In physics, specifically statistical mechanics, a population inversion occurs while a system (such as a group of atoms or molecules) exists in a state...

Look up Inversion or inversion in Wiktionary, the free dictionary. Inversion or inversions may refer to: Inversion (artwork), a 2005 temporary sculpture...

of a population inversion. In 1955, Prokhorov and Basov suggested optical pumping of a multi-level system as a method for obtaining the population inversion...

An inversion is a chromosome rearrangement in which a segment of a chromosome becomes inverted within its original position. An inversion occurs when a...

energy states than in the higher energy states. However, when a population inversion is present, the rate of stimulated emission exceeds that of absorption...

laser, the active gain medium must be changed into a state in which population inversion occurs. The preparation of this state requires an external energy...

other neon transitions were investigated to identify ones in which a population inversion can be achieved. The 633 nm line was found to have the highest gain...

specific proportions vary according to the particular laser. The population inversion in the laser is achieved by the following sequence: electron impact...

positive-temperature system. A standard example of such a system is population inversion in laser physics. Thermodynamic systems with unbounded phase space...

Lasing without inversion (LWI), or lasing without population inversion, is a technique used for light amplification by stimulated emission without the...