Subnanosecond multiphonon relaxation of divalent copper impurities in LiTaO3 |
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| Authors: | D. von der Linde D.H. Auston A.M. Glass K.F. Rodgers |
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| Affiliation: | Bell Laboratories, Murray Hill, New Jersey 07974, U.S.A. |
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| Abstract: | The temperature dependence of the lifetime of the excited 2T2 state of the Cu2+ ion in a LiTaO3 crystalline host has been measured with picosecond optical pulses. Its value ranges from 450 psec at 22°K to 10 psec at 423°K. Consistent with this result is the observation of weak fluorescence at 1.75 μm having a low temperature quantum efficiency of ～ 10?6. The experimental results are in reasonably good agreement with recent theoretical models based on strong coupling of the Cu2+ impurities to the host lattice. |
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