A 40 % slope efficiency from a pulsed Er3+:LiYF4 is demonstrated under cw Timpphire pumping. This value clearly exceeds the Stokes limit of 35% due to energy recycling fiom lower to upper laser level. With reduction of the pump-pulse duration a decrease of the slope efficiency and an increase of the threshold is experimentally observed and confirmed by a computer simulation. An approximate function following an exponential law can be used to describe the dependence of the slope efficiency on the pump-pulse duration.
|Number of pages||3|
|Publication status||Published - Jan 1996|
|Event||Advanced Solid State Lasers, ASSL 1996 - San Francisco, United States|
Duration: 31 Jan 1996 → 2 Feb 1996
|Conference||Advanced Solid State Lasers, ASSL 1996|
|Period||31/01/96 → 2/02/96|
- IOMS-APD: Active Photonic Devices