explores theoretical investigation demonstration versatile STWPs synthesized correlated comb lines fields, including following: (a) exhibiting dynamic evolution properties; (b) with customized group velocities; (c) longitudinal over STWPs.
Язык: Английский
Процитировано
1
APL Photonics, Год журнала: 2024, Номер 9(7)
Опубликована: Июль 1, 2024
The characterization of ultrashort laser pulses has significantly advanced beyond the standard spatial and temporal diagnostics to now include sophisticated spatio-temporal measurement techniques. In this perspective, we provide an overview current state space–time characterization, discussing theoretical foundations pulses, various techniques their design trade-offs, challenges opportunities for future development. We explore extension these different wavelength regimes delve into unique posed by polarization-structured beams. potential data-driven analysis enhance information extracted from measurements is highlighted, along with need direct previously inaccessible field components, such as longitudinal electric in tightly focused As diagnostic tools continue evolve, anticipate a where intricate structure light can be analyzed on routine basis, opening up new frontiers ultrafast science technology.
Язык: Английский
Процитировано
5
Photonics Research, Год журнала: 2024, Номер 12(10), С. 2409 - 2409
Опубликована: Июль 31, 2024
The realization of spatiotemporal vortex structure various physical fields with transverse orbital angular momentum (OAM) has attracted much attention and is expected to expand the research scope open new opportunities in their respective fields. Here we present theoretically first, best our knowledge, study on generation attosecond pulse trains featuring a optical (STOV) by two-color femtosecond light field, each color carrying OAM. Through careful optimization relative phase intensity ratio, validate efficient upconversion infrared into its tens order harmonics, showing that harmonic preserves corresponding intact topological charge. This unique characteristic enables synthesis an extreme ultraviolet train In addition, reveal ionization depletion plays outsize role therein. Our studies pave way for utilization STOV regime.
Язык: Английский
Процитировано
5
Optics & Laser Technology, Год журнала: 2025, Номер 184, С. 112478 - 112478
Опубликована: Янв. 14, 2025
Язык: Английский
Процитировано
0
Optics Communications, Год журнала: 2025, Номер unknown, С. 131714 - 131714
Опубликована: Март 1, 2025
Язык: Английский
Процитировано
0
ACS Photonics, Год журнала: 2025, Номер unknown
Опубликована: Март 9, 2025
Язык: Английский
Процитировано
0
Laser & Photonics Review, Год журнала: 2025, Номер unknown
Опубликована: Март 15, 2025
Abstract Standing‐waves created by counter‐propagating light beams can adopt various forms, offering flexible and efficient methods for recording complex periodic structures in polarization‐sensitive materials. Compared to conventional holographic/lithographic techniques, this approach simplifies the encoding of intricate customizable with finely tunable periodicities highresolution. It also overcomes limitations at submicrometric periodicities, where traditional struggle maintain fidelity desired designs. This study explores 1D standing‐waves different polarization gradients, such as corkscrew Sisyphus patterns. Generated laser operating multiline‐mode decoupled intensity control, these encode multiple, independent volume gratings simultaneously a single‐step process. Submicrometric are achieved positioning material layer tilting angle within standing‐wave, allowing fine‐tuning few nanometers spatial resolution. The resulting diffract notably large angles, preserving properties avoiding crosstalk. These spatio‐spectral hold transformative potential ultra‐compact optical systems. Key applications include structuring, advanced information processing higher capacity security, augmented/virtual reality platforms, control ensures high‐fidelity image projection interaction. method opens unexplored opportunities scalable, high‐resolution cutting‐edge technologies.
Язык: Английский
Процитировано
0
Photonics, Год журнала: 2025, Номер 12(3), С. 288 - 288
Опубликована: Март 20, 2025
Toroidal vortices, as intriguing topological structures, play a fundamental role across wide range of physical fields. In this study, we theoretically propose family structured optical toroidal vortices generalized forms in paraxial continuous wave beams. These exhibit unique rotational symmetry while preserving the properties standard vortices. The three-dimensional structures demonstrate l-fold symmetry, which is closely related to charges. Structured introduce additional invariants within light field. fields hold significant potential applications synthesis complex structure and information encoding.
Язык: Английский
Процитировано
0