Sub-Picosecond Studies of Opto-Electronic Devices
{'Code': '07010000', 'Directorate': {'LongName': 'Directorate For Engineering'}, 'Division': {'LongName': 'Div Of Electrical, Commun & Cyber Sys'}}
{'SignBlockName': 'Athena C. Harvey'}
The general purpose of these studies is to obtain a better understanding        of parameters governing ultra-short pulse generation, propagation, and          nonlinear interaction in semiconductor thin films and active waveguides.        Results of such studies are expected to facilitate the design of future         high-rate optical communication and signal processing devices.  Topics          of particular current interests are:  ultrafast gain and loss dynamics          in diode lasers, limitations on pulse formation and propagation in              semiconductor waveguides, femtosecond carrier dynamics in InGaAs and            InGaAsP, and nonlinear coupling phenomena in active waveguides.  The            proposed work is primarily experimental; and an important aspect is the         development of novel femtosecond diagnostic techniques.  Specific goals         are outlined in three sections.                                                                                                                                 (a)  Wavelength-tunable studies of sub-picosecond gain and absorption                nonlinearities in GaAlAs and InGaAsP diode lasers.                                                                                                         (b)  Dynamic index of refraction changes in active semiconductor                     wave-guide devices.                                                                                                                                        (c)  Improved femtosecond diagnostics for the long-wavelength regime.
{'FirstName': 'Erich', 'LastName': 'Ippen', 'EmailAddress': 'ippen@mit.edu', 'StartDate': '03/01/1989', 'EndDate': None, 'RoleCode': 'Principal Investigator'}
{'Name': 'Massachusetts Institute of Technology', 'CityName': 'Cambridge', 'ZipCode': '021394301', 'PhoneNumber': '6172531000', 'StreetAddress': '77 MASSACHUSETTS AVE', 'CountryName': 'United States', 'StateName': 'Massachusetts', 'StateCode': 'MA'}
{'Code': '1517', 'Text': 'ELECT, PHOTONICS, & MAG DEVICE'}
{'url': 'https://www.nsf.gov/awardsearch/download?DownloadFileName=1988&All=true', 'xml': '8815834.xml'}