High Power 589-NM Sources Based on VECSELS

    Semiconductor lasers have, in the last few years, gone from the relatively low-power examples found in DVD players to high-power equipment that is now replacing more conventional lasers in many applications. Professor Mahmoud Fallahi has built on the highly successful VCSEL technology to develop vertical external cavity surface emitting lasers to create a new generation of compact, high-power light sources.
    When coupled with nonlinear optical crystals, VESCEL-based semiconductor lasers like those shown at right can generate desirable wavelengths, such as the 589-nm wavelength useful for dermatology. These lasers have myriad uses, from medicine to manufacturing to metrology.
    Yellow light source enabled by VECSELs
    Yellow light source enabled by high power VECSELs.