Article
Optics
Chao He, Yijie Shen, Andrew Forbes
Summary: This article discusses methods, challenges, and opportunities for the creation, detection, and control of multiple degrees of freedom for higher-dimensional structured light, and presents a roadmap for future development.
LIGHT-SCIENCE & APPLICATIONS
(2022)
Article
Optics
Zi-Mo Cheng, Shu-Tian Xue, Yan-Chao Lou, Pei Wan, Zhi-Cheng Ren, Jianping Ding, Xi-Lin Wang, Hui-Tian Wang
Summary: Rotational Doppler effect is a phenomenon that occurs when light passes through a rotating object and its angular momentum changes. It has been studied extensively in linear optics, but its application in nonlinear optics remains to be explored.
Article
Optics
Yan-Chao Lou, Zi-Mo Cheng, Zhi-Hong Liu, Yu-Xiang Yang, Zhi-Cheng Ren, Jianping Ding, Xi-Lin Wang, Hui-Tian Wang
Summary: In this experiment, third-harmonic generation of spatially structured light, including vector optical fields, was achieved for the first time using a nonlinear Sagnac interferometer containing a carefully designed quasi-periodically poled potassium titanyl phosphate crystal. The experimental results confirmed the theoretical predictions and opened up new possibilities for manipulating spatially structured light or photons with higher orbital angular momentum at new wavelengths.
Review
Optics
Wagner Tavares Buono, Andrew Forbes
Summary: There is a growing interest in tailoring light in all its degrees of freedom, with a focus on structured light and nonlinear optics. The traditional linear optical elements have been mainly used for creating desired superpositions, but recent developments have highlighted the importance of spatial structure in nonlinear processes. This review offers a theoretical framework for understanding nonlinear optics in the context of structured light, discussing progress made and challenges ahead.
OPTO-ELECTRONIC ADVANCES
(2022)
Article
Optics
Hai-Jun Wu, Bing-Shi Yu, Zhi-Han Zhu, Wei Gao, Dong-Sheng Ding, Zhi-Yuan Zhou, Xiao-Peng Hu, Carmelo Rosales-Guzman, Yijie Shen, Bao-Sen Shi
Summary: In this work, a conformal frequency conversion scheme is proposed to maintain the full spatial structure of vectorial structured light. The spatial polarization independence of this scheme is systematically examined based on nondegenerate sum-frequency generation with type-0 phase matching. This proof-of-principle demonstration opens up possibilities for various applications.
Review
Optics
Andrew Forbes, Michael de Oliveira, Mark R. Dennis
Summary: Recent efforts have focused on controlling the structure of light in all its degrees of freedom and dimensions, pushing the limits of structured light and expanding its potential. Beyond traditional orbital angular momentum, two-dimensional fields, qubits and biphotons, and linear optical manipulation.
Article
Computer Science, Information Systems
Tomislav Petkovic, Tomislav Pribanic, Matea Donlic, Nicola D'apuzzo
Summary: Multi-projector structured light surface scanning allows the use of multiple projectors to scan surfaces simultaneously. This method utilizes sinusoidal fringe patterns and temporal phase shifting to separate the contributions from each projector.
Article
Optics
Feng Zhou, Xiyuan Lu, Ashutosh Rao, Jordan Stone, Gregory Moille, Edgar Perez, Daron Westly, Kartik Srinivasan
Summary: A novel scheme, called hybrid-mode-family OPO (hOPO), is proposed in this study, which uses different families of transverse spatial modes for optical parametric oscillation. Compared to traditional single-mode-family OPO, hOPO shows better robustness in dispersion, device geometry, pump frequency, and temperature, and is capable of generating coherent visible and infrared light sources efficiently.
LASER & PHOTONICS REVIEWS
(2022)
Editorial Material
Optics
Andrew Forbes
Summary: This paragraph discusses the customization of nano-structured metasurfaces using artificial atoms as toroidal emitters, resulting in the long-predicted new form of light, flying doughnuts, which are propagating spatial-temporal electromagnetic toroidal pulses in both the visible and THz regimes.
LIGHT-SCIENCE & APPLICATIONS
(2022)
Article
Physics, Applied
Ayed Al Sayem, Yubo Wang, Juanjuan Lu, Xianwen Liu, Alexander W. Bruch, Hong X. Tang
Summary: The study demonstrates the operation of thin film lithium niobate in the blue wavelength range and the high fidelity poling of the thin-film LN waveguide for this purpose. This allows for quasi-phase matching between IR and blue wavelengths, leading to strong blue light generation with stable temperature tunability, essential for precise frequency alignment applications like atomic clocks.
