In situ measurement of cavity length variation across the transverse section of broad-area vertical-cavity surface-emitting lasers

Year: 2003

Authors: Barland S., Marino F., Giudici M., Tredicce J., Balle S.

Autors Affiliation: Univ Illes Balears, CSIC, Inst Mediterrani Estudis Avancats, E-07190 Esporles, Spain; Inst Nonlineare Nice, F-06560 Valbonne, France.

Abstract: We 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. (C) 2003 American Institute of Physics.

Journal/Review: APPLIED PHYSICS LETTERS

Volume: 83 (12)      Pages from: 2303  to: 2305

KeyWords: Pattern-formation
DOI: 10.1063/1.1608463

Citations: 8
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