当前位置：
X-MOL 学术
›
Laser Photonics Rev.
›
论文详情
Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
Site‐Selective Bi2Te3–FeTe2 Heterostructure as a Broadband Saturable Absorber for Ultrafast Photonics
Laser & Photonics Reviews ( IF 9.8 ) Pub Date : 2020-03-05 , DOI: 10.1002/lpor.201900409 Linfei Zhang 1, 2 , Jiefeng Liu 1, 2 , Junzi Li 1, 2 , Zhuo Wang 1 , Yingwei Wang 1 , Yanqi Ge 1 , Weilong Dong 1 , Ning Xu 1 , Tingcao He 2 , Han Zhang 1, 2 , Wenjing Zhang 1, 2
Laser & Photonics Reviews ( IF 9.8 ) Pub Date : 2020-03-05 , DOI: 10.1002/lpor.201900409 Linfei Zhang 1, 2 , Jiefeng Liu 1, 2 , Junzi Li 1, 2 , Zhuo Wang 1 , Yingwei Wang 1 , Yanqi Ge 1 , Weilong Dong 1 , Ning Xu 1 , Tingcao He 2 , Han Zhang 1, 2 , Wenjing Zhang 1, 2
Affiliation
|
Two‐dimensional (2D) materials have unique structural and optoelectronic properties and have very important applications in energy, environment, and high‐performance optoelectronic sensing. Among them, the nonlinear optical properties and related applications are hot research fields. Herein, a novel 2D Bi2Te3–FeTe2 heterostructure is successfully prepared by Fe3+ induction and site‐selective overgrowth using a seed‐mediated growth method. This heterostructure has a plate−satellite geometry with an open spatially separated surface. The Z‐scan measurement characterizes the nonlinear transmittance of the heterostructure and proves the broadband saturation absorption behavior experimentally, which are superior to those of some mainstream 2D materials. In addition, the femtosecond‐transient absorption spectra reveal an ultrashort recovery time of 1.7 ps at pump wavelength of 780 nm. By integrating the Bi2Te3–FeTe2 saturable absorber into fiber laser, a 164.7‐ps pulse and a 481‐fs pulse are produced at center wavelengths of 1064 and 1550 nm, respectively, which are better than that of the Bi2Te3 nanoplate‐based mode‐locking. A new approach for the synthesis of 2D composites with spatially separated structures is provided. It is demonstrated that the synthesized Bi2Te3–FeTe2 heterojunction can be a promising broadband nonlinear optical material in ultrafast optical applications.
中文翻译：
定点选择Bi2Te3-FeTe2异质结构作为超快光子学的宽带饱和吸收剂
二维（2D）材料具有独特的结构和光电特性，在能源，环境和高性能光电传感中具有非常重要的应用。其中，非线性光学性质及其相关应用是研究的热点。本文成功地用Fe 3+制备了新颖的二维Bi 2 Te 3 -FeTe 2异质结构。使用种子介导的生长方法诱导和定点过度生长。这种异质结构的板状卫星几何形状具有开放的空间分隔表面。Z扫描测量表征了异质结构的非线性透射率，并通过实验证明了宽带饱和吸收行为，这优于某些主流2D材料。此外，飞秒瞬态吸收光谱在780 nm的泵浦波长下显示出1.7 ps的超短恢复时间。通过将Bi 2 Te 3 –FeTe 2饱和吸收剂集成到光纤激光器中，在中心波长1064和1550 nm处分别产生164.7ps脉冲和481fs脉冲，这比Bi 2 Te的中心波长要好。3个基于纳米板的锁模。提供了一种用于合成具有空间分隔结构的二维复合材料的新方法。结果表明，合成的Bi 2 Te 3 -FeTe 2异质结可以成为超快光学应用中有希望的宽带非线性光学材料。
更新日期：2020-03-05
中文翻译：
定点选择Bi2Te3-FeTe2异质结构作为超快光子学的宽带饱和吸收剂
二维（2D）材料具有独特的结构和光电特性，在能源，环境和高性能光电传感中具有非常重要的应用。其中，非线性光学性质及其相关应用是研究的热点。本文成功地用Fe 3+制备了新颖的二维Bi 2 Te 3 -FeTe 2异质结构。使用种子介导的生长方法诱导和定点过度生长。这种异质结构的板状卫星几何形状具有开放的空间分隔表面。Z扫描测量表征了异质结构的非线性透射率，并通过实验证明了宽带饱和吸收行为，这优于某些主流2D材料。此外，飞秒瞬态吸收光谱在780 nm的泵浦波长下显示出1.7 ps的超短恢复时间。通过将Bi 2 Te 3 –FeTe 2饱和吸收剂集成到光纤激光器中，在中心波长1064和1550 nm处分别产生164.7ps脉冲和481fs脉冲，这比Bi 2 Te的中心波长要好。3个基于纳米板的锁模。提供了一种用于合成具有空间分隔结构的二维复合材料的新方法。结果表明，合成的Bi 2 Te 3 -FeTe 2异质结可以成为超快光学应用中有希望的宽带非线性光学材料。
京公网安备 11010802027423号