Local Chemistry Engineering in Doped Photonic Glass for Optical Pulse Generation
Local Chemistry Engineering in Doped Photonic Glass for Optical Pulse Generation
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DOI：
10.1002/adom.201801413
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发表时间：
2019-01
影响因子：
9
通讯作者：
Jiejie Chen;Zhuo Shi;Shifeng Zhou;Zaijin Fang;Shichao Lv;Haohai Yu;J. Hao;Huaijin Zhang;
中科院分区：
文献类型：
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作者：
Jiejie Chen;Zhuo Shi;Shifeng Zhou;Zaijin Fang;Shichao Lv;Haohai Yu;J. Hao;Huaijin Zhang;
通过短程到中程化学设计控制多组分光子玻璃的光学响应，已经开发出具有高效受激辐射、宽带光放大和灵敏光学传感的高性能器件。然而，全光纤配置的光调制的成功受到难以创建可以动态切换光-物质相互作用的智能结构单元的限制。在这里，报告了一种局部化学设计策略，可以帮助实现动态能量存储及其可控释放，基于通过玻璃结晶同时管理过渡金属掺杂剂的化学状态和配体场。理论分析表明，四能级结构，如四面体Cr 4+，可以实现有效的光子-电子-光子转换。实验数据进一步表明，这种配置可以在纳米结构玻璃中稳定。采用熔管法成功制备了具有完美芯包层结构的纳米结构光纤。同时还证明了玻璃中的光学调制函数，其σgs和σes值分别为（1.39 ± 0.03）× 10−16和（1.20 ± 0.02）× 10−16 cm 2。首次研制出工作波长为1.06 μm、脉宽为176 ns的脉冲激光原理器件。
The control of the optical response of multicomponent photonic glass through short‐ to medium‐range chemistry design has led to the development of high‐performance devices with efficient stimulated radiation, broadband optical amplification, and sensitive optical sensing. However, the success of optical modulation with an all‐fiber configuration is limited by the difficulty in creating smart structural units that can dynamically switch light–matter interactions. Here, a local chemistry design strategy is reported that can help realize dynamic energy storage and its controllable release, based on the simultaneous management of the chemical state and ligand field of transition‐metal dopant through glass crystallization. The theoretical analysis indicates that a four‐level configuration, such as that of tetrahedral Cr4+, can enable efficient photon–electron–photon conversion. Experimental data further reveal that this configuration can be stable in nanostructured glass. A nanostructured fiber with perfect core‐clad configuration is successfully fabricated by the melt‐in‐tube approach. The optical modulation function in bulk glass with estimated σgs and σes values of (1.39 ± 0.03) × 10−16 and (1.20 ± 0.02) × 10−16 cm2, respectively, is also demonstrated. Therefore, a principle pulse laser device with operation wavelength at 1.06 µm and pulse duration of 176 ns is fabricated for the first time.