Title :
Improved short-pulse pumping of stimulated Raman scattering in lead vapor
Author :
Marshall, Larry R. ; Piper, James A.
Author_Institution :
Centre for Lasers & Applications, Macquarie Univ., NSW, Australia
fDate :
10/1/1990 12:00:00 AM
Abstract :
Improved efficiency for short pulse stimulated Raman scattering (SRS) in Pb vapor is obtained using accumulation of gain between a closely spaced pulse pair. The peak power conversion efficiency of the delayed pulse is increased to 40%, in contrast to 15% for a single pulse. Numerical modeling gives good agreement with observation, and suggests that this enhancement is caused by the continued presence of coherent excitation produced by the first pulse. The dependence of the enhancement in delayed-pulse efficiency on Xe buffer gas pressure in the Pb-vapor cell is attributed to changes in the transient response time T2 of the Pb medium with Xe pressure
Keywords :
high-speed optical techniques; lead; optical pumping; stimulated Raman scattering; 40 percent; Pb vapor; Pb-Xe; buffer gas pressure; closely spaced pulse pair; coherent excitation; delayed-pulse efficiency; peak power conversion efficiency; short-pulse pumping; stimulated Raman scattering; transient response time; Delay; Fiber lasers; Frequency conversion; Laser applications; Lead; Optical scattering; Pump lasers; Raman scattering; Stimulated emission; Transient response;
Journal_Title :
Quantum Electronics, IEEE Journal of
