20 papers · ranked by Valyu relevance
Hien Phan-Thanh, Nguyen Nguyen-Duc, Thuy Le-Quang, Tobias C. Hinse + 1 more
Hien Phan-Thanh 1 , Nguyen Nguyen-Duc2,7, ∗ , Thuy Le-Quang 3 , Tobias C. Hinse 4 , Quang Nguyen-Luong5,6, 2 1 University of Science and Technology of Hanoi, Vietnam Academy of Science and Technology, Hanoi 100000, Vietnam 2 TNU Observatory, Tay Nguyen University, 567 Le Duan, Ea Tam, Buon Ma Thuot City, Dak Lak…
Sergio G. Leon-Saval, Christopher H. Betters, Joss Bland‐Hawthorn
We present a proof of concept compact diffraction limited high-resolution fiber-fed spectrograph by using a 2D multicore array input. This high resolution spectrograph is fed by a 2D pseudo-slit, the Photonic TIGER, a hexagonal array of near-diffraction limited single-mode cores. We study the feasibility of this new…
Sukrit Thongrom, Panuwat Pengphorm, Surachet Wongarrayapanich, Apirat Prasit + 15 more
'Apirat Prasit' 'Chanisa Kanjanasakul' 'Wiphu Rujopakarn' 'Saran Poshyachinda' 'Chalongrat Daengngam' 'Nawapong Unsuree' 'Bing Zhang' 'Yongguang Zhang' 'Yinnian Liu' 'Liangpei Zhang' 'Yuwei Chen' 'Jianxin Jia' 'Qingli Li' 'Mingyang Zhang' 'Yueming Wang' 'Chenchao Xiao'] Hyperspectral imaging (HSI) is an effective…
Krzysztof B. Beć, Justyna Grabska, Christian W. Huck, Matteo Stocchero
The ongoing miniaturization of spectrometers creates a perfect synergy with the common advantages of near-infrared (NIR) spectroscopy, which together provide particularly significant benefits in the field of food analysis. The combination of portability and direct onsite application with high throughput and a…
Lei Feng, Xiaoying He, Yacan Li, Lidong Wei + 3 more
'Juanjuan Jing' 'Jinsong Zhou'] This article demonstrates a compact prism imaging spectrometer method. A catadioptric curved prism is located at the secondary mirror position of the spectrometer and used to balance the aberrations, enlarge the dispersion width, and decrease the volume. A mathematical model of the prism…
Pietro Schipani, S. Campana, Riccardo Claudi, H. U. Käufl + 48 more
'Matteo Accardo' 'Mika Hirvonen' 'Jussi Lehti' 'Jari Kotilainen' 'Tarun Kumar' 'Jani Achrén' 'Luca Marafatto' 'O. Hershko' 'Matteo Aliverti' 'Andrea Baruffolo' 'Sagi Ben-Ami' 'Federico Biondi' 'Anna Brucalassi' 'Giulio Capasso' 'R. Cosentino' 'F. D’Alessio' 'P. D’Avanzo' 'Oz Diner' 'D. Gardiol' 'Hanindyo Kuncarayacti'…
Minh H. Tran, Baowei Fei
Significance Spectral imaging, which includes hyperspectral and multispectral imaging, can provide images in numerous wavelength bands within and beyond the visible light spectrum. Emerging technologies that enable compact, portable spectral imaging cameras can facilitate new applications in biomedical imaging. Aim…
Mike Hardy, Pooja P. Kanade, Emma Buchan, Pola Goldberg Oppenheimer + 2 more
The global portable spectroscopy market is rapidly expanding, with optical technologies composing the greatest market share. One prominent light-based technology is Raman spectroscopy, which confers benefits in terms of high selectivity and thus untargeted detection and multiplexing capabilities. Alongside this…
В. Е. Панчук, В. Г. Клочкова, E. V. Emelianov
The interest in small- and moderate-diameter telescopes is due to the development of methods for the use of novel detectors. Thus the results of the first revolution of the technique of registration of weak signals (mind XX-century) served as the basis for the program of the 1956 symposium [1] (the Russian edition was…
Amitesh Omar, T. S. Kumar, B.K. Reddy, Jayshreekar Pant + 1 more
