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Aman G, Lysevych M, Tan HH, Jagadish C, Schmitzer H, Fränzl M, Cahay M, Wagner HP. Lasing in Zn-doped GaAs nanowires on an iron film. Nanotechnology 2023; 34. [PMID: 37473744 DOI: 10.1088/1361-6528/ace914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Accepted: 07/20/2023] [Indexed: 07/22/2023]
Abstract
In this work, we demonstrate optically pumped lasing in highly Zn-doped GaAs nanowires (NWs) lying on an iron film. The conically shaped NWs are first covered with an 8 nm thick Al2O3film to prevent atmospheric oxidation and mitigate band-bending effects. Multimode and single-mode lasing have been observed for NWs with a length greater or smaller than 2μm, respectively. Finite difference time domain calculations reveal a weak electric field enhancement in the Al2O3layer at the NW/iron film interface for the lasing modes. The high Zn acceptor concentration in the NWs provides enhanced radiative efficiency and enables lasing on the iron film despite plasmonic losses. Our results open avenues for integrating NW lasers on ferromagnetic substrates to achieve new functionalities, such as magnetic field-induced modulation.
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Affiliation(s)
- Gyanan Aman
- Department of Electrical and Computer Engineering, University of Cincinnati, Cincinnati, OH 45221, United States of America
| | - Mykhaylo Lysevych
- Department of Electronic Materials Engineering, ARC Center of Excellence for Transformative Meta-Optical Systems, Research School of Physics, The Australian National University, Canberra, ACT 2600, Australia
| | - Hark Hoe Tan
- Department of Electronic Materials Engineering, ARC Center of Excellence for Transformative Meta-Optical Systems, Research School of Physics, The Australian National University, Canberra, ACT 2600, Australia
| | - Chennupati Jagadish
- Department of Electronic Materials Engineering, ARC Center of Excellence for Transformative Meta-Optical Systems, Research School of Physics, The Australian National University, Canberra, ACT 2600, Australia
| | - Heidrun Schmitzer
- Department of Physics, Xavier University, Cincinnati, OH 45207, United States of America
| | - Martin Fränzl
- Department of Physics, University of Leipzig, D-04109, Germany
| | - Marc Cahay
- Department of Electrical and Computer Engineering, University of Cincinnati, Cincinnati, OH 45221, United States of America
| | - Hans Peter Wagner
- Department of Electrical and Computer Engineering, University of Cincinnati, Cincinnati, OH 45221, United States of America
- Department of Physics, University of Cincinnati, Cincinnati, OH 45221, United States of America
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