Laser (via peoplepixels)
Another great physics lesson on light from USC.
(A) Illustration of the 10-GHz laser cavity. A coin is shown for size comparison. The nonlinear fiber and diffraction grating dispersing the white light are also illustrated. (B) Real-color image of the spectrally dispersed visible part of the continuum and a magnified view of the individually resolved frequency comb modes at wavelengths of 490 nm, 540 nm, 583 nm, and 632 nm. Via.
“An optical engineer evaluates the interaction of multiple lasers that will be used aboard the Airborne Laser, a megawatt-class laser weapons system being developed to defend against ballistic missile attacks. The Directed Energy Directorate conducts research into beam-control technologies.” Via.