GOALI: A Novel Field-Induced Charge-Separation Laser (FICSL) for Ultra High-Speed High-Efficiency Modulation

目的：本产学研合作项目将探索一种全新的半导体激光调制工艺。一种新型的场感应电荷分离激光器（FICSL）结构将提供增益的直接调制，从而实现比采用电流调制的传统二极管激光器更高的调制速度。初步建模表明调制速度在100ghz范围内。与我们的GOALI合作伙伴Ziva公司的合作将有助于指导这些活动。智力优势：FICSL涉及新的物理学，即通过放置在有源增益区域上方的门结构将空穴和电子与应用场分开，以便直接调制增益。结果是对多终端配置的激光动力学有了更深入的了解。该团队在MBE增长（palmstro øm），高速晶体管（Rodwell）和高效，高速垂直腔激光器（Coldren）方面拥有高水平的专业知识，以独特的方式解决这一新的问题领域。UCSB实验室在MBE生长、III-V纳米制造、材料和器件特性方面的研究在vcsel类激光研究中首屈一指。Ziva拥有互补的技能。更广泛的影响：这种更高效、更快的设备可能会彻底改变光互连方法，并使计算机和数据中心更高效。与Ziva的互动使参与的学生受益匪浅。在NSF-NNIN设施内开发的新工艺将提供给后代的学生。物理学将纳入ECE227丛书，并将在期刊和会议出版物中分发。共同pi和研究生将继续参加由NSF-MRL、NNIN和COE赞助的针对少数族裔、高中生和本科生的十个实习项目中的一个或多个。

Objective:An entirely new type of semiconductor laser modulation process will be explored in this industry-university collaborative project. A novel Field-Induced Charge Separation Laser (FICSL) structure will provide direct modulation of the gain to enable much higher modulation speeds relative to conventional diode lasers in which current modulation is employed. Preliminary modeling suggests modulation speeds in the 100 GHz range. Collaborations with Ziva Corp., our GOALI partner, will help guide these activities.Intellectual Merit: The FICSL involves new physics, that of separating holes and electrons with an applied field via a gate structure placed above the active gain region in order to directly modulate the gain. An enhanced understanding of laser dynamics in multi-terminal configurations should result. The team brings high levels of expertise in MBE growth (Palmstrøm), high-speed transistors (Rodwell) and efficient, high-speed vertical-cavity lasers (Coldren) to uniquely address this new problem area. The UCSB labs in MBE growth, III-V nanofabrication, and materials and device characterization, are second to none for the VCSEL-like laser studies to be doneS. Complementary skills exist at Ziva. Broader impact:Such more-efficient, higher-speed devices may revolutionize optical interconnect approaches and enable more efficient computers and data centers. Interaction with Ziva greatly benefits the students involved. New processes developed within NSF-NNIN facility, will be available to future generations of students. Physics will be integrated into the ECE227 series, and it will be disseminated in journal and conference publications. The co-PIs and graduate students will continue to participate in one or more of the ten internship programs for under-represented minorities, high school, and undergrad students that are sponsored by NSF-MRL, NNIN, & COE.