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

目的：本产学合作计画将探讨一种全新的半导体雷射调变制程。一种新颖的场致电荷分离激光器（FICSL）结构将提供增益的直接调制，以实现相对于采用电流调制的常规二极管激光器高得多的调制速度。 初步建模表明调制速度在100 GHz范围内。 与Ziva Corp.合作，我们的GOALI合作伙伴，将帮助指导这些活动。智力优点：FICSL涉及新的物理，即通过放置在有源增益区上方的栅极结构用外加场分离空穴和电子，以直接调制增益。 因此，应加强对多终端配置中激光动力学的理解。 该团队在MBE生长（Palmstrøm）、高速晶体管（Rodwell）和高效高速垂直腔激光器（Coldwell）方面拥有高水平的专业知识，以独特的方式解决这一新问题。 UCSB实验室在MBE生长，III-V纳米纤维，材料和器件表征方面，在VCSEL类激光研究方面首屈一指。 在Ziva中存在补充技能。 更广泛的影响：这种更高效、更高速的设备可能会彻底改变光学互连方法，并实现更高效的计算机和数据中心。与Ziva的互动极大地受益于参与的学生。 在NSF-NNIN设施内开发的新工艺将提供给未来几代学生。物理学将被纳入ECE 227系列，并将在期刊和会议出版物中传播。合作PI和研究生将继续参加由NSF-MRL，NNIN，COE赞助的代表性不足的少数民族，高中和本科生的十个实习计划中的一个或多个。

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.