Components of a typical laser include gain medium, laser pumping energy and resonant optical cavity. The output frequency of most lasers is fixed or within a small range, and it is difficult to ...

Modern technology uses many frequencies of electromagnetic radiation for communication, including radio waves, TV signals, microwaves and visible light. Now, a University of Utah study shows how ...

Higher frequencies mean faster data transfer and more powerful processors. Technically, however, it is anything but easy to keep increasing clock rates and radio frequencies. New materials could solve ...

Evidence to date finds that the type of radiation you get from your phone isn't likely to increase risk of brain cancer. We asked a cancer expert to put tech's health impacts into context. Jessica was ...

Containing the electromagnetic radiation generated by electronic components is a key consideration for designers of electronic devices, but today’s metal-based shielding materials have their downsides ...