Photodigm Inc. has released a semiconductor diode laser that delivers high power, low astigmatism, single-frequency operation and diffraction-limited beam quality. The technology is based on a proprietary distributed Bragg reflector ridge waveguide process. The quantum well epitaxial design enables power in excess of 500 mW, with wall-plug efficiency up to 50%, while maintaining single-frequency operation. The device provides the optical performance of a diode-pumped solid-state laser and is more efficient. It can be produced at wavelengths throughout the semiconductor material spectral range and is available in specific wavelengths ranging from 920 to 1100 nm. Potential applications include defense, digital imaging and free-space communications.