The photon avalanche laser
- 1 January 1986
- proceedings article
- Published by AIP Publishing in AIP Conference Proceedings
- Vol. 146 (1) , 142-144
- https://doi.org/10.1063/1.35881
Abstract
Laser output at 4.9 μm has been obtained from a Pr doped LaCl3 crystal. Pump laser energy at 529 nm is coupled into the crystal via the photon avalanche process. This process involves metastable state ion absorption of a pump photon and subsequent ion‐ion energy transfer. The latter step generates two metastable state ions (self‐induced absorption). This highly nonlinear process is characterized by a sharp onset with pump intensity and, at higher intensities, depopulation of the ionic ground state. Experimental results will be compared with predictions from an existing rate equation model.Keywords
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