25 papers · ranked by Valyu relevance
Ali Najjar Amiri, Aycan Deniz Vit, Kazim Gorgulu, Emir Salih Magden
Expanding applications in optical communications, computing, and sensing continue to drive the need for high-performance integrated photonic components. Designing these on-chip systems with arbitrary functionality requires beyond what is possible with physical intuition, for which machine learning-based methods have…
Yengwoo Son, Seung Pil Bang, Choul Yong Park, Aldo Vagge + 1 more
As surgeries using multifocal intraocular lenses (IOLs) to correct both cataracts and presbyopia have become common, it has become essential for clinicians to understand their basic optical characteristics to select the optimal lens for their patients. However, there are relatively few review articles on optics that…
Andrew Grieco
A novel dual-mode optical vector spectrum analyzer is demonstrated that is suitable for the characterization of both passive devices as well as active laser sources. It can measure loss, phase response, and dispersion properties over a broad bandwidth, with high resolution and dynamic range.
Mingkang Wang, Diego J. Perez-Morelo, Vladimir Aksyuk
Advances in integrated photonics open up exciting opportunities for batch-fabricated optical sensors using high-quality-factor nanophotonic cavities to achieve ultrahigh sensitivities and bandwidths. The sensitivity improves with increasing optical power; however, localized absorption and heating within a…
Dmitry A. Bykov, Leonid L. Doskolovich, А.А. Morozov, Vladimir Podlipnov + 3 more
'Vladimir Podlipnov' 'Evgeni A. Bezus' 'Payal Verma' 'В. А. Сойфер'] Abstract: We present an experimental demonstration of a subwavelength diffraction grating performing first-order differentiation of the transverse profile of an incident optical beam with respect to a spatial variable. The experimental results are in…
M. Marini, A. Nardini, R. Martínez Vázquez, C. Conci + 9 more
Non-linear excitation microscopy offers several advantages for in-vivo imaging compared to conventional confocal techniques. However, tissue penetration can still be an issue due to scattering and spherical aberrations induced on focused beams by the tissue. The use of low numerical aperture objectives to pass through…
Sanaz Khan-Afshar, Umair Siddique, Mohamed Yousri Mahmoud, Vincent Aravantinos + 3 more
'Vincent Aravantinos' 'Ons Seddiki' 'Osman Hasan' 'Sofiène Tahar'] > Abstract. Optical systems are becoming increasingly important by resolving many bottlenecks in today's communication, electronics, and biomedical systems. However, given the continuous nature of optics, the inability to efficiently analyze optical…
Theodore A. Corcovilos
Geometric optics is often described as tracing the paths of non-diffracting rays through an optical system. In the paraxial limit, ray traces can be calculated using ray transfer matrices (colloquially, ABCD matrices), which are 2 × 2 matrices acting on the height and slope of the rays. A known limitation of ray…
Amelia Carolina Sparavigna
In an article by Thibault et al., 2002, we can find measurements of Raman linewidths in the Q branch of carbon monoxide, for mixtures with Argon at different temperatures. A plot is available for the Q(5) line with a fitted Voigt function. Here we show that a q-Gaussian Tsallis function can be used for fitting this…
Juan Clement, Haroldo Maestre, Germán Torregrosa, Carlos R. Fernández-Pousa
'Carlos R. Fernández-Pousa'] Fiber-optics sensors using interrogation based on incoherent optical frequency-domain reflectometry (I-OFDR) offer benefits such as the high stability of interference in the radio-frequency (RF) domain and the high SNR due to narrowband RF detection. One of the main impairments of the…
Lujia Zhao, Yu-Ang Liu, Huiru Ji, Haibo Wang + 4 more
'Donglin Ma' 'Isabelle Ledoux-Rak'] In the simulation of partially coherent light propagation within optical systems utilizing the Wigner function, the constraints imposed by the Fourier transform necessitate that the dimensions of the input and output matrices remain congruent. Consequently, the extent of the image…
Jun Yu, Shu Zhan, Toru Kurihara, Sylvain Girard
The optical filter is critical in many applications requiring wide-angle imaging perception. However, the transmission curve of the typical optical filter will change at an oblique incident angle due to the optical path of the incident light change. In this study, we propose a wide-angular tolerance optical filter…
Ziyang Chen, Yufei Zhang, Bin Luo, Hong Guo
