University-Industry Cooperative Research Program: Modelling and Design of New Generation of High Power Diode Lasers

产学研合作项目：新一代高功率二极管激光器建模与设计

• 批准号: 9811466
• 负责人: Jerome Moloney
• 金额: $ 35.5万
• 依托单位: University of Arizona
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-04-15 至 2003-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9811466&HistoricalAwards=false
• 关键词: University; Industry; Cooperative; Research; Program

The Arizona Center for Mathematical Sciences (ACMS) and Opto Power Corporation of Tucson have formed a joint University-Industry working partnership, with the specific goal of transitioning cutting-edge basicresearch discoveries on the theory of the interaction of light with semiconductor media, into future generations of high power, high brightness, commercial wide aperture semiconductor laser systems. State-of-the-art, commercial high brightness semiconductor laser sources are currently limited to about 2 Watts continuos wave diffraction limited output, a far cry from the desired 10 Watt diffraction limited level. Above the 2-Watt level, the output is weakly turbulent, displaying strong dynamic filamentation intensity bursts with serious degradation of the far-field output. Lack of progress can be partially ascribed to the absence of a sound physical and mathematical understanding of semiconductor lasers.ACMS researchers have made significant progress in developing such a semiconductor laser theory, which is anchored by the microscopic, many-body physics of the light-semiconductor interaction. The traveling wavesolutions of the coupled system of nonlinear partial differential equations (pdes) describing these complex lasers, produce the same qualitative characteristic spatiotemporal behavior as the weakly turbulentexperimentally observed outputs of broad area semiconductor lasers. The latter have nowhere stable traveling wave solutions.This project will address fundamental physical and mathematical issues related to preventing deterious filamentation instabilities of high power semiconductor lasers. At the physics level, fundamental challenges which we will address include augmenting our existing laser model through the nontrivial step of incorporating thermal phenomena, ranging from plasma and lattice heating through to quasistatic bulk heating effects and, evaluating the contribution of unconfined stated in the barrier regions to the overallsemiconductor optical response. Opto Power Corporation, a highly successful producer of high power semiconductor laser systems will be responsible for experimental validation and the end production of the laser systems. On the experimental side, theoretically computed gain and refractive index spectra for growing these structures and measuring the gain and index spectra will validate specific structures. Once validated, wide aperture lasers will be built and tested against the predictions of full-scale simulation models.We expect to be able to design new generations of high brightness devices which push the existing 2 Watt output to levels approaching the desired 10 Watt level. Preliminary results are extremely promising. Opto Power Corporation is currently filing a patent on our proposed design of a high brightness source which promises to push the 2 Watt limit up by a factor of 2.5-e.0 (5-6 Watts). This GOALI project is jointly supported by the MPS Office of Multidisciplinary Activities (OMA) and the Division of Mathematical Sciences (DMS).

亚利桑那州数学科学中心（ACM）和图森的Opto Power Corporation已建立了联合的大学行业工作伙伴关系，其具体目标是将光线与半导体媒体相互作用的尖端基本研究发现转变为高力量，高功率，高亮度，高亮度，宽阔的范围宽阔的范围。 最先进的商业高亮度半导体激光源目前仅限于2瓦连续波衍射有限的输出，与所需的10瓦衍射有限水平相去甚远。高于2瓦的水平，输出较弱，表现出强大的动态丝强度突发，并严重降解了远场输出。 缺乏进步可以部分地归因于缺乏对半导体激光器的身体和数学理解。ACMS研究人员在开发这种半导体激光理论方面取得了重大进展，该理论是由光 - 高导体相互作用的显微镜​​，多体性物理锚定的。描述这些复杂激光器的非线性偏微分方程（PDE）的耦合系统的行进波溶液产生与较弱的湍流良好观察到的宽面积半导体激光器的输出相同的定性特征时空行为。后者无处稳定的行驶波解决方案。该项目将解决与防止高功率半导体激光器的恶化细丝不稳定性有关的基本物理和数学问题。在物理水平上，我们将要解决的基本挑战包括通过合并热现象的非平凡步骤来增强我们的现有激光模型，从血浆和晶格供暖到质量的体积加热效果，并评估在障碍区域中所指出的无限制区域的贡献，再到全面的良好区域的贡献。 Opto Power Corporation是高功率半导体激光系统的非常成功的生产商，将负责实验验证和激光系统的最终产生。 在实验侧，理论上计算的增益和折射率光谱用于生长这些结构并测量增益和指数光谱将验证特定的结构。一旦经过验证，将根据全尺度仿真模型的预测来构建和测试宽的光圈激光器。我们希望能够设计新一代的高亮度设备，这些设备将现有的2瓦输出推到接近所需的10瓦级别的水平。初步结果非常有前途。 Opto Power Corporation目前正在对我们提出的高亮度源的设计申请专利，该设计有望将2瓦限制提高2.5-E.0（5-6瓦）。 该目标项目由国会议员多学科活动办公室（OMA）和数学科学部（DMS）共同支持。