Title :
15-W Fiber-Coupled Quantum-Dot Pump Module
Author :
Gilfert, Christian ; Pavelescu, Emil-Mihai ; Reithmaier, Johann Peter ; Westphalen, Thomas ; Traub, Martin ; Michel, Nicolas ; Krakowski, Michel
Author_Institution :
Inst. of Nanostruct. Technol. & Analytics, Univ. of Kassel, Kassel, Germany
fDate :
6/15/2012 12:00:00 AM
Abstract :
We have developed 920-nm pump modules for Yb-doped fiber amplifiers. The pump laser utilizes a single layer of In(AlGa)As/GaAs quantum-dot material as active region. Stable operation without thermoelectric cooling, output powers of up to 40 W, and wall-plug efficiencies of more than 50% have been achieved on processed broad-area laser bars. The packaged module reaches 15 W when coupled to a 200-μm fiber.
Keywords :
electronics packaging; laser beams; laser stability; optical fibre amplifiers; optical fibre couplers; optical pumping; ytterbium; Yb-doped fiber amplifiers; broad-area laser bars; fiber-coupled quantum-dot pump module; laser output powers; packaged module; power 15 W; quantum-dot material; size 200 mum; stable operation; wall-plug efficiencies; wavelength 920 nm; Fiber lasers; Laser excitation; Materials; Measurement by laser beam; Pump lasers; Quantum dot lasers; Temperature measurement; Optical fiber amplifiers; optical fiber communication; quantum dots; semiconductor lasers;
Journal_Title :
Photonics Technology Letters, IEEE
Conference_Location :
4/19/2012 12:00:00 AM
DOI :
10.1109/LPT.2012.2194277
