State Key Laboratory of Luminescent Materials and Devices, and Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques, South China University of Technology, Guangzhou 510641, China.
Key Laboratory of Shock Wave and Detonation Physics, Institute of Fluid Physics, CAEP, Mianyang 621900, China.
Sci Rep. 2017 Apr 3;7:45650. doi: 10.1038/srep45650.
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 LaF: Tm (Er) 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.
光学调制是光子学中用于网络数据处理的关键操作，旨在克服传统电子互连方法在速度、能量消耗、色散和串扰方面的信息瓶颈。然而，由于光子之间的弱相互作用，需要一种简便的物理方法来有效地控制光子-光子相互作用。在此，我们证明了含有 LaF: Tm（Er）纳米晶的透明玻璃陶瓷可以在两个电信窗口（0.8-1.8μm）的双波长两步激发下实现蓝/绿光上转换荧光的快速-慢速光学调制。我们观察到绿色（蓝色）上转换荧光强度的调制超过 1500%（800%），以及绿色（蓝色）上转换荧光信号的快速响应为 280μs（367μs）和慢速响应为 5.82ms（618μs）。从稀土单掺杂玻璃陶瓷中在电信窗口操纵激光进行快速-慢速光学调制的成功可能会在全光光纤通信领域得到应用。
