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Title

In situ measurements of the cavity length variation across the transverse section of broad area vertical-cavity surface-emitting lasers (VCSELs)

AuthorsBarland, Stéphane; Marino, Francesco; Giudici, Massimo; Tredicce, Jorge R.; Balle, Salvador CSIC ORCID
KeywordsSurface emitting lasers
Laser cavity resonators
[PACS] Laser resonators, cavities, amplifiers, arrays, and rings
[PACS] Semiconductor lasers; laser diodes
Issue Date22-Sep-2003
PublisherAmerican Institute of Physics
CitationApplied Physics Letters 83(12): 2303-2305 (2003)
AbstractWe present a method to measure the cavity length variations of a broad-area vertical-cavity surface-emitting laser. The method is based on the observation of an inhomogeneous nonlinear response of the system under coherent optical injection. Due to the presence of a cavity resonance frequency gradient in the system, the boundary of a modulational instability manifests itself as a separation of the device in two distinct spatial regions. The observation of the position of this boundary depending on parameters reveals the degree of homogeneity of the sample and allows a direct measurement of the spatial variations of the cavity resonance frequency.
Description3 pages, 3 figures.-- PACS nrs.: 42.60.Da, 42.55.Px.
Publisher version (URL)http://dx.doi.org/10.1063/1.1608463
URIhttp://hdl.handle.net/10261/15348
DOI10.1063/1.1608463
ISSN0003-6951
Appears in Collections:(IMEDEA) Artículos

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