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Proceedings Paper

Monolithic coupling of QCLs in evenescent waveguides on InP
Author(s): C. Gilles; G. Maisons; B. Simozrag; M. Carras
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Paper Abstract

In this work we present a significant step toward monolithic multiplexed distributed feedback (DFB) quantum cascade lasers (QCL) array on indium phosphide (InP). A multi-wavelength DFB-QCL array evanescently coupled to an underlying InGaAs waveguide on iron doped InP wafer is presented. We introduce the design, optimization, simulation and fabrication of the adiabatic coupler ensuring high transfer efficiency from the active to the passive waveguide. The active region designed in 7 μm - 10 μm wavelength range is grown by molecular beam epitaxy on top of an InGaAs waveguide. Components are defined during postgrowth processing, which eliminates the need for material regrowth or bonding techniques. With the present design, one could realize a broadly tunable, mechanically robust, single-mode output source which can be used in spectroscopic applications.

Paper Details

Date Published: 8 February 2015
PDF: 6 pages
Proc. SPIE 9370, Quantum Sensing and Nanophotonic Devices XII, 93702W (8 February 2015); doi: 10.1117/12.2176531
Show Author Affiliations
C. Gilles, Alcatel Thales III-V Lab. (France)
G. Maisons, Alcatel Thales III-V Lab. (France)
B. Simozrag, Alcatel Thales III-V Lab. (France)
M. Carras, Alcatel Thales III-V Lab. (France)

Published in SPIE Proceedings Vol. 9370:
Quantum Sensing and Nanophotonic Devices XII
Manijeh Razeghi; Eric Tournié; Gail J. Brown, Editor(s)

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