標題: GaN vertical-cavity surface-emitting laser with a high-contrast grating reflector
作者: Chang, Tsu-Chi
Kuo, Shuo-Yi
Hashemi, Ehsan
Haglund, Asa
Lu, Tien-Chang
光電工程學系
Department of Photonics
關鍵字: TiO2;high contrast grating (HCG);GaN;vertical cavity surface emitting laser (VCSEL)
公開日期: 1-Jan-2018
摘要: We report a GaN-based VCSEL with a high-contrast grating (HCG) as the top mirror. The HCG consisted of TiO2 and rested directly on the n-GaN without an airgap or the use of any DBR layers to boost the reflectivity. The full VCSEL structure was optically pumped at room temperature and showed a lasing threshold of approximately 0.69MW/cm(2) and a lasing wavelength at 369.1 nm. This first demonstration of lasing in a HCG GaN based VCSEL opens up the possibility to explore all the potential benefits of HCGs in the blue and ultraviolet spectral regime.
URI: http://dx.doi.org/10.1117/12.2289318
http://hdl.handle.net/11536/150886
ISSN: 0277-786X
DOI: 10.1117/12.2289318
期刊: HIGH CONTRAST METASTRUCTURES VII
Volume: 10542
Appears in Collections:Conferences Paper