23 papers · ranked by Valyu relevance
Pradip Gatkine, Sylvain Veilleux, Yiwen Hu, Tiecheng Zhu + 3 more
'Joss Bland‐Hawthorn' 'M. Dagenais'] Astrophotonics is the next-generation approach that provides the means to miniaturize near-infrared (NIR) spectrometers for upcoming large telescopes and make them more robust and inexpensive. The target requirements for our spectrograph are: a resolving power of ∼3000, wide…
Sylvain Veilleux, Y. Hu, M. Dagenais, Joss Bland‐Hawthorn + 1 more
'Pradip Gatkine'] Astrophotonics is the new frontier technology to make suitable diffraction-limited spectrographs for the next generation of large telescopes. Astrophotonic spectrographs are miniaturized, robust and cost-effective. For various astronomical studies, such as probing the early universe, observing in near…
Nick Cvetojević, Nemanja Jovanović, Simon Gross, Barnaby Norris + 8 more
'Izabela Spaleniak' 'Christian Schwab' 'Michael J. Withford' 'Michael Ireland' 'Peter Tuthill' 'Olivier Guyon' 'Frantz Martinache' 'Jon Lawrence'] Abstract: In an attempt to develop a streamlined astrophotonic instrument, we demonstrate the realization of an all-photonic device capable of both multimode to single mode…
Markus Ludwig, Furkan Ayhan, Tobias M. Schmidt, Thibault Wildi + 20 more
'Thibault Voumard' 'Roman Blum' 'Zhichao Ye' 'Fuchuan Lei' 'François Wildi' 'Francesco Pepe' 'Mahmoud A. Gaafar' 'Ewelina Obrzud' 'Davide Grassani' 'Olivia Hefti' 'Sylvain Karlen' 'Steve Lecomte' 'François Moreau' 'Bruno Chazelas' 'Rico Sottile' 'Victor Torres-Company' 'Victor Brasch' 'Luis G. Villanueva' 'François…
M. Dolores Perez, Pradip Gatkine, Nemanja Jovanović, Jeffrey Jewell + 2 more
'J. Kent Wallace' 'Dimitri Mawet'] Photonic spectrographs offer a highly miniaturized, flexible, and stable on-chip solution for astronomical spectroscopy and can be used for various science cases such as determining the atmospheric composition of exoplanets to understand their habitability, formation, and evolution.…
Vinita Mittal, George Devitt, Milos Nedeljkovic, Lewis G. Carpenter + 4 more
'Harold M. H. Chong' 'James S. Wilkinson' 'Sumeet Mahajan' 'Goran Z. Mashanovich'] Specific proteins and their aggregates form toxic amyloid plaques and neurofibrillary tangles in the brains of people suffering from neurodegenerative diseases such as Alzheimer’s and Parkinson’s. It is important to study these…
Pradip Gatkine, Nemanja Jovanović, Jeffrey Jewell, J. Kent Wallace + 1 more
'Dimitri Mawet'] With the upcoming extremely large telescopes (ELTs), the volume, mass, and cost of the associated spectrographs will scale with the telescope diameter. Astrophotonics offers a unique solution to this problem in the form of single-mode fiber-fed diffraction-limited spectrographs on a chip. These highly…
Nick Cvetojević, Nemanja Jovanović, Jon Lawrence, Michael J. Withford + 1 more
'Michael J. Withford' 'Joss Bland‐Hawthorn'] 1MQ Photonics Research Centre, Department of Physics and Astronomy, Macquarie University, NSW 2109, Australia 2Centre for Astronomy, Astrophysics and Astrophotonics, Macquarie University, Australia 3Anglo-Australian Observatory, PO Box 296, Epping, NSW 2121, Australia…
Stefano Minardi, Robert J. Harris, Lucas Labadie
Much of the progress in Astronomy has been driven by instrumental developments, from the first telescopes to fiber fed spectrographs. In this review we describe the field of astrophotonics, a combination of photonics and astronomical instrumentation that is currently gaining importance in the development of current and…
Elmar Schmälzlin, Benito Moralejo, Monika Rutowska, Ana Monreal-Ibero + 4 more
'Ana Monreal-Ibero' 'Christer Sandin' 'Nicolae Tarcea' 'Jürgen Popp' 'Martin M. Roth'] Until now, spatially resolved Raman Spectroscopy has required to scan a sample under investigation in a time-consuming step-by-step procedure. Here, we present a technique that allows the capture of an entire Raman image with only…
Barnaby R. M. Norris, Jin Wei, Christopher H. Betters, Alison Wong + 1 more
'Sergio G. Leon-Saval'] Adaptive optics (AO) is critical in astronomy, optical communications and remote sensing to deal with the rapid blurring caused by the Earth’s turbulent atmosphere. But current AO systems are limited by their wavefront sensors, which need to be in an optical plane non-common to the science image…
