Optical properties of Tm3+ ions in alkali germanate glass |
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| Affiliation: | 1. NASA Langley Research Center, 5 North Dryden Street, Mail Stop 468, Hampton, VA 23681, United States;2. NP Photonics, Tucson, AZ 85747, United States |
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| Abstract: | Tm-doped alkali germanate glass is investigated for use as a laser material. Spectroscopic investigations of bulk Tm-doped germanate glass are reported for the absorption, emission and luminescence decay. Tm:germanate shows promise as a fiber laser when pumped with 0.792 μm diodes because of low phonon energies. Spectroscopic analysis indicates low non-radiative quenching and pulsed laser performance studies confirm this prediction by showing a quantum efficiency of 1.69. |
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