Journal
OPTICS LETTERS
Volume 37, Issue 6, Pages 1079-1081Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.37.001079
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- EPSRC DTG
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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. (C) 2012 Optical Society of America
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