Custom grisms help ‘see’ individual ~70 fs, 32 nm laser pulses A creative group of researchers has performed single-shot measurements of ultrafast extreme ultraviolet (EUV) pulses for the first time ever at the FERMI Free Electron Laser (FEL) source in Italy – and these sources aren’t easy to measure. FELs […]
Integrating Raman Spectroscopy & Holography for In-situ Detection of Microplastics Microplastics in our ocean waters are a growing problem – but how do you collect quick and effective measurements in-situ, and at the depths needed to properly understand distribution, flow, and uptake by ocean life? Filtration-based methods using FTIR and […]
Japan to Chile >> WINERED is a Warm INfrared Echelle spectrograph to Realize Extreme Dispersion and sensitivity, developed by the Laboratory of Infrared High-resolution spectroscopy (LiH) at Kyoto Sangyo University for initial use at the 1.3 m Araki Telescope at Koyama Astronomical Observatory. It was relocated to the New Technology […]
Ophthalmic imaging is an integral part of diagnostic procedures evaluating eye conditions. It enables ophthalmologists to image actual living tissue deep in the human eye at microscopic resolution and thus provides the basis for treatments of eye diseases. Optical coherence tomography, or OCT, is the method of choice for ophthalmologists […]
Wasatch Photonics VPH Gratings Look to the Stars >> Nightly, all over the world, observatories open their domes to collect light from the far reaches of the universe. The telescopes within diligently condense these precious photons for careful analysis by instruments like spectrographs, which further break down that light into […]
Exciting options for fluorescence suppression The trade off between signal strength and fluorescence background often dominates the choice of excitation wavelength for Raman spectroscopy. But what if fluorescence background could be eliminated entirely? UV Raman allows just that. In this application note, we’ll explore its advantages, the technical challenges it […]
OCTA Tutorial: How does OCT Angiography Work? OCTA, also known as OCT angiography, is a non-invasive and dye-free imaging technique that can be used to visualize blood flow in tissues in 3D. It is a variant of optical coherence tomography (OCT), an optical imaging modality first applied in ophthalmology. OCT […]
Can SERS outshine fluorescence as the technique of choice for biosensors? Explore a promising new sensor design for pH, and the impact of hydrogel matrix on performance.
High speed UHR-OCT reaches the cellular level by Cicely Rathmell Recent increases in the speed and resolution of ultrahigh resolution OCT are opening up new possibilities for in-vivo, non-contact imaging of the cellular structure of biological tissue at image acquisition rates high enough to suppress significantly image artifacts arising from […]
Raman shows its strengths for process monitoring in biotechnology as we use PLS and PCA to follow the fermentation of glucose by yeast to generate ethanol with a probe-based 785 Raman system.