GIRO diffractive optics for CO2 lasers
Research Area: III-V Semiconductor Photonic ICs
Main Researcher: Dirk Taillaert
Diffractive optics can provide enhanced functionality compared to traditional optics. We are researching the use of a GIRO grating mirror as a polarizing mirror in high-power CO2 lasers. The GIRO grating can theoretically have 100% reflection for one polarization. The grating is made in a GaAs substrate by conventional microphotonic fabrication steps such as optical lithography and reactive ion etching.
SEM cross-section of circular GIRO mirror.