Article (Scientific journals)
Spatial coherence measurements in arrays of coupled vertical cavity surface emitting lasers
Lundeberg, Lars; Lousberg, Grégory; Boiko, Dmitri et al.
2007In Applied Physics Letters, 90, p. 021103
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Abstract :
[en] The spatial coherence and the optical phase distribution across a two-dimensional 2D photonic crystal implemented with coupled arrays of vertical cavity surface emitting lasers VCSELs are experimentally characterized. This is achieved by performing Young’s interference experiments between pairs of array elements using a spatial light modulator arrangement. In contrast to far-field measurements that provide information only on the global spatial coherence, this approach can yield full mapping of the complex degree of spatial coherence. Examples of such analysis are presented for nominally uniform one-dimensional and 2D arrays of coupled VCSELs and possible mechanisms of the observed coherence degradation are discussed.
Disciplines :
Electrical & electronics engineering
Physics
Author, co-author :
Lundeberg, Lars;  Ecole Polytechnique Fédérale de Lausanne - EPFL > Dept. de Physique > Laboratory of Physics of Nanostructures
Lousberg, Grégory ;  Université de Liège - ULiège / Ecole Polytechnique Fédérale de Lausanne - EPFL > Dept. de Physique > Laboratory of Physics of Nanostructures
Boiko, Dmitri;  Ecole Polytechnique Fédérale de Lausanne - EPFL > Dept. de Physique > Laboratory of Physics of Nanostructures
Kapon, Eli;  Ecole Polytechnique Fédérale de Lausanne - EPFL > Dept. de Physique > Laboratory of Physics of Nanostructures
Language :
English
Title :
Spatial coherence measurements in arrays of coupled vertical cavity surface emitting lasers
Publication date :
January 2007
Journal title :
Applied Physics Letters
ISSN :
0003-6951
eISSN :
1077-3118
Publisher :
American Institute of Physics, Melville, United States - New York
Volume :
90
Pages :
021103
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 18 September 2009

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