In-depth performance analysis of the HyperFlux spectrometer

Meade, Jeffrey T.; Behr, Bradford B.; Bismilla, Yusuf; Cenko, Andrew T.; Hajian, Arsen R.

doi:10.1117/12.2005285

Cited by 9 publications

(4 citation statements)

References 4 publications

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“…Historically, efforts were been made to improve étendue 132 of instruments using image slicing. [133][134][135][136] A related concept, a pupil slicer, was developed and characterized recently 137,138 and is now applied to some commercial Raman instruments 139 and a portable Raman hyperspectral imaging instrument. 140 In portable Raman instruments, there has been a trend towards transmission gratings [141][142][143] (typically $f/1.3) and away from Czerny-Turner reflection designs (typically $f/3.5).…”

Section: Etendue Improvementmentioning

confidence: 99%

Portable Spectroscopy

Crocombe¹

2018

Appl Spectrosc

402

233

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Until very recently, handheld spectrometers were the domain of major analytical and security instrument companies, with turnkey analyzers using spectroscopic techniques from X-ray fluorescence (XRF) for elemental analysis (metals), to Raman, mid-infrared, and near-infrared (NIR) for molecular analysis (mostly organics). However, the past few years have seen rapid changes in this landscape with the introduction of handheld laser-induced breakdown spectroscopy (LIBS), smartphone spectroscopy focusing on medical diagnostics for low-resource areas, commercial engines that a variety of companies can build up into products, hyphenated or dual technology instruments, low-cost visible-shortwave NIR instruments selling directly to the public, and, most recently, portable hyperspectral imaging instruments. Successful handheld instruments are designed to give answers to non-scientist operators; therefore, their developers have put extensive resources into reliable identification algorithms, spectroscopic libraries or databases, and qualitative and quantitative calibrations. As spectroscopic instruments become smaller and lower cost, ''engines'' have emerged, leading to the possibility of being incorporated in consumer devices and smart appliances, part of the Internet of Things (IOT). This review outlines the technologies used in portable spectroscopy, discusses their applications, both qualitative and quantitative, and how instrument developers and vendors have approached giving actionable answers to non-scientists. It outlines concerns on crowdsourced data, especially for heterogeneous samples, and finally looks towards the future in areas like IOT, emerging technologies for instruments, and portable hyphenated and hyperspectral instruments.

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Section: Etendue Improvementmentioning

confidence: 99%

Portable Spectroscopy

Crocombe¹

2018

Appl Spectrosc

402

233

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“…This instrument benefits from a high throughput virtual slit (HTVS) technology that permits faster measurements. 62 The experimental setup was similar to that used previously, with the Tornado instrument in place of the THz Raman (Fig. S16, ESI‡).…”

Section: Resultsmentioning

confidence: 99%

Non-invasive monitoring of the growth of metal–organic frameworks (MOFs) via Raman spectroscopy

Chong

Parrott

Ashworth

et al. 2023

Phys. Chem. Chem. Phys.

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“…Various "image slicing" techniques -fiber optic spot-to-line converters, the Bowen-Walraven slicer [1,2], glass waveguides [3,4], and coded apertures [5] -are sometimes used instead of slits in an attempt to overcome this throughput-resolution tradeoff. These technologies can improve spectrometer performance in some cases, but they impose additional limitations upon the overall spectroscopic performance of the instrument [6].…”

Section: Introduction To the High Throughput Virtual Slit Conceptmentioning

confidence: 99%