Author : Christoph Matthias Schultz
Publisher : Cuvillier Verlag
ISBN 13 : 3736945213
Total Pages : 388 pages
Book Rating : 4.7/5 (369 download)
Book Synopsis Analysis and mitigation of the factors limiting the efficiency of high power distributed feedback diode lasers by : Christoph Matthias Schultz
Download or read book Analysis and mitigation of the factors limiting the efficiency of high power distributed feedback diode lasers written by Christoph Matthias Schultz and published by Cuvillier Verlag. This book was released on 2013-10-08 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt: High-power, high-efficiency, wavelength-stabilized broad area (BA) diode lasers are promising devices for industrial applications. They can be used, for example, for pumping narrow absorption bands in gain media of solid-state and fiber lasers as well as for power scaling by means of dense spectral beam combining. This thesis focuses on the analysis and mitigation of the factors limiting the efficiency of high-power distributed feedback (DFB) diode lasers. In particular, it will be shown how a power conversion efficiency in the 60 %-range can be achieved from 10 W-class 100 μm stripe DFB-BA lasers – values close to those of state-of-the-art Fabry-Pérot (FP) BA lasers. For the first time world-wide, newly developed DFB-BA lasers achieve 12 W continuous mode optical output power with 62 % peak power conversion efficiency and 58 % at 10 W, respectively. Wavelength stabilization is demonstrated from threshold to 15 A with a spectral width below 0.8 nm containing 95 % of the emitted power. The factors limiting the efficiency of DFB-BA lasers compared to state-of-the-art 10 W-class FP-BA lasers have been identified and as a result largely eliminated.