Several Pr3+-doped chloride crystals have been tested spectroscopically for suitability as 1300-nm optical amplifiers operating on the 1G4 - 3H5 transition. 1G4 lifetimes are much longer than in fluoride hosts, ranging up to 1300 μsec and suggesting a near-unity luminescence quantum yield. Emission spectra are typically broad (FWHM ~ 70 nm) and include the 1310-nm zero-dispersion wavelength of standard telecommunications fiber.

© 1995 Optical Society of America

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