Optical time-frequency transfer establishes the metrological linkage in large-scale clock networks, which facilitates various applications. Fiber-based transfer benefits from the abundant deployment of fiber infrastructures to achieve this advantage. In this review, we provide an overview of the advances in optical…
Shiyu Li, Chia Wei Hsu
The rapidly advancing capabilities in nanophotonic design are enabling complex functionalities limited mainly by physical bounds. The efficiency of transmission is a major consideration, but its ultimate limit remains unknown for most systems. Here, we introduce a matrix formalism that puts a fundamental bound on the…
Michaël Mazilu
Optical micro-manipulation and trapping of micro-particles delivers a mechanical system in direct interaction with a beam of light. In this interaction, the optical properties such as polarisation, beam profile and wavelength of the trapping beam are important. Different beams are associated with different momentum…
Md Nafiz Hannan, Timothy M. Baran
Treatment planning for light-based therapies including photodynamic therapy requires tissue optical property knowledge. These are recoverable with spatially-resolved diffuse reflectance spectroscopy (DRS), but requires precise source-detector separation (SDS) determination and time-consuming simulations. An artificial…
Maciej Piejko, Benjamin Boglio, Bianca Patrahau, Kripa Joseph + 4 more
In a research article published last year we reported red shifting of the charge transfer band of Reichardt’s dye in the visible spectrum when the solvent was vibrationally coupled to an optical cavity, indicating a change in the polarity of the solvent. The magnitude of the observed shifts correlated with the alkyl…
Maximilian Hoffmann, Jörg Henninger, Lars Richter, Benjamin Judkewitz
Optical imaging is a powerful tool to visualise and measure neuronal activity. However, due to the size and opacity of vertebrate brains it has until now been impossible to simultaneously image neuronal circuits at cellular resolution across the entire adult brain. This is true even for the smallest known vertebrate…
Authors not listed
Molecular polaritons are hybrid states formed by the quantum mechanical interaction between light and matter. Recent experiments have shown the ability to drastically modify chemical reactions in both the ground and excited states through the hybridization of the electronic and photonic degrees of freedom. Ab initio…
Authors not listed
Photoexcitation energy transfer between aromatic residues tryptophan, tyrosine, is the first step in triggering the intracellular responses after UV light absorption in photopro- tective organisms. At sufficiently large separations, F¨orster Resonance Energy Transfer (FRET) between aromatic residues takes place, the…
Authors not listed
Using stable precursor C18Br6 of cyclo[18]carbon (C18) as an electron acceptor and superalkali clusters M3O (M = Li, Na, and K) as electron sources, we theoretically designed M3O@C18Br6 (M = Li, Na, and K) with potential applications in optical and electronic devices. The geometric, electronic, and optical properties…
Vimal Prabhu Pandiyan, Xiaoyun Jiang, James A. Kuchenbecker, Ramkumar Sabesan
Line-scan OCT, incorporated with adaptive optics (AO), offers high resolution, speed and sensitivity for imaging retinal structure and function in vivo. Here, we introduce its implementation with reflective mirror-based afocal telescopes, optimized for imaging light-induced retinal activity (optoretinography) and weak…
Vimal Prabhu Pandiyan, Xiaoyun Jiang, Aiden Maloney Bertelli, James A. Kuchenbecker + 2 more
Optoretinography – the non-invasive, optical imaging of light-induced functional activity in the retina – stands to provide a critical biomarker for testing the safety and efficacy of new therapies as well as their rapid translation to the clinic. Optical phase change in response to light, as readily accessible in…
Authors not listed
Phase change materials (PCMs) with distinct optical properties at different phases are promising candidates for programmable photonics, optical communication and photonic computing. In this work, we have studied thermo-optic effect in a PCM-based integrated photonic device comprising a film of bistable [Fe2Co2]…
Sarthak Patnaik
We know that the diffusion is defined as the movement of molecules under a potential gradient. It is characterized by the diffusion coefficient. Diffusion coefficient determination can be done via various techniques, but in this paper, we have had a broad look at interferometry based optical methods for diffusion…