Wavelength tuning of VCSELs via controlled strain

Besides major advantages for telecommunication applications, vertical-cavity surface-emitting lasers (VCSELs) have attracted interest for their potential for neuro-inspired computing, frequency comb generation, or high-frequency spin oscillations. In the meantime, strain applied to the laser structu...

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Veröffentlicht in:Optics letters 2024-08, Vol.49 (15), p.4477
Hauptverfasser: Guessoum, Salah, Kyriazis, Athanasios, Malica, Tushar, Van Erps, Júrgen, Van Steenberge, Geert, Virte, Martin
Format: Artikel
Sprache:eng
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Zusammenfassung:Besides major advantages for telecommunication applications, vertical-cavity surface-emitting lasers (VCSELs) have attracted interest for their potential for neuro-inspired computing, frequency comb generation, or high-frequency spin oscillations. In the meantime, strain applied to the laser structure has been shown to have a significant impact on the laser emission properties such as the polarization dynamics or birefringence. In this work, we further explore the influence of strain on VCSELs and how this effect could be used to fine-tune the laser wavelength. Through a comprehensive investigation, we demonstrate a consistent wavelength shift up to 1 nm and report a sensitivity between 0.12 and 0.18 nm/millistrain. We also record birefringence values up to 292 GHz. Our results show that a controlled strain level could be considered for fine wavelength tuning and possibly alleviate the selection of VCSEL for precise wavelength requirements.
ISSN:0146-9592
1539-4794
1539-4794
DOI:10.1364/OL.532942