Abstract: In this work, we propose a method of efficiently generating a watt-level 1.72 µm ultrafast fiber laser by using a Raman amplifier seeded by a single frequency continuous wave (CW) laser. The ...

Dermatologists explain the science behind wildly popular treatments like red light therapy, which is now available at home—for a steep price. Full-face LED masks like this one can cost up to several ...

In the United States, a Black person is 3.73 times more likely to be arrested for marijuana possession than a white person is, despite approximately equal rates of use.