Excitons and Nonlinear Optical Effects in Wide Gap II-VI    Semiconductor Superlattices
{'Code': '07010000', 'Directorate': {'Abbreviation': 'ENG', 'LongName': 'Directorate For Engineering'}, 'Division': {'Abbreviation': 'ECCS', 'LongName': 'Div Of Electrical, Commun & Cyber Sys'}}
{'SignBlockName': 'Lawrence Goldberg', 'PO_EMAI': None, 'PO_PHON': None}
The proposed research is an investigation into the nonlinear optical            properties of selected semiconductor superlattices.  The work will              specifically focus on optically induced changes near the excitonic              resonances in II-VI compound semiconductors such as (Zn, Mn)Se and (Cd,         Mn)Te.  These materials are unique in that strongly coupled electronic          and magnetic excitations are optically accessible.  The proposed                studies combine two aspects of new and advanced research, first, the            use of sophisticated transient optical techniques on picosecond and             femtosecond timescale, and second, the spectroscopy of novel ultrathin          semiconductor layered superlattice structures.  The basic portion of            the work involves the characterization of the largely unknown exciton           kinetics on such timescale while the more applied part focuses on the           enhancement of the sought transient nonlinearities in a high density            magnetically oriented exciton system.  The longer term impact of this           research includes possibilities for ultrafast optical switches and              logic elements.
{'FirstName': 'Arto', 'LastName': 'Nurmikko', 'PI_MID_INIT': 'V', 'PI_SUFX_NAME': None, 'PI_FULL_NAME': 'Arto V Nurmikko', 'EmailAddress': 'arto_nurmikko@brown.edu', 'NSF_ID': '000450126', 'StartDate': '09/15/1986', 'EndDate': None, 'RoleCode': 'Principal Investigator'}
{'Name': 'Brown University', 'CityName': 'PROVIDENCE', 'ZipCode': '029129100', 'PhoneNumber': '4018632777', 'StreetAddress': '1 PROSPECT ST', 'StreetAddress2': None, 'CountryName': 'United States', 'StateName': 'Rhode Island', 'StateCode': 'RI', 'CONGRESSDISTRICT': '01', 'CONGRESS_DISTRICT_ORG': 'RI01', 'ORG_UEI_NUM': 'E3FDXZ6TBHW3', 'ORG_LGL_BUS_NAME': 'BROWN UNIVERSITY', 'ORG_PRNT_UEI_NUM': None}
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{'Code': '1517', 'Text': 'EPMD-ElectrnPhoton&MagnDevices'}
{'url': 'https://www.nsf.gov/awardsearch/download?DownloadFileName=1986&All=true', 'xml': '8611106.xml'}