Controllable optical modulation of blue/green up-conversion fluorescence from Tm³⁺ (Er³⁺) single-doped glass ceramics upon two-step excitation of two-wavelengths.

ABSTRACT: Optical modulation is a crucial operation in photonics for network data processing with the aim to overcome information bottleneck in terms of speed, energy consumption, dispersion and cross-talking from conventional electronic interconnection approach. However, due to the weak interactions between photons, a facile physical approach is required to efficiently manipulate photon-photon interactions. Herein, we demonstrate that transparent glass ceramics containing LaF₃: Tm³⁺ (Er³⁺) nanocrystals can enable fast-slow optical modulation of blue/green up-conversion fluorescence upon two-step excitation of two-wavelengths at telecom windows (0.8-1.8 μm). We show an optical modulation of more than 1500% (800%) of the green (blue) up-conversion fluorescence intensity, and fast response of 280 μs (367 μs) as well as slow response of 5.82 ms (618 μs) in the green (blue) up-conversion fluorescence signal, respectively. The success of manipulating laser at telecom windows for fast-slow optical modulation from rear-earth single-doped glass ceramics may find application in all-optical fiber telecommunication areas.

SUBMITTER: Chen Z 

PROVIDER: S-EPMC5377312 | biostudies-literature | 2017 Apr

REPOSITORIES: biostudies-literature