Self-mixing sensing system based on uncooled vertical-cavity surface-emitting laser array: Linking multichannel operation and enhanced performance

John R. Tucker, Alireza Mowla, Jeremy Herbert, Miguel A. Fuentes, Craig S. Freakley, Karl Bertling, Yah Leng Lim, Ranveer S. Matharu, Julien Perchoux, Thomas Taimre, Stephen J. Wilson, Aleksandar D. Rakić

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

We compare the performance of a self-mixing (SM) sensing system based on an uncooled monolithic array of 24 × 1 vertical-cavity surface-emitting lasers (VCSELs) in two modes of operation: single active channel and the concurrent multichannel operation.We find that the signal-to-noise ratio of individual SM sensors in a VCSEL array is markedly improved by multichannel operation, as a consequence of the increased operational temperature of the sensors. The performance improvement can be further increased by manufacturing VCSEL arrays with smaller pitch. This has the potential to produce an imaging system with high spatial and temporal resolutions that can be operated without temperature stabilization.

Original languageEnglish
Pages (from-to)394-397
Number of pages4
JournalOptics Letters
Volume39
Issue number2
DOIs
Publication statusPublished - 15 Jan 2014
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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    Tucker, J. R., Mowla, A., Herbert, J., Fuentes, M. A., Freakley, C. S., Bertling, K., ... Rakić, A. D. (2014). Self-mixing sensing system based on uncooled vertical-cavity surface-emitting laser array: Linking multichannel operation and enhanced performance. Optics Letters, 39(2), 394-397. https://doi.org/10.1364/OL.39.000394