Optical waveguide and room temperature high-quality nanolasers from tin-catalyzed CdSSe nanostructures
Optical waveguide and room temperature high-quality nanolasers from tin-catalyzed CdSSe nanostructures
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DOI：
10.1088/1361-6528/aab082
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发表时间：
2018-05
期刊：
影响因子：
3.5
通讯作者：
Pengfei Guo;Xia Shen;Baolong Zhang;Haibin Sun;Z. Zou;Wenchao Yang;Ke Gong;Yongsong Luo
中科院分区：
文献类型：
--
作者：
Pengfei Guo;Xia Shen;Baolong Zhang;Haibin Sun;Z. Zou;Wenchao Yang;Ke Gong;Yongsong Luo
发展了一种简单的两步CVD方法，实现了高质量锡催化CdSSe合金纳米线的生长。微观结构表征表明，这些线是高品质的结晶纳米结构。这些纳米结构的局部光致发光的调查显示，在656 nm的半峰全宽为22.3 nm的典型的带边发射。对单个纳米线的光波导沿着测量表明，在传输102 μm后，被引导光的输出信号有一个快速的线性衰减，并伴随着最大红移约109 meV。这种明显的红移是由光传输过程中强烈的带尾吸收引起的。此外，光泵纳米激光器在室温下成功地实现了基于这些独特的导线，进一步证明了从自发辐射的受激发射的实现，促进了泵浦功率强度。这项工作可能会找到一个简单的路线，以制造上级纳米线的波导和集成光子器件的应用。
A simple two-step CVD method is developed to realize the growth of high-quality tin-catalyzed CdSSe alloy nanowires. Microstructural characterizations demonstrate that these wires are high-quality crystalline nanostructures. Local photoluminescence investigation of these nanostructures shows a typical band edge emission at 656 nm with a full-width at half-maximum of 22.3 nm. Optical waveguide measurement along an individual nanowire indicates that the output signal of the guided light has a rapid linear decrease accompanied with maximum red-shift about 109 meV after the transmission of 102 μm. This obvious red-shift is caused by the intensive band-tail absorption during the optical transmission process. Moreover, optically pumped nanolasers are successfully realized at room temperature based on these unique wires, further demonstrating the achievement of stimulated emission from spontaneous emission, promoted by the pump power intensity. This work may find a simple route to the manufacture of superior nanowires for applications in waveguide and integrated photonic devices.