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Optical gain and upconversion luminescence in LaF3: Er, Yb nanoparticles-doped organic–inorganic hybrid materials waveguide amplifier

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Abstract

A LaF3: Er, Yb nanoparticle-doped organic–inorganic hybrid materials waveguide amplifier is demonstrated using reactive ion etching. A maximum gain of approximately 6.8 dB is observed in a 20-mm-long waveguide. Under excitation at 976 nm, the waveguides emit a strong green upconversion luminescence. The possible upconversion mechanisms are discussed. The dependence of upconversion emission intensity on excitation power confirms a three-photon process contributes to the upconversion of the emission band 405 nm and two-photon processes for the green and red emission bands. The temperature behavior by the measurement of the fluorescence intensity ratio of the signals at 520 nm and 544 nm as a function of the pump power demonstrates a fast thermalization between the 2 H 11/2 and 4 S 3/2 levels. The influence of upconversion emission on the gain performance of the waveguide amplifier is analyzed.

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Correspondence to D. M. Zhang.

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Zhang, D., Chen, C., Wang, F. et al. Optical gain and upconversion luminescence in LaF3: Er, Yb nanoparticles-doped organic–inorganic hybrid materials waveguide amplifier. Appl. Phys. B 98, 791–795 (2010). https://doi.org/10.1007/s00340-009-3851-y

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  • DOI: https://doi.org/10.1007/s00340-009-3851-y

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