The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.
a pulsed light source used in optical pumping of lasers. Pumping lamps are located in the immediate vicinity of the active medium; to improve use of the light, pumping lamps are surrounded by a reflective housing.
The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.