Title :
Measurements of gain and absorption saturation in an electron-beam-pumped KrF amplifier
Author :
Thompson, David C. ; Fedosejevs, Robert ; Offenberger, Allan A. ; Santiago, Jaime P. ; Manjunath, Hassan R.
Author_Institution :
Dept. of Electr. Eng., Alberta Univ., Edmonton, Alta., Canada
fDate :
10/1/1989 12:00:00 AM
Abstract :
A detailed study of energy deposition and the amplification and absorption characteristics of an electron-beam-pumped KrF laser is discussed. In particular, the gain and absorption were measured over the 241-257-nm wavelength range with and without extraction, to investigate saturation effects. Detailed measurements were made of pulsed power characteristics and energy deposition in the laser medium. Peak deposition in the medium is ~70 J/l in a 62-ns pulse for a power density of ~1.1 MW/cm3. Measurements of gain and absorption, using a frequency-doubled tunable dye laser give a small signal net gain of 9.9±0.5%/cm, a small-signal absorption coefficient of 1.6±0.1%/cm, and a nonsaturable absorption coefficient of 1.1±0.4%/cm. These results are compared with other experimental measurements and with the results of numerical modeling
Keywords :
electron beam applications; excimer lasers; gain measurement; krypton compounds; laser transitions; laser variables measurement; optical saturable absorption; 241 to 257 nm; KrF laser; absorption saturation; electron-beam-pumped KrF amplifier; energy deposition; frequency-doubled tunable dye laser; gain measurements; laser medium; mediums peak deposition; nonsaturable absorption coefficient; numerical modeling; power density; pulsed power characteristics; small signal net gain; small-signal absorption coefficient; wavelength range; Absorption; Energy measurement; Gain measurement; Optical pulses; Particle measurements; Power measurement; Pulse amplifiers; Pulse measurements; Pulsed laser deposition; Wavelength measurement;
Journal_Title :
Quantum Electronics, IEEE Journal of
