"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 ...

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 ...

Sensors, Vol. 24, Issue. 20, p. 6577. An invaluable text for the teaching, design, and development of gas sensor technology. This excellent resource synthesizes the fundamental principles of ...