Title :
Coherent lasers turn up the power
Author_Institution :
Spectra Diode Lab., San Jose, CA, USA
Abstract :
Three categories of multiwatt, coherent laser designs are discussed. The designs are single-mode waveguides suitable for output powers in the order of 200 mW, single-mode operation of multimode lasers, which are suitable for operation between 0.5 and 1.0 W, and the monolithically integrated master-oscillator power amplifier (M-MOPA) designs that have demonstrated 4.5 W of spectrally coherent output power and more than 0.8 W of single-lobe diffraction-limited output power in a technology that is scalable to even higher output powers. Laser-diode design architectures and the unique properties of semiconductor materials are reviewed.<>
Keywords :
diffraction gratings; integrated optics; laser modes; optical waveguides; semiconductor lasers; 0.2 to 4.5 W; 200 mW; coherent laser designs; master-oscillator power amplifier; monolithically integrated; multimode lasers; multiwatt semiconductor lasers; semiconductor materials; single-mode waveguides; Diffraction; High power amplifiers; Operational amplifiers; Optical design; Power amplifiers; Power generation; Power lasers; Semiconductor lasers; Semiconductor materials; Waveguide lasers;
Journal_Title :
Circuits and Devices Magazine, IEEE
