Effect of excited-state absorption at signal wavelength in pulsed-dye-laser amplifiers

Author

Dasgupta, K. ; Nair, L.G.

Author_Institution

Bhabha Atomic Res. Center, Bombay, India

Volume

26

Issue

1

fYear

1990

fDate

1/1/1990 12:00:00 AM

Firstpage

189

Lastpage

192

Abstract

The effect of excited-state absorption (ESA) at the laser wavelength in transversely pumped pulsed-dye-laser amplifiers is theoretically examined. Assuming steady-state conditions, it is shown that ESA along with ground-state absorption introduces a nonlinear loss term in the amplifier equation. An improved expression for the saturated gain is obtained, and it is shown that the amplifier extraction efficiency does not saturate with increase in dye-laser input power, but shows a maximum and then decreases. These theoretical results are compared with experimental measurements on copper-vapor laser-pumped dye-laser amplifiers

Keywords

dye lasers; optical losses; optical pumping; optical saturable absorption; Cu; amplifier equation; amplifier extraction efficiency; copper-vapor laser-pumped dye-laser amplifiers; dye-laser input power; excited-state absorption; ground-state absorption; laser wavelength; nonlinear loss term; optical saturable absorption; pulsed-dye-laser amplifiers; saturated gain; signal wavelength; steady-state conditions; transversely pumped pulsed-dye-laser; Absorption; Laser excitation; Laser modes; Laser theory; Laser tuning; Optical amplifiers; Optical pulses; Pulse amplifiers; Pump lasers; Steady-state;

fLanguage

English

Journal_Title

Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

0018-9197

Type

jour

DOI

10.1109/3.44932

Filename

44932