Optics and Photonics News

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Optical Security Enhanced with Tunable-Resonator Upconverted Emission Color Printing

A standard check for counterfeits is viewing bank notes under ultraviolet or infra-red light.

14 May 2019

Laser Experiment Exposes Site of Efficiency Loss in Copper Oxide Photocathodes

Photocathodes and solar cells composed of copper oxide (Cu2O) might theoretically attain high efficiencies for solar energy conversion. In reality, however, large losses happen.

10 May 2019

Paper- and Carton Mill Varel to Implement Procemex Camera Systems - How to Achieve Fewer Defects in Production Processes?

Papier- und Kartonfabrik Varel reduced web breaks to a minimum with the implementation of Procemex web monitoring and inspection systems.

From Procemex GmbH 8 May 2019

Powerful Encoder Switches Polarization One Billion Times per Second

Scientists have created a simple and stable device to produce the quantum states essential for quantum key distribution. The device could make it more real-world to form a global data network that uses this very secure technique of encryption to safeguard everything from credit card transactions to texts.

7 May 2019

EVT at the Control 2019

The EyeVision software offers many new and already well known features.

From EVT Eye Vision Technology 6 May 2019

Researchers Develop a New, Compact Method for Sculpting Super-Fast Light Pulses for Practical Applications

Envisage shaping a light pulse in any plausible way—stretching it, compressing it, dividing it in two, changing the direction of its electric field, or altering its intensity.

3 May 2019

CMU’s 2019 Impact-a-Thon Showcases Light Solutions for Darkness

Camps and villages that are off the grid become more hazardous and tough to work at night without any light source. The 2019 Rothberg Catalyzer Impact-a-Thon at Carnegie Mellon University challenged student teams to develop lighting solutions for requisite areas, independent of electrical power grids.

3 May 2019

New Method to Enhance Simple Color Tuning of LED Bulbs

A new method―the outcome of an international partnership of researchers from Lehigh University, West Chester University, Osaka University and the University of Amsterdam―could make way for monolithic incorporation for basic color tuning of a light bulb, according to Volkmar Dierolf, Distinguished Professor and Chair of Lehigh’s Department of Physics, who participated in the research.

29 Apr 2019

Elementary Mathematics Brings Star Trek's Holodeck Closer to Reality

For many years we have been hearing that holographic technology is one step closer to realizing Star Trek's famous Holodeck, a virtual reality stage that simulates any object in 3D as if they are real. Sadly, 3D holographic projection has never been realized.

26 Apr 2019

Researchers Discover How Light Stimulates Brain Activity

Optogenetics uses light to regulate brain processes. It is based on light-regulated proteins such as channelrhodopsin-2, an ion channel that opens when it is uncovered to light, thus triggering cellular processes.

24 Apr 2019