Spectroscopy and lasing of a high Nd concentration Al-phosphate glass |
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Authors: | Lempicki A Klein R Chinn S |
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Affiliation: | GTE Laboratories, Waltham, Mass., USA; |
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Abstract: | An Al-phosphate glass containing Nd3+in concentrations ranging from3 times 10^{20}to2.7 times 10^{21}ions/cm3has been prepared and investigated spectroscopically. Different ways of measuring the4F3/2→4I9/2emission cross sections yield values between1.96 times 10^{-20}and2.7 times 10^{-20}cm2. At the highest concentration the decay time is 50 μs, while the radiative lifetime is estimated to begeq446 mus. Lasing experiments were performed by pumping thin platelets of glass coaxially with a dye laser. Cross sections, losses, and differential efficiencies are derived from these experiments. The status of high concentration glasses versus stoichiometric Nd compounds is reviewed. |
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