Investigation Of Pumping Dynamics In Rare Earth Doped Solid State Laser Materials

Richard C. Powell; Michael L. Kliewer

doi:10.1117/12.951864

25 July 1989 Investigation Of Pumping Dynamics In Rare Earth Doped Solid State Laser Materials

Richard C. Powell, Michael L. Kliewer

Proceedings Volume 1062, Laser Applications in Meteorology and Earth and Atmospheric Remote Sensing; (1989) https://doi.org/10.1117/12.951864
Event: OE/LASE '89, 1989, Los Angeles, CA, United States

Abstract

The pumping dynamics of rare earth doped solid state laser materials are discussed here with an emphasis on the effects occurring in laser-pumped laser systems. A tunable alexandrite laser is used as the pump source for Nd³⁺-doped laser materials. It is found that the slope efficiency of the Nd laser operation depends strongly on the wavelength of the pump laser. For pump wavelengths resulting in low slope efficiencies strong fluorescence emission is observed from the sample in the blue-green spectral region. This is attributed to the excited state absorption of pump photons which occurs during radiationless relaxation from the pump band to the metastable state. It is shown to be an important loss mechanism in laser-pumped laser systems for specific pump wavelengths.

Citation Download Citation

Richard C. Powell and Michael L. Kliewer "Investigation Of Pumping Dynamics In Rare Earth Doped Solid State Laser Materials", Proc. SPIE 1062, Laser Applications in Meteorology and Earth and Atmospheric Remote Sensing, (25 July 1989); https://doi.org/10.1117/12.951864

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