Ultrafast carrier dynamics and resonant inter-miniband nonlinearity of a cubic GaN/AlN superlattice

We investigate the linear and dynamical nonlinear optical properties of a superlattice composed of ultra-narrow n-doped GaN/AlN quantum wells. Owing to huge band offsets, the structures feature a broad inter-miniband transition in the telecom window at 1.55 μm. Resonant pump-probe experiments direct...

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Published in:Applied physics letters 2015-11, Vol.107 (21)
Main Authors: Jostmeier, Thorben, Wecker, Tobias, Reuter, Dirk, As, Donat J., Betz, Markus
Format: Article
Language:English
Subjects:
Aluminum nitride
Applied physics
Gallium nitrides
Heterostructures
Nonlinearity
Offsets
Optical properties
Quantum wells
Superlattices
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description We investigate the linear and dynamical nonlinear optical properties of a superlattice composed of ultra-narrow n-doped GaN/AlN quantum wells. Owing to huge band offsets, the structures feature a broad inter-miniband transition in the telecom window at 1.55 μm. Resonant pump-probe experiments directly reveal ultrafast intersubband relaxation occurring within
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subjects Aluminum nitride
Applied physics
Gallium nitrides
Heterostructures
Nonlinearity
Offsets
Optical properties
Quantum wells
Superlattices
title Ultrafast carrier dynamics and resonant inter-miniband nonlinearity of a cubic GaN/AlN superlattice
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