Award Data

In this research, we will investigate and develop a new class of mid-infrared (3-5 pm) diode lasers vVhich was first proposed by the PI. These lasers utilize interband transitions for photon emission in a staircase of Sb-based type-ll quantum wells. In this way, we retain the advantages of cascaded tunneling injection and wavelength tunability, while circumventing the fast phonon scattering loss e ...

The achievement in realizing low-loss waveguides on any surface of interests using photolime gel polymer motivates us to further investigate the feasibility of employing such a unique material as a multi-functional polymer that can provide modulation, switching, wavelength conversion and amplification simultaneously on any optoelectronic substrate of interest. In this program, we propose to resear ...

To further enhance the bandwidth promised by optics, wavelength division multiplexing (WDM) scheme is becoming one of the major thrusts in photonics research. Most of the WDMs demonstrated are made out of glass and III-V compound semiconductor. The non-multiplexibility and the small index modulation of these inorganic materials result in severe restrictions that make WDM systems incapable of handl ...

Controlled doping of silicon carbide (SiC) during epitaxial growth remains a significant problem due to the amphoteric nature of many dopants and competition for active sites between the dopants, silicon and carbon atoms. Currently, the most promising avenue for controlled doping of SiC is a process called site competition epitaxy which is a technique based on adjusting the SitC ratio within the g ...