Wavelength Converter with Polarization-Reversed Structure for Laser Display

Abstract

Wavelength converters are reviewed for a compact high-power green laser. Quasi-Phase-Matched (QPM) second-harmonic-generation realized high efficiency even in a single-pass conversion with a continuous wave laser. Materials and device configurations are introduced for different power levels from sub watt to multi watt. Future directions for an efficient wavelength-conversion laser will be discussed.