Pattarapong Sunongbua, Suwan Aekram, Weerasak Lertsiriyothin, Kenneth Schepler + 1 more
'Kenneth Schepler' 'Ajoy Kar'] To make the mid-infrared (MIR) dispersive spectrograph a practical tool in industrial food processing lines, we designed a dispersive spectrograph system with an uncooled microbolometer focal plane array (FPA) detector for MIR spectral acquisition. To precisely regulate the angle of a…
Ida S. Opstad, Florian Ströhl, Marcus Fantham, Colin Hockings + 8 more
Large fields of view (FOVs) in total internal reflection fluorescence microscopy (TIRFM) via waveguides have been shown to be highly beneficial for single molecule localisation microscopy on fixed cells [1, 2] and have also been demonstrated for short-term live-imaging of robust cell types [3–5], but not yet for…
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]…
Anders Kokkvoll Engdahl, Surjendu Bikash Dutta, Stefan Belle, Jasmin Schürstedt + 5 more
Photonic waveguide chips offer near-field excitation of biological samples, which enables cost-effective, large field-of-view super-resolution microscopy without the need for high numerical aperture (NA) objective lenses. Single molecule localization based super-resolution microscopy that requires high illumination…
Shomik Verma, Daniel Farrell, Rachel Evans
Luminescent solar concentrators (LSCs) are a promising technology to help integrate solar cells into the built environment, as they are colorful, semi-transparent, and can collect diffuse light. While LSCs have traditionally been cuboidal, in recent years a variety of unconventional geometries have arisen, for example…
Yuntian Wang, Yuhang Li, Tianyi Gan, Kun Liao + 2 more
'Aydogan Ozcan'] We introduce universal diffractive waveguide designs that can match the performance of conventional dielectric waveguides and achieve various functionalities. Optimized using deep learning, diffractive waveguides can be cascaded to form any desired length and are comprised of transmissive diffractive…
Phillip J. Dorsey, Dominic Scalise, Rebecca Schulman
In multicellular organisms, cells and tissues coordinate biochemical signal propagation across length scales spanning microns to meters. Endowing synthetic materials with similar capacities for coordinated signal propagation could allow these systems to adaptively regulate themselves across space and over time. Here we…
Michael Sabatini Mattei, Boyuan Liu, Gerardo A. Mazzei Capote, Zijie Liu + 3 more
Photonic topological insulators have emerged as an exciting new platform for backscatter-free waveguiding even in the presence of defects, with applications in robust long-range energy and quantum information transfer, low-threshold lasing, and chiral quantum optics. We demonstrate a design for spin-Hall photonic…
Georg Ramer, Ufuk Yilmaz, Savda Sam, Bernhard Lendl
We demonstrate a novel approach for bottom-illuminated atomic force microscopy infrared spectroscopy (AFM-IR). This nearfield technique is suitable for AFM-IR measurements in liquids, taking advantage of an attenuated total reflection (ATR) setup where the developing evanescent wave is used for photothermal excitation…
H. Liu, S. Kumar, E. Garcia, P.M.W. French
Spectrally resolved imaging is typically realised using bandpass filters, which are inefficient when they reject “out-of-band” photons or using angularly dispersive devices with at least one image dimension requiring scanning to acquire a full hyperspectral dataset and therefore sequential data acquisition, unless…
Ryan M. Jamiolkowski, Kevin Y Chen, Shane A. Fiorenza, Alyssa M. Tate + 2 more
In single molecule fluorescence studies, background emission from labeled substrates often restricts their concentrations to non-physiological nanomolar values. One approach to address this challenge is the use of zero-mode waveguides (ZMWs), nanoscale holes in a thin metal film that physically and optically confine…
Anna Lena Schäfer, Cristina Gellini, Rolf Diller, Katrina T. Forest + 2 more
Time-resolved resonance Raman spectroscopy with continuous-wave excitation is a fundamental technique that has contributed substantially to the understanding of structure and dynamics of bacteriorhodopsin and related retinal proteins. However, the underlying principles were developed about fifty years ago for…