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Dr. Seth Fortuna

Electrical Engineering
Advisor: Prof. Wu

BIOGRAPHY
Seth A. Fortuna received the B.Sc. from Pennsylvania State University in 2003, M.Sc. from University of Illinois at Urbana-Champaign in 2009 and Ph.D. from UC Berkeley in 2017; all in electrical engineering. His dissertation research on antenna-coupled light emitting devices was recognized with the 2016 Tucker Award which honors superior work and scholarship in the technology of materials used in semiconductor devices. He has previously worked in industry at Intel Corporation and Philips Lumileds working primarily on reliability and failure analysis of semiconductor devices. He is currently a postdoctoral scholar at UC Berkeley developing novel devices for energy efficient computing and communication. His current research interests include nano-photonics for use in on-chip optical communication links.

Directly Modulated High-Speed nanoLED Utilizing Optical Antenna Enhanced Light Emission [BPN703]
Traditional semiconductor light emitting diodes (LEDs) have low modulation speed because of
long spontaneous emission lifetime. Spontaneous emission in semiconductors (and indeed most
light emitters) is an inherently slow process owing to the size mismatch between the dipole
length of the optical dipole oscillators responsible for light emission and the wavelength of
the emitted light. More simply stated: semiconductors behave as a poor antenna for its own
light emission.

By coupling a semiconductor at the nanoscale to an external antenna, the spontaneous emission
rate can be dramatically increased alluding to the exciting possibility of an LED that can be
directly modulated faster than the laser. In this project, we plan to demonstrate an antenna-
enhanced nanoscale semiconductor light emitting diode (nanoLED) with direct modulation rate >50
GHz, exceeding the bandwidth of the semiconductor laser. Such an nanoLED is well-suited as a
light source for on-chip optical communication where small size, fast speed, and high
efficiency are needed to achieve the promised benefit of reduced power consumption of on-chip
optical interconnect links compared with less efficient electrical interconnect links.


Current Active Projects:
BPN458
BPN703
BPN869
 

     Last Updated: Sun 2017-Nov-05 14:29:55

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