作者单位
摘要
长春理工大学 高功率半导体激光国家重点实验室,吉林 长春 130022
超辐射发光二极管(SLD)具有高功率、宽光谱和低相干性等光学特性,在光纤通信、工业**、生物影像和痕量气体检测等领域具有极高的应用价值。本文聚焦于SLD的输出功率与光谱宽度特性,综合评述了量子阱、量子点近红外SLD与量子级联中红外SLD的研究进展。详细介绍了InP基量子短线、混合量子点量子阱与异维量子点量子阱等新型有源结构,以及量子点掺杂与区域混杂等相关工艺技术。最后,概述了SLD的应用前景,并对SLD的潜在研究方向和技术发展应用趋势进行了展望。
超辐射发光二极管 量子阱 量子点 量子级联 光学相干层析成像 superluminescent diode quantum well quantum dot quantum cascade optical coherence tomography 
发光学报
2023, 44(9): 1621
作者单位
摘要
长春理工大学 高功率半导体激光国家重点实验室,吉林 长春 130000
设计了带有质子注入高阻区的刻蚀微结构面发射半导体激光器结构,使得从出光口到上DBR形成环形波导,进而直接产生空心激光束输出。使用FDTD 软件计算了刻蚀微结构VCSEL的光场分布,得到的环形模式图样在不同模式数目下都能保持空心光束的特性。制备了室温下激射波长为848 nm的微结构VCSEL,并测试其输出特性。阈值电流为0.27 A,峰值功率最高可达170 mW。不同电流下的近场图都显示出非常明显的空心环形光斑,远场光强分布曲线也符合空心光束的特性。该新型VCSEL技术为空心光束甚至阵列器件的发展提供了一种新的方法。
垂直腔面发射半导体激光器 空心激光束 刻蚀结构 质子注入 vertical cavity surface emitting laser hollow laser beam etched microstructure proton implantation 
红外与毫米波学报
2023, 42(4): 462
Author Affiliations
Abstract
1 State Key Laboratory on High Power Semiconductor Lasers, Changchun University of Science and Technology, Changchun 130022, China
2 Nanofabrication Facility, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, China
GaN has been widely used in the fabrication of ultraviolet photodetectors because of its outstanding properties. In this paper, we report a graphene–GaN nanorod heterostructure photodetector with fast photoresponse in the UV range. GaN nanorods were fabricated by a combination mode of dry etching and wet etching. Furthermore, a graphene–GaN nanorod heterostructure ultraviolet detector was fabricated and its photoelectric properties were measured. The device exhibits a fast photoresponse in the UV range. The rising time and falling time of the transient response were 13 and 8 ms, respectively. A high photovoltaic responsivity up to 13.9 A/W and external quantum efficiency up to 479% were realized at the UV range. The specific detectivity D* = 1.44 × 1010 Jones was obtained at –1 V bias in ambient conditions. The spectral response was measured and the highest response was observed at the 360 nm band.
Journal of Semiconductors
2022, 43(6): 062804
作者单位
摘要
长春理工大学 高功率半导体激光国家重点实验室, 长春 130000
为了降低微盘腔半导体激光器工作时有源区的温度, 提升封装的可靠性, 基于Ansys Workbench有限元分析分别对AlN, WCu10, SiC, 石墨烯, 以及CVD金刚石过渡热沉封装的蜗线型微盘腔半导体激光器进行了热特性分析, 得到了器件工作时的温度分布以及热应力、热应变分布。结果显示, SiC封装器件的有源区温度较AlN和WCu10封装器件分别降低了2.18, 3.078℃, 并在五种过渡热沉封装器件中表现出最低的热应力, 器件热应变最小。SiC过渡热沉封装可以有效降低微盘腔半导体激光器工作时的有源区温度, 同时减少封装应力与器件应变, 从而提高器件的散热能力和可靠性。计算结果对半导体激光器单管散热及阵列集成散热均有指导意义。
微盘腔半导体激光器 过渡热沉 ANSYS热分析 热应力 micro-disk cavity semiconductor laser transition heat sink ANSYS thermal analysis thermal stress 
半导体光电
2021, 42(6): 823
Author Affiliations
Abstract
1 National Key Laboratory of Science and Technology on Tunable Laser, Harbin Institute of Technology, Harbin 150001, China
2 The 29th Research Institute of China Electronics Technology Group Corporation, Chengdu 610036, China
Optical chirp chain Brillouin optical time-domain analysis (OCC-BOTDA) has the capabilities of fast measurement, high Brillouin threshold, and freedom from the nonlocal effect; at the same time, however, it also has problems introduced by transient stimulated Brillouin scattering. The influence of the transient interaction is reflected as the broadened asymmetric Brillouin spectrum, the ghost peak, and the frequency shift of the main peak. This introduces difficulty in computing the fiber Brillouin frequency shift with good measurement accuracy. Besides, the OCC modulation causes additional noise due to the uneven amplitude response for different frequency components. In this work, we propose a high-performance OCC-BOTDA using the principal component analysis (PCA) based pattern recognition algorithm and differential pulse-width pair (DPP) technique. After building the Brillouin spectrum database (i.e., all patterns), the fiber intrinsic Brillouin frequency shift can be recognized by the PCA algorithm from a nonstandard Brillouin spectrum profile, resulting in good measurement accuracy. Meanwhile, the DPP technique, subtracting between two Brillouin signals generated by two wide-width pump pulses, is utilized to reduce the OCC modulation noise and avoid the pulse self-phase modulation effect in long-range BOTDA sensing. In the experiment, a temperature measurement with 1.3?MHz measurement precision, 4?m spatial resolution, and 5?s measurement time is achieved over a 100?km single-mode fiber.
Photonics Research
2019, 7(6): 06000652
作者单位
摘要
哈尔滨工业大学可调谐激光技术国家级重点实验室,黑龙江 哈尔滨 150001
布里渊光纤传感通过光纤中受激布里渊散射效应实现温度和应变测量,具有空间分辨率高、传感距离长和测量精度高等特点,因此分布式布里渊光纤传感成为近年的研究热点。本文通过对长距离分布式布里渊光纤传感研究进展的调研和分析,概括了长距离布里渊传感面临的主要限制因素和解决的关键技术,重点介绍了基于时分复用、频分复用、脉冲编码、宽带频率调制和图像处理算法的长距离布里渊光纤传感技术。随着长距离布里渊光纤传感器的实际工程化,对于快速测量的需求愈发显著,这将是未来长距离布里渊光纤传感的主要研究方向。
受激布里渊散射 布里渊光时域分析 光纤传感 非线性光学 stimulated Brillouin scattering Brillouin optical time domain analysis optical fiber sensing nonlinear optics 
光电工程
2018, 45(9): 170484

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