'Manoj Mahto'] A low dispersion spectrograph-cum-imager has been developed and assembled in ARIES, Nainital. The optical design of the spectrograph consists of a collimator and a focal reducer converting the f/9 beam from the 3.6-m Devasthal optical telescope to a nearly f/4.3 beam. The instrument is capable of…
Walter M. Nakaema, Zuo-Qiang Hao, Philipp Rohwetter, Ludger Wöste + 1 more
'Kamil Stelmaszczyk'] A multiwavelength, multicomponent CRDS gas sensor operating on the basis of a compact photonic crystal fibre supercontinuum light source has been constructed. It features a simple design encompassing one radiation source, one cavity and one detection unit (a spectrograph with a fitted ICCD camera)…
Nan Jia, Arthur Daignault Bouchard, Tianyang Deng, Leon Torres de Oliveira + 2 more
In this paper, we present a generalizable method for the fabrication of disposable spectrofluidic devices for solution characterization by attenuated total reflectance (ATR) Fourier transform infrared (FTIR) spectroscopy. A major design feature is the integration of an ATR element into the device rather than the…
Andrew J Harvie, Surendra K Yadav, John C de Mello
We report a sensitive, fixed-wavelength, lock-in-based optical detector built from a light-emitting diode, two colour filters, a photodetector, a small number of discrete analogue components, and a low-cost microcontroller development board. We describe the construction, operating principle, use and performance of the…
Jiahe Cui, Raphaël Turcotte, Karen M. Hampson, Matthew Wincott + 4 more
Visual guidance at the cellular level during neurosurgical procedures is essential for complete tumour resection. We present a compact reflectance confocal microscope with a 20 mm working distance that provided <1.2 µm spatial resolution over a 600 µm × 600 µm field of view in the near-infrared region. A physical…
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…
Robert R. Puccinelli, Joana P. Cabrera, Emily Huynh, Paul M. Lebel + 1 more
Measuring optical density (OD) is a very common technique in biological laboratories to determine the concentration of a substance in solution or of bacteria (or microscopic particles) in suspension. For example, bacterial cultures engineered to produce (express) a protein or compound of interest are a workhorse of…
Gabriel G. Moya Muñoz, Oliver Brix, Philipp Klocke, Nicolas D. Wendler + 3 more
Over the past decades, single-molecule spectroscopy and super-resolution microscopy have advanced significantly and by now represent important tools for life science research. Despite rapid progress and ongoing development, there is a growing gap between the state-of-the-art and what is accessible to non-optics…
Matthias Grotevent, Claudio U. Hail, Sergii Yakunin, Dominik Bachmann + 4 more
Infrared light detection enables diverse technologies ranging from night vision to gas analysis. Emerging technologies such as low-cost cameras for self-driving cars require highly sensitive, low-cost photodetector cameras with spectral sensitivities up to wavelength of 10 um. For this purpose, colloidal quantum dot…
Amaury Badon, Laetitia Andrique, Amaël Mombereau, Louis Rivet + 3 more
Optical imaging has rapidly evolved in the last decades. Sophisticated microscopes allowing optical sectioning for 3D imaging or sub-diffraction resolution are available. Due to price and maintenance issues, these microscopes are often shared between users in facilities. Consequently, long term access is often…
Andrew Harvie, John de Mello
The Open Polarimeter (“Opol”) is a phase-based, high-resolution laser polarimeter formed from a small number of inexpensive optomechanical parts. The complete instrument can be assembled from scratch in two days for less than US$250, using only a 3D-printer and a benchtop milling machine. However despite its low cost…