1. Photoluminescence and terahertz time-domain spectroscopy of MBE-grown single-layered InAs/GaAs quantum dots
- Author
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Lorenzo Lopez, Alexander De Los Reyes, Armando Somintac, Arnel Salvador, Che-Yung Chang, Hannah Bardolaza, John Daniel Vasquez, Der-Jun Jang, and Elmer Estacio
- Subjects
010302 applied physics ,Pl spectroscopy ,Photoluminescence ,Materials science ,Condensed Matter::Other ,business.industry ,Terahertz radiation ,Physics::Optics ,Condensed Matter::Mesoscopic Systems and Quantum Hall Effect ,01 natural sciences ,010309 optics ,Condensed Matter::Materials Science ,Quantum dot ,0103 physical sciences ,Optoelectronics ,Terahertz time-domain spectroscopy ,business ,Spectroscopy ,Excitation ,Laser beams - Abstract
We study the photoluminescence (PL) and terahertz (THz) emission characteristics of MBE-grown InAs/GaAs single-layered quantum dots. Results from temperature-dependent and excitation power-dependent PL spectroscopy have revealed the presence of energy peaks corresponding to two possible quantum dot size distributions. The THz emission was found to increase as temperature increases, which we attribute to the increase in the number of carriers undergoing transport.
- Published
- 2018
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