spectroscopy

Ams Osram’s multi-junction VCSELs are helping to improve automotive lidar. Credit: Ams Osram

VCSELs rev up for life in the fast lane

Multi-junction vertical-cavity surface-emitting lasers are likely to displace LEDs and edge-emitting lasers in sensing, finds Andy Extance

Metalens imaging simulation in Synopsys BeamProp BPM tool. Credit: Synopsys

Scaling challenges of metasurfaces

Greg Blackman explores the optical design approaches for modelling metasurfaces

The lowdown on LIBS: expanding capabilities with compact, air cooled lasers

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Laser-induced breakdown spectroscopy (LIBS) is an atomic emission spectroscopy technique that uses a short laser pulse to create a micro-plasma on a sample surface. It is used for the rapid chemical analysis of materials in a host of industrial applications. This white paper introduces a very compact, air-cooled, pulsed laser and demonstrates how it can be effectively used in conventional LIBS experimental set-ups for identifying metals.

An infrared beam from a quantum cascade laser excites glucose molecules in skin, which are then detected via DiaMonTech’s photothermal deflection technique. Credit: DiaMonTech

Glucose monitoring gains from MIR sensing

David Stuart on the health benefits of mid-infrared spectroscopy

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