ROCKY MOUNTAIN SECTION OPTICAL SOCIETY OF AMERICA
                              &
           IEEE LASERS AND ELECTROOPTICS SOCIETY


                  May Meeting & Pizza Party

Date:  Thursday, 17 May 2001
Time:  7:00 PM pizza, 7:30 PM talk
Place: Colorado State University
       Fort Collins, CO
       Engineering Room 120
       (the Physics Auditorium - aka Hammond Auditorium)


Title: Heterogeneous Integration of VCSELs & their 
Applications

       Prof. Carl Wilmsen
       Dept of Electrical and Computer Engineering
       Colorado State University
       Fort Collins, CO


Abstract:

VCSELs are now a mature technology with millions used in 
applications every year. More recently, VCSELs have been 
bonded to silicon CMOS chips and a number of other substrates 
in order to increase the compactness and performance of 
integrated systems, to reduce the required passive optics and 
to place the VCSELs in strategic locations within the 
optoelectronic system. This talk will review the methods of 
bonding VCSELs and some common applications of the bonded 
VCSELs. Tunable and fluidic cavity VCSELs will also be 
discussed.


Biography:
Carl Wilmsen is a Professor of Electrical and Computer 
Engineering at Colorado State University where he has served 
as Department Head and Associate Director of the NSF ERC in 
Optoelectronic Computer Systems. His teaching and research 
have been recognized with the Halliburton Award for 
Excellence and the Abell Research Award. He has spent 
sabbatical leave at Cambridge University, the IBM Watson 
Research Center and at the Naval Ocean System Laboratory. His 
present research focuses on unique VCSEL structures and their 
integration with CMOS integrated circuit chips. His group was 
the first to heterogeneously bond an array of VCSELs to 
foundry fabricated integrated circuits. The research explored 
various methods of bonding as well as measurement and 
modeling of their characteristics. His group has also 
successfully fabricated and tested four different free space 
optoelectronic processing systems using VCSEL arrays. He has 
recently co-edited a book on VCSEL design, fabrication, 
growth and characteristics. Previous research includes 
optoelectronic logic gates, semiconductor surface and 
interface studies, oxide growth on III-V compounds and 
superconducting tunnel junctions.