APPLIED PHYSICS LETTERS
(2021)
Article
Engineering, Electrical & Electronic
Wenjun Shao, Yu Huang
Summary: To address the issue of light noise interference in the welding process, we proposed a seam tracking method that modulates the intensity of structured light at a high frequency using an acoustic-optic modulator and extracts the modulated frequency from multiple seam images through Fourier transformation. By directly removing noises such as sparks in the frequency domain, the method demonstrates robustness in detecting seams in noisy welding conditions.
IEEE SENSORS JOURNAL
(2021)
Article
Computer Science, Software Engineering
Byeongjoo Ahn, Ioannis Gkioulekas, Aswin C. Sankaranarayanan
Summary: The combination of structured light system and kaleidoscope enables precise and full surround 3D scanning of complex shapes, with accurate determination of projector and camera pixel labels. This system can serve as a multi-view structured light system with hundreds of virtual projectors and cameras, demonstrating advantages in scanning objects with a wide range of shapes and reflectances.
ACM TRANSACTIONS ON GRAPHICS
(2021)
Article
Optics
Jinpeng Yuan, Hao Liu, Lirong Wang, Liantuan Xiao, Suotang Jia
Summary: A stable and continuously tunable 420 nm coherent blue light was generated in Rb vapor through cavity-enhanced four-wave mixing process, with high output power and stability. The generated laser has good beam qualities and potential applications in photon-atom interactions.
Article
Chemistry, Physical
Matthias Rebber, Hendrik Sannemueller, Michael Jaruszewski, Daniela Pfannkuche, Atsushi Urakawa, Dorota Koziej
Summary: In this study, a hierarchical three-dimensional (3D) printed aerogel photocatalyst is developed to improve photocatalytic production rates by combining efficient mass transfer and light utilization. The implementation of a self-supported aerogel in a continuous gas flow reactor, guided by additive manufacturing and computational fluid dynamics, significantly reduces the pressure drop without compromising gas permeation and light-harvesting efficiency. The 3D aerogel exhibits enhanced photocatalytic hydrogen production rates compared to nanoparticle powder, demonstrating its potential for boosting the overall performance of photochemical processes and reactor designs.
CHEMISTRY OF MATERIALS
(2023)
Article
Physics, Multidisciplinary
Ya-Ting Qiu, Li-Hong Hong, Zhi-Yuan Li
Summary: This work theoretically and systematically investigates the second harmonic generation (SHG) in a lithium niobate (LN) crystal by considering the transmission and reflection of TE-polarized pump light at the air-crystal interface. The physical process of light beam transport and nonlinear optical polarization generation in the crystal is described, and the reflection coefficient and transmission coefficient of pump light are derived. The conversion efficiency of the second-harmonic wave is found to depend on the transmission coefficient and other physical quantities, such as the length of the crystal and the amplitude of pump light, under the transmission and reflection models. The proposed analytical theory and formulation provide an accurate tool for evaluating the SHG energy conversion efficiency in practical situations and can be applied to other nonlinear optics problems.
Article
Chemistry, Physical
Rhenish C. Simon, Jenny Lou B. Sagisi, Nina Angelica F. Zambale, Nathaniel Hermosa
Article
Optics
Rubaiya Hussain, Mehmet Alican Noyan, Getinet Woyessa, Rodrigo R. Retamal Marin, Pedro Antonio Martinez, Faiz M. Mahdi, Vittoria Finazzi, Thomas A. Hazlehurst, Timothy N. Hunter, Tomeu Coll, Michael Stintz, Frans Muller, Georgios Chalkias, Valerio Pruneri
LIGHT-SCIENCE & APPLICATIONS
(2020)
Article
Optics
Daniel F. Urrego, Dorilian Lopez-Mago, Veronica Vicuna-Hernandez, Juan P. Torres
Article
Optics
R. Valivarthi, S. Etcheverry, J. Aldama, F. Zwiehoff, V. Pruneri
Article
Multidisciplinary Sciences
Christina Graham, Miriam Marchena Martin Frances, Rinu Abraham Maniyara, Yugeng Wen, Prantik Mazumder, Valerio Pruneri
SCIENTIFIC REPORTS
(2020)
Article
Nanoscience & Nanotechnology
Nestor Bareza, Kavitha K. Gopalan, Rose Alani, Bruno Paulillo, Valerio Pruneri
Article
Chemistry, Physical
Cherrie May Olaya, Norihiko Hayazawa, Nathaniel Hermosa, Takuo Tanaka
Summary: In this study, surface plasmon resonance (SPR) was used to enhance the angular Goos-Hanchen (GH) shift. By focusing the incident beam to a small beam waist, a significant increase in the angular GH shift was induced, while the spatial GH shift was negligible. Despite decreased efficiency in surface plasmon excitation due to the focused geometry, a large enhancement in the angular GH shift was demonstrated.
