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Raman spectroscopy has huge potential for use in medicine, as David Stuart finds out
Wasatch Photonics has expanded its Cobra OCT spectrometer product line with a new OCT spectrometer designed specifically for ease of integration
The new SERS substrates are free of contamination, delivering superior sensitivity and specificity. (Image: Nikalyte)
The partners are evaluating and testing a novel surface-enhanced Raman spectroscopy substrate for trace detection of materials.
Transmission gratings open up many design options for the optical designer. In this tech note, we consider one special type: volume phase holographic (VPH) gratings. With benefits ranging from superior optical performance and design flexibility to robustness and consistency, VPH gratings are ideal for applications like laser pulse compression, spectroscopy, optical coherence tomography, and astronomy.
Notal Vision, an ophthalmic diagnostic services company, has started a clinical trial in the United States to advance the commercialisation of its home-based, patient-operated, spectral-domain optical coherence tomography (SD-OCT) system
Raman spectroscopy is emerging as a rapid, portable tool to test premium liquors for evidence of adulteration or substitution –problems relevant in the rising production of pisco in Peru, where the liquor must originate from specific grape varieties and regions. Here we demonstrate the ability of 1064 Raman to distinguish pure pisco from mixtures, identify the specific grape variety, and quantify both ethanol and methanol content with a high degree of accuracy – thus validating origin, quality, and safety.
Wasatch Photonics has expanded its Cobra OCT spectrometer product line to include new models for 550nm vis-OCT and long-range 800nm OCT imaging
Does building your own OCT spectrometer really get you the clearest image? Creating a high-performance spectrometer for SD-OCT imaging requires a deep understanding of the finer points of both OCT theory and spectrometer design. In this tech note, we'll explain the most important parameters and contributors, then model the best available off-the-shelf lenses vs custom-designed optics to see just how the two compare. The difference in performance will surprise you…
Traditional thinking is that compact spectrometers do not offer the sensitivity or speed needed to compete with benchtop fluorimeters for many fluorescence measurements. We explain how limit of detection (LOD) and limit of quantitation (LOQ) are defined and measured, and challenge that preconception by demonstrating picomolar LOD for fluorescein with a compact, cost-effective spectrometer capable of capturing 50 ms scans with ease.
David Creasey details Wasatch Photonics’ history with Jessica Rowbury and discusses the challenges and opportunities going forwards
Organoid imaged with Andor’s desktop confocal microscope system, the BC43. Credit: Andor
As microscopes become ever more powerful, a growing band of businesses are racing to make the latest technologies more accessible and more affordable, reports Rebecca Pool
Illustration of a three-dimensional crystal with various types of confining centres. (a) Crystal with four confining centres, each trapping waves (yellow) in all three dimensions simultaneously. (b) Crystal with a linear confining centre where waves can propagate in one dimension, analogous to an optical fibre. (c) Crystal with a planar confining centre where waves can propagate in two dimensions, analogous to a 2D electron gas. (Image: Vos et al.)
Newly discovered fundamental rules have been embedded into software to dramatically optimise the design of photonic integrated circuits
