Operation of five individual diode lasers as a coherent ensemble by fiber coupling into an external cavity

Five diode lasers that each have one facet antireflection coated were fiber coupled into an external cavity and operated as a coherent ensemble by the use of a spatial filter placed at the Fourier plane of the cavity. The resulting output was shown to be in a single spectral line with a linewidth le...

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Bibliographic Details
Published in:Applied physics letters 1991-08, Vol.59 (7), p.759-761
Main Authors: CORCORAN, C. J, REDIKER, R. H
Format: Article
Language:English
Subjects:
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Lasers
Optics
Physics
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Summary:Five diode lasers that each have one facet antireflection coated were fiber coupled into an external cavity and operated as a coherent ensemble by the use of a spatial filter placed at the Fourier plane of the cavity. The resulting output was shown to be in a single spectral line with a linewidth less than the instrumental resolution (7.5 MHz) of the Fabry–Perot spectrum analyzer used. The effect of rotating the polarization of the radiation inside one of the fibers is described.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.105334