"For Credible Lasers, See Inside." THE LASER IS LESS THAN three years younger than the space age. Just days after the Soviet Union launched Sputnik I on October 4, 1957, Charles Townes and Gordon ...

A third option is to frequency-double a gas laser to shift its output wavelength from around 10 μm to 5 μm. “Quantum cascade lasers can generate milliwatt continuous powers or multiwatt peak ...

Like all lasers, nitrogen lasers typically consist of three basic parts: an energy source (or pump), a laser medium (also known as a gain medium), and an optical resonator. As in most gas lasers, the ...