Femtosecond-scale all-optical switching in oxyfluorogallate glass induced by nonlinear multiphoton absorption.
Femtosecond-scale all-optical switching in oxyfluorogallate glass induced by nonlinear multiphoton absorption.
复制标题
非线性多光子吸收引起的氟镓酸盐玻璃中的飞秒级全光开关
DOI：
10.1039/d1ra06538f
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发表时间：
2021-09-27
期刊：
影响因子：
3.9
通讯作者：
Zhang, Long
中科院分区：
文献类型：
--
作者：
Li, Qisong;Yuan, Xinqiang;Jiang, Xiongwei;Wang, Jun;Liu, Yi;Zhang, Long
本文报道了一种新型的氧氟镓玻璃在近红外波段具有高开关效率和超快响应时间的全光开关，在光通信领域具有重要的应用价值。研究了氧氟镓玻璃的结构、光学性质以及非线性光学效应，证明了该玻璃具有良好的非线性光学性能。通过抽运探测实验，我们发现由于非线性多光子吸收引起的氧氟镓玻璃中的开关时间约为350ps，这受到近红外探测脉冲的脉冲宽度的限制。此外，这种光开关器件的最大开关幅度可以达到∼12%，这与石英玻璃形成了鲜明的对比。因此，本研究为集成光子器件的制造提供了一种合适的材料，这对促进玻璃片上光子学的应用至关重要。
Herein, all-optical switching based on a new type of oxyfluorogallate glass with high switching efficiency and ultrafast response time was reported in the near-infrared wavelength range, which is of great importance for applications in optical telecommunication. The structural and optical properties, as well as the nonlinear optical effects, of the oxyfluorogallate glass were investigated, demonstrating a good figure of merit applicable to nonlinear optical devices. Using pump–probe experiments, we found that the switching time in the oxyfluorogallate glass due to nonlinear multiphoton absorption was approximately 350 fs, which was limited by the pulse duration of the near-infrared probe pulse. Additionally, the largest on–off amplitude of this optical switching device could reach ∼12%, which is in sharp contrast to that of quartz glass. Thus, this study provides a suitable material for the manufacture of integrated photonic devices, which are crucial for promoting the application of glass on-chip photonics.
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