共查询到19条相似文献,搜索用时 78 毫秒
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热问题是制约垂直腔面发射半导体激光器(VCSEL)的关键难题之一。为改善垂直腔面发射激光器的热特性,提高输出功率,设计并制备了一种新型内腔接触式结构VCSEL。在出光孔径为16μm时,同时制备传统结构和新型结构两种器件并对其进行测试,传统结构VCSEL的阈值电流为11.5 mA,当注入电流为34 mA时,最大输出功率达到7.3 mW;新结构器件的阈值电流为9 mA,当注入电流为35 mA时,最大输出功率达到10.2 mW;新结构的阈值电流降低了21.7%,最大输出功率提高了28%。结果表明,这种内腔接触式电极结构有望改善器件的热特性和光电性能。 相似文献
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垂直腔面发射激光器的动态特性分析 总被引:4,自引:1,他引:4
本文给出了动态的垂直腔面发射速率方程,并由此推出了瞬态下的衰减因子和张弛振荡频率和计算公式,以及小信号调制下的光子、载流子的响应函数表达式。计算结果表明,在瞬态下衰减因子随β的增加明显变大,它使张弛振荡过程变短;在小信号调制下,多量子阱的周期增益结构比一般的垂直腔面发射结构有更大的调制带宽。 相似文献
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根据垂直腔面发射激光器(VCSEL)的工作特性,设计了一种新型的易于实验室普及使用的VCSEL特性测试系统,并对VCSEL进行测试,得到了相关测试曲线。该系统使用方便,成本适中,有重要的实际应用价值。 相似文献
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1 引 言 光电子技术在网络、存储器等方面的应用与多媒体信息社会的发展息息相关 ,对信息社会的发展始终起着至关重要的作用。在世界范围内的信息基础设施配置中 ,人们对以光纤通信为代表的光电子技术寄予厚望。瞬间传送处理图像等大规模信息技术愈益重要 ,在并行传递空间信息的超并行光传输系统、连接多台计算机或LSI芯片的并行光互连及光并行信息处理系统中 ,新兴的并行光电子技术起主导作用。要实现充分利用光的并行性的系统 ,大规模地进行二维集成化的并行光器件十分重要。为适应这种需求 ,人们开始探索一种新型结构的半导体激… 相似文献
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SUN Yan-fang LI Te NING Yong-qiang QIN Li YAN Chang-ling SHAN Xiao-nan LU Guo-guang HE Chun-feng WANG Chao LIU Yun TAO Ge-tao LIU Jun WANG Li-jun 《光机电信息》2005,(4):17-23
The development and application of vertical-cavity surface-emitting lasers (VCSELs) are summarized in this paper. The emphasis is focused on the high power single and 2-D arrays bottom-emitting VCSELs with a wavelength of 980nm. A distinguished device performance is achieved. The maximum continuous-wave (CW) output power of large aperture single devices with active diameters up to 500μm is as high as 1.95W at room temperature, which is to our knowledge the highest value reported for a single device. Size dependence of the output power, the threshold current and the differential resistance are discussed. A 16 elements array with 200μm aperture size (250μm center spacing) of individual elements shows a CW output power of 1.32W at room temperature. 相似文献
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报道980nm大功率底发射垂直腔面发射激光器的结构、研制及器件的阈值电流、输出功率和光谱特性.在室温(24℃)下,5A连续电流工作时,出光孔径400μm的器件激射波长为984.1nm,输出功率达到1.42W,是目前所能见到报道中最高的.研究了出光孔径600μm的器件在连续工作时,激射波长、光谱半高宽随注入电流的变化以及在重复频率100Hz,脉冲宽度50—1000μs条件下的输出功率、效率与注入电流的关系. 相似文献
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Zhang Xing Ning Yongqiang Sun Yanfang Zhang Yan Liu Guangyu Peng Hangyu Li Zaijin Qin Li Liu Yun Wang Lijun 《半导体学报》2010,31(3):034006-034006-4
The influence of external optical feedback (OFB) on the light-current characteristics of the vertical-cavity surface-emitting lasers (VCSELs) was investigated theoretically and experimentally. By calculating the OFB sensitivity parameter, the OFB sensibility of the VCSELs was compared with the edge emitting lasers. Based on the compound cavity theory, the light-current characteristic parameters of the VCSELs with external OFB, such as the threshold current and the slope efficiency, were calculated. The experimental results indicated that the threshold current of the VCSELs with different DBR reflectivities decreased to different degrees, accompanied with a decrease of slope efficiency when under 10% feedback ratio of the external OFB, which is in good agreement with the theoretical calculation. 相似文献
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为了研究垂直腔面发射激光器偏振转换特性,基于自旋反转模型,数值研究了正交光注入下1550nm垂直腔面发射激光器频率诱导偏振开关及双稳特性。结果表明,在正交光注入下,连续改变注入光与激光器光场内x线性极化模的频率失谐可诱导产生两类偏振开关和偏振双稳现象,且注入光强与偏振电流的变化都显著影响双稳宽度和激光器的输出特性;合理选择操作条件,可实现对1550nm垂直腔面发射激光器频率诱导偏振开关及双稳的控制。这一结果对垂直腔面发射激光器在全光开关和全光存储等领域的应用具有参考价值。 相似文献
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The vertical-cavity surface-emitting laser (VCSEL) is the most suitable light source for many optoelectronic applications
because of its planar nature. The design of large VCSEL arrays requires accurate modeling of device characteristics. In this
paper, we present a thermal model to analyze the dependence of VCSEL threshold current and light-output characteristics on
aperture size. For both 850-nm and 980-nm VCSELs, a linear dependence of threshold current on device area is observed for
oxidized aperture sizes with diameters between 5 μm and 25 μm. Good agreement between theoretical and experimental light-output
characteristics is observed using a simple thermal model. 相似文献
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H. Q. Hou M. Hagerott Crawford B. E. Hammons R. J. Hickman 《Journal of Electronic Materials》1997,26(10):1140-1144
We present a study on the growth of visible (∼700 nm) vertical-cavity surface-emitting lasers (VCSELs) by metalorganic vapor
phase epitaxy. The structure was based on AlGaAs for both the quantum well active region and the distributed Bragg reflectors.
Photoluminescence intensity from AlGaAs quantum wells was optimized vs the substrate misorientations from the (100) surface.
The doping efficiency for n-type by Si and p-type by C was studied as a function of the substrate misorientation and the growth temperature. High-quality VCSEL materials
were grown on (311)A substrates. The structure was processed by selective oxidation, and high-performance VCSELs emitting
at ∼700 nm were achieved in a continuous-wave mode at room temperature. 相似文献
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The use of cavity to manipulate photon emission of quantum dots (QDs) has been opening unprecedented opportunities for realizing quantum functional nanophotonic devices and quantum information devices.... 相似文献
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垂直腔面发射激光器DBR结构参数的优化设计 总被引:4,自引:0,他引:4
采用光学传递矩阵法 ,研究了生长偏差对分布布拉格反射 (DBR)结构反射特性的影响 ,并探讨了两种DBR结构改进方案。结果表明 ,周期厚度偏差将使DBR反射谱发生较大偏移 ,在相位匹配条件下减小高折射层厚度可以降低DBR吸收损耗、提高反射率 ,反向改变顶层和底层DBR周期厚度可以提高垂直腔面发射激光器边模抑制比 相似文献