Multiwavelength fabrication of vertical-cavity surface-emitting lasers based on asymmetric one-dimensional photonic crystal.
- Resource Type
- Article
- Authors
- Guan, B. L.; Guo, X.; Ren, X. J.; Li, S.; Shen, G. D.
- Source
- Journal of Applied Physics. Sep2011, Vol. 110 Issue 5, p053101. 4p.
- Subject
- *PHOTONICS
*REFRACTIVE index
*OPTOELECTRONICS
*ELECTROOPTICS
*LASERS
- Language
- ISSN
- 0021-8979
A dual-wavelength vertical-cavity surface-emitting laser with an asymmetric one-dimensional photonic crystal structure was demonstrated based on the band-gap theory. The wavelengths of the VCSEL can be located at 979.7 and 943 nm with the aid of the Al0.8Ga0.2As defect layer. Particularly, the lasing of the dual-wavelength VCSEL was in the same light propagation direction for both the wavelengths with a high Q factor. Furthermore, the relative peaks position of the two wavelengths can be tuned from ∼33 to ∼50 nm by adjusting the refractive index contrast of the asymmetric photonic crystal structure, which will promote the formation of multidefect mode states. [ABSTRACT FROM AUTHOR]