JOURNAL OF PHYSICAL CHEMISTRY A
(2021)
Article
Chemistry, Analytical
Cherrie May Olaya, Norihiko Hayazawa, Maria Vanessa Balois-Oguchi, Nathaniel Hermosa, Takuo Tanaka
Summary: The study demonstrates potential molecular monolayer detection through measurements of surface plasmon resonance and angular Goos-Hanchen shift. The presence of a benzenethiol self-assembled monolayer on a gold substrate enhances the Goos-Hanchen shift, dominated by angular shift.
Article
Optics
Ritz Ann Aguilar, Nathaniel Hermosa, Maricor Soriano
Summary: In this study, three-dimensional computational ghost imaging was achieved using multiple photoresistors as single-pixel detectors with the semi-calibrated lighting approach. The depth map and surface normals of the scene were retrieved accurately by performing imaging in the spatial frequency domain and applying semi-calibrated photometric stereo (SCPS) to the obtained spectra.
Article
Multidisciplinary Sciences
Sebastian Toepfer, Marta Gilaberte Basset, Jorge Fuenzalida, Fabian Steinlechner, Juan P. Torres, Markus Grafe
Summary: Holography uses interference of a light field to reconstruct the spatial shape of an object, but traditional methods are limited by detection constraints outside the visible range. By implementing phase-shifting holography with nonclassical states of light and quantum interference between two-photon probability amplitudes, it is possible to overcome these limitations and retrieve the spatial shape of transmitted/reflected photons from the object.
Article
Optics
Arturo Villegas, Mario A. Quiroz-Juarez, Alfred B. U'Ren, Juan P. Torres, Roberto de J. Leon-Montiel
Summary: In this study, we propose and demonstrate a smart laser-diffraction analysis technique for identifying particle mixtures. By using model particles, we accurately retrieve information about two-component heterogeneous mixtures with high accuracy. The method simplifies implementation and paves the way for the development of novel smart identification technologies.
Article
Optics
Dina Grace C. Banguilan, Viron Gil Estrada, Nathaniel P. Hermosa II
Summary: This work presents a simple technique to measure higher TCs using Hadamard-coded apertures and demonstrates that centroids of diffracted beams move depending on the TC and the aperture order N. The technique is crucial for determining higher-order modes whose TC are difficult to determine with currently available methods.
Article
Optics
Daniel F. Urrego, Juan P. Torres
Summary: We propose and experimentally demonstrate a quantum-inspired protocol for quantifying the degree of similarity between two spatial shapes in optical beams without the need for amplitude and phase measurement. Instead, the desired information can be obtained by measuring the degree of polarization of the combined optical beam, which is easier to implement experimentally. The protocol utilizes non-separable optical beams, where different degrees of freedom (polarization and spatial shape) cannot be described independently. One important feature of this method is its ability to compare two unknown spatial shapes.
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION
(2022)
Article
Optics
Arturo Rojas-Santana, Gerard J. Machado, Maria V. Chekhova, Dorilian Lopez-Mago, Juan P. Torres
Summary: This study analyzes and compares the output signals obtained in three different configurations of optical coherence tomography (OCT) in order to evaluate the performance of different configurations in extracting information about the sample. The configurations include standard OCT and two types of OCT schemes based on nonlinear interferometers, with the optical sectioning of the sample achieved by measuring the output signal spectrum.
Article
Optics
Oscar Cordero, Arturo Villegas, Juan-Rafael Alvarez, Roberto de J Leon-Montiel, M. H. M. Passos, Juan P. Torres
Summary: The concept of quantum discord aims to uncover quantum correlations beyond entanglement, but its original formulation is difficult to compute. Alternative forms like geometric measure and local quantum uncertainty have been developed, which can be easily evaluated in certain quantum systems. Research shows that these two measures are equivalent in 2xD dimensional bipartite quantum systems.