Room-temperature continuous-wave operation of GaInNAs/GaAs quantum dot laser with GaAsN barrier grown by solid source molecular beam epitaxy


Autoria(s): Sun, Z. Z.; Yoon, Soon Fatt; Yew, K. C.; Bo, B. X.; Yan, Du An; Tung, Chih-Hang
Data(s)

14/12/2004

14/12/2004

01/01/2005

Resumo

We present the results of GaInNAs/GaAs quantum dot structures with GaAsN barrier layers grown by solid source molecular beam epitaxy. Extension of the emission wavelength of GaInNAs quantum dots by ~170nm was observed in samples with GaAsN barriers in place of GaAs. However, optimization of the GaAsN barrier layer thickness is necessary to avoid degradation in luminescence intensity and structural property of the GaInNAs dots. Lasers with GaInNAs quantum dots as active layer were fabricated and room-temperature continuous-wave lasing was observed for the first time. Lasing occurs via the ground state at ~1.2μm, with threshold current density of 2.1kA/cm[superscript 2] and maximum output power of 16mW. These results are significantly better than previously reported values for this quantum-dot system.

Singapore-MIT Alliance (SMA)

Formato

398089 bytes

application/pdf

Identificador

http://hdl.handle.net/1721.1/7466

Idioma(s)

en

Relação

Innovation in Manufacturing Systems and Technology (IMST);

Palavras-Chave #Gallium Arsenide Nitride #continuous-wave lasers #quantum dot structures #Arsenic #Gallium Arsenide #GaAsN barrier layer #Gallium Indium Nitride Arsenide #Nitrogen
Tipo

Article