The active medium of the quantum cascade type of this device is a semiconductor, and the excimer type uses noble gases.
The active medium of the quantum cascade type of this device is a semiconductor, and the excimer type uses noble gases. Q-switching in these devices can cause intense bursts of output. These devices were used by Steven Chu to cool and trap atoms, and they were first created by Theodore Maiman using a ruby rod. These devices rely on more atoms existing in the higher energy state than the lower energy state, known as population inversion. For 10 points, name this device whose name is an acronym of light amplification by stimulated emission of radiation.
The active medium of the quantum cascade type of this device is a semiconductor, and the excimer type uses noble gases.
lasers [or Light Amplification by Stimulated Emission of Radiation]