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An adaptive optics system, which has been more than a decade in the making, has seen first light as part of the European Southern Observatory’s Very Large Telescope on the Cerro Paranal mountain in Chile
Fibre laser manufacturer IPG Photonics has generated revenue of $369.4 million in the second quarter of 2017, a significant 46 per cent increase year-over-year. Coherent posted Q3 sales of £464.1 million
The fluorescence excitation spectra of single organic molecules in a solid state crystal are measured at cryogenic temperatures using a single frequency tunable laser light source based on optical parametric oscillator technology. This laser exhibits promising features as a light source for spectroscopy applications, including a broad tuning range from 450 to 650 nm, narrow linewidth < 1 MHz and mode-hop-free tuning over > 25 GHz.
Excitation-emission spectroscopy becomes increasingly useful in the study of photo-luminescent materials. The spectral selectivity of the technique enables the quantification of multiple emitting sites in rare-earth doped crystals as well as the rapid acquisition of polycyclic aromatic hydrocarbons (PAH) in contaminated water. In order to obtain a complete spectral fingerprint via excitation-emission spectroscopy, scans at multiple excitation wavelengths over the emission spectra are required.