Towards a photonic band edge laser using hexagonal-SiGe nanowire arrays (Conference Presentation)

David Busse; Elham Fadaly; Victor T. van Lange; Jens Réne Suckert; Alain Dijkstra; Marvin van Tilburg; Claudia Rödl; Philipp Staudinger; Marcel A. Verheijen; Sebastian Kölling; Dorian Ziss; Jürgen Furthmüller; Friedhelm Bechstedt; Julian Stangl; Heinz Schmid; Silvana Botti; Erik P. A. M. Bakkers; Jos E. M. Haverkort; Jonathan J. Finley

doi:10.1117/12.2544968

9 March 2020 Towards a photonic band edge laser using hexagonal-SiGe nanowire arrays (Conference Presentation)

David Busse, Elham Fadaly, Victor T. van Lange, Jens Réne Suckert, Alain Dijkstra, Marvin van Tilburg, Claudia Rödl, Philipp Staudinger, Marcel A. Verheijen, Sebastian Kölling, Dorian Ziss, Jürgen Furthmüller, Friedhelm Bechstedt, Julian Stangl, Heinz Schmid, Silvana Botti, Erik P. A. M. Bakkers, Jos E. M. Haverkort, Jonathan J. Finley

Author Affiliations +

Proceedings Volume 11301, Novel In-Plane Semiconductor Lasers XIX; 113010K (2020) https://doi.org/10.1117/12.2544968
Event: SPIE OPTO, 2020, San Francisco, California, United States

Abstract

Hexagonal SiGe has been theoretically shown to feature a tunable direct bandgap in the range 0.4-0.8eV. We study arrays of site-selectively grown Si_(1-x)-Ge_x nanowires (NWs) grown using the crystal transfer method in which wurtzite GaP core NWs are used as template for SiGe growth. Our approach opens up routes towards photonic band-edge lasers using group-IV NWs. Low-temperature µPL studies of arrays of SiGe NW-arrays reveal strong emission at 0.395eV and linear power dependence for weak excitation levels (P_ex~0.01-1kW/cm^2). For P_ex>4kW/cm^2, a new peak emerges at 0.37eV with an intensity that increases according to ~(P_ex)^5, indicative of stimulated emission close to the photonic band-edge.

Conference Presentation

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David Busse, Elham Fadaly, Victor T. van Lange, Jens Réne Suckert, Alain Dijkstra, Marvin van Tilburg, Claudia Rödl, Philipp Staudinger, Marcel A. Verheijen, Sebastian Kölling, Dorian Ziss, Jürgen Furthmüller, Friedhelm Bechstedt, Julian Stangl, Heinz Schmid, Silvana Botti, Erik P. A. M. Bakkers, Jos E. M. Haverkort, and Jonathan J. Finley "Towards a photonic band edge laser using hexagonal-SiGe nanowire arrays (Conference Presentation)", Proc. SPIE 11301, Novel In-Plane Semiconductor Lasers XIX, 113010K (9 March 2020); https://doi.org/10.1117/12.2544968

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KEYWORDS

Nanowires

Photonic crystals

Crystals

Crystallography

Luminescence

Optical pumping

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