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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.
SEM cross-section of circular GIRO mirror.

Publications

    International Journals

  1. T. Moser, J. Balmer, D. Delbeke, P. Muys, S. Verstuyft, R. Baets, Intracavity generation of radially polarized CO2 laser beams based on a simple binary dielectric diffraction grating, Applied Optics, 45(33), p.8517-8522 (2006).

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