Title :
High duty-cycle (≥ 50%) operation of GaInAs/Al(Ga)AsSb quantum cascade lasers
Author :
Bronner, W. ; Yang, Q. ; Manz, C. ; Kaufel, G. ; Mann, Ch. ; Köhler, K. ; Wagner, J.
Author_Institution :
Fraunhofer-Inst. fur Angewandte Festkorperphys., Freiburg, Germany
Abstract :
This paper presents the operation and fabrication of GaInAs/Al(Ga)AsSb quantum cascade lasers. This article also focuses on the development of processing technology to enhance the heat removal from the active region of the lasers by depositing a thick gold layer on both sides of the laser ridge. Due to the improved heat removal devices emitting at around 4.9 μm, the quantum cascade laser can be operated at high duty cycle (≥ 50%) up to a heat-sink temperature of 130 K.
Keywords :
III-V semiconductors; aluminium compounds; gallium arsenide; gallium compounds; heat sinks; indium compounds; quantum cascade lasers; 130 K; 4.9 mum; GaInAs-AlGaAsSb; GaInAs/Al(Ga)AsSb lasers; heat removal; heat-sink; high duty-cycle lasers; laser active region; laser ridge; processing technology; quantum cascade lasers; thick gold layer; Gold; Laser modes; Molecular beam epitaxial growth; Optical pulses; Power generation; Power lasers; Pulsed laser deposition; Quantum cascade lasers; Space vector pulse width modulation; Temperature dependence;
Conference_Titel :
Lasers and Electro-Optics Society, 2005. LEOS 2005. The 18th Annual Meeting of the IEEE
Print_ISBN :
0-7803-9217-5
DOI :
10.1109/LEOS.2005.1548214
