Research Equipment Grant-Development of Testbed for Ultra- Fast Opto-Electronic Devices

9413393，PI-Garmire：该提案旨在开发一个测试平台，以推进光纤和无线通信的10-90 GHz光电器件的最新技术水平，作为新兴国家信息高速公路的一部分。 测试将使功能，锁模半导体激光器的高速开关能力的研究。 单片锁模器件，频率范围为10-90 GHz，通过数字切换锁模频率实现功能。 为了最小化开关时间和优化效率，有必要了解非线性增益和腔谐振结构之间的相互作用。 在多功能射频调制激光器上需要进行超快光泵浦探测实验，其时间分辨率要比调制速率快得多。 1.3 μ m和1.5 μ m波长范围是局域网和长距离通信所需要的。 这个测试平台需要开发，因为目前还没有一个系统可以将光通信所需波长的超短脉冲产生与研究调制半导体激光器所需的电定时相结合。 一个开发，拟议的测试平台将提供在加州大学伯克利分校和南加州大学的研究人员之间的合作的基础。 这些研究人员联合收割机结合了光学泵浦探测研究的专业知识和先进半导体激光器和腔动力学的专业知识。 可调谐固态激光器方面的专家也将参与开发。 单锁模Nd：YAG激光器将用于泵浦1.3 μ m附近的Cr 4+：镁橄榄石激光器和1.5 μ m附近的Cr 4+：YAG激光器。 还将寻求新的晶体和新的方法来激活更大的波长调谐和更容易的操作。 将设计和建造光学器件和电子器件之间的定时同步机制;目的是实现最实用和可靠的系统，用于光电器件研究。 如果有足够的资金，同步泵浦锁模光参量振荡器也将建成，并将其性能与可调谐锁模激光器进行比较。 其结果将是一个独特的测试平台，主要位于南加州大学激光研究中心，并在加州大学伯克利分校提供补充设施，用于研究光电器件。 该测试平台将提供给来自其他大学，工业和政府实验室的研究人员。 利用该试验台进行的研究将产生新的功能性光电激光器设计，沿着定义和演示多GHz通信系统中的性能指标。 该测试平台将提供给来自其他大学，工业和政府实验室的研究人员。 利用该试验台进行的研究将产生新的功能光电激光器设计，沿着定义和演示多GHz通信系统中的性能指标。 该试验台还将进一步推进功能半导体激光器中作为时间和位置函数的载流子动态的基础科学。 匹配的支持将来自几个公司，激光研究中心工业附属计划，并从南加州大学的研究礼物计划。

9413393, PI-Garmire: This proposal is to develop a testbed to advance the state of the art in 10-90 GHz optoelecetronic devices for fiber and wireless communications as part of the emerging national information highway. The tested will enable study of the high speed switching capabilities of functional, mode-locked semiconductor laser. Monolithic mode-locked devices, in the range form 10-90 GHz, and achieve functionality by digitally switching mode-locked frequencies. To minimize switching time and optimize efficiency, it is necessary to understand the interplay between nonlinear gain and the cavity resonance structure. Ultra-fast optical pump-probe experiments are needed on multi-functional RF-modulated lasers, with time resolution much faster than the modulation rate. The 1.3 um and 1.5 wavelength regions are needed because of their application to local area network and long-haul communications. Development is needed for this testbed because there is no system in existence that combines ultra-short pulse generation at wavelengths of interest for optical communications with the electrical timing required to study modulated semiconductor lasers. One developed, the proposed testbed will provide the basis for collaboration between investigators at University of California, Berkeley and University of Southern California. These researchers combine expertise in optical pump-probe studies and expertise in advanced semiconductor lasers and cavity dynamics. Also involved in the development will be experts in tunable solid state lasers. A single mode-locked Nd:YAG laser will be used to pump both a Cr4+:Forsterite laser near 1.3 um and a Cr4+:YAG laser near 1.5 um. New crystals and new approaches will also be sought to active greater wavelength tuning and greater ease of operation. Mechanisms for timing synchronism between the optics and electronics will be designed and built; the aim is to achieve the most practical and reliable systems to use in opto-electronic device studies. If sufficient funds can be found, a synchronously pumped mode-locked optical parametric oscillator will also be built and its performance compared to tunable mode-locked lasers. The outcome will be a unique testbed, located primarily at the Center for laser Studies at USC, with complementary facilities at UC Berkeley, designed for study of opto-electronic devices. This testbed will be made available to researchers form other universities, industry, and government laboratories. Research using the testbed should result in new functional opto-electronic laser designs, along with definition and demonstration of performance measures in multi-GHz communication systems. This testbed will be made available to researchers from other universities , industry, and government laboratories. Research using the testbed should result in new functional opto-electronic laser designs, along with definition and demonstration of performance measures in multi-GHz communication systems. This testbed will also further the basic science of carrier dynamic as a function of time and position within functional semiconductor lasers. Matching support will come form several compainies, the Center for Laser Studies Industrial Affiliates Program, and from USC's gift program for research.