Disorder mapping in VCSELs using frequency-selective feedback

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Ackemann, Thorsten and Radwell, Neal Matthew and Noblet, Yoann and Jaeger, R. (2012) Disorder mapping in VCSELs using frequency-selective feedback. Optics Letters, 37 (6). pp. 1079-1081. ISSN 0146-9592 (https://doi.org/10.1364/OL.37.001079)

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Abstract

We report on a simple method with a high spectral and spatial resolution for mapping variations in the cavity resonance of a plano-planar broad-area laser based on frequency-selective feedback. The demonstration experiment uses a vertical-cavity surface-emitting-laser (VCSEL), in which growth induced inhomogeneities are of particular importance. It relies only on a standalone laser with a narrow-bandwidth passive filter avoiding the need for an expensive tunable laser or high-resolution spectrometer.

ORCID iDs

Ackemann, Thorsten ORCID logoORCID: https://orcid.org/0000-0003-2727-7395, Radwell, Neal Matthew, Noblet, Yoann and Jaeger, R.;
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