Tunable external cavity laser diode based on wavelength controlled self-assembled InAs quantum dots for swept-source optical coherence tomography applications at 1100 nm wavelength band
Tunable external cavity laser diode based on wavelength controlled self-assembled InAs quantum dots for swept-source optical coherence tomography applications at 1100 nm wavelength band
复制标题
基于波长控制自组装 InAs 量子点的可调谐外腔激光二极管，适用于 1100 nm 波段的扫频光学相干断层扫描应用
DOI：
10.1117/12.2509984
复制
发表时间：
2019
期刊：
影响因子：
--
通讯作者：
Hogg R
中科院分区：
文献类型：
--
作者：
Hogg R
我们制作并表征了一种用于扫描源光学相干层析成像的包含自组装InAs量子点(QD)的增益芯片的光栅耦合外腔激光器。通过控制自组装的InAs量子点的发射波长，获得了1-1.1μm波段的可调谐激光，代表了生物组织吸收和散射的最佳平衡。在含有四个InAs量子点层的GaAs基波导层上制备了直边和J型边发射脊波导。采用准Littrow结构的衍射光栅作为光纤耦合二极管的外腔。量子点二极管的电致发光光谱表明，J形RWG中出现了宽带放大的自发辐射，而直线RWG中出现了法布里-珀罗激光。然后将外腔引入J形RWG二极管，从J形RWG QD增益芯片获得了65 nm的调谐范围，调谐范围约为1100 nm。
We fabricated and characterized a grating-coupled external cavity laser with gain chips including self-assembled InAs quantum dots (QDs) for swept-source optical coherence tomography applications. By controlling the emission wavelength of the self-assembled InAs QDs, tunable lasing at a wavelength band of 1–1.1 μm was obtained, which represents an optimal balance between absorption and scattering in biological tissues. Straight and J-shaped edgeemitting ridge waveguides (RWGs) were fabricated on a GaAs-based waveguide layer containing four InAs QDs layers. A diffraction grating with the quasi-Littrow configuration was employed as an external cavity for the fiber-coupled diodes. Electroluminescence spectra from the QD-based diodes revealed that broadband amplified spontaneous emissions appeared in a J-shaped RWG, whereas Fabry–Perot lasing occurred in the straight RWG. The external cavity was then introduced for the diode with a J-shaped RWG, and a tuning range of 65 nm centered at approximately 1100 nm was obtained from the QD gain chip with the J-shaped RWG.
影响因子：
3.7
作者：
Ozaki, Nobuhiko;Takeuchi, Koichi;Hogg, Richard A.
通讯作者：
Hogg, Richard A.
影响因子：
1.7
作者：
Ripandelli, G;Coppe, A M;Stirpe, M
通讯作者：
Stirpe, M
用于光学相干断层扫描应用的自组装量子点扫频激光源
DOI：
--
发表时间：
2012
期刊：
Biomedical optics
影响因子：
--
作者：
N. Peyvast;D. Childs;N. Krstajić;Z. Lu;S. Matcher;D. Livshits;A. Shkolnik;I. Krestnikov;R. Hogg
通讯作者：
R. Hogg