Abstract
Analysis of absorption, fluorescence, and site- selective excitation spectra of Er, Er-Yb, and Er- Cr in Ca5(PO4)3F suggests that this Er doped host has favorable spectral characteristics for producing eye-safe stimulated emission. Passive Q-switch performance of an Er:phoshate glass laser using Er:FAP has been demonstrated. Q- switched output of 6 mJ in a single 500 ns wide pulse with 19% efficiency was obtained.
© 1993 Optical Society of America
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