摘要
基于光子晶体技术在一维光子晶体带隙内引入缺陷态模式,并对激光器谐振腔内部电磁场分布和共振波长进行调制,从而将单一波长分裂为双波长输出.最终制备出了一种新的具有双波长光谱输出特性的垂直腔面发射激光器,缺陷层为Al0.8Ga0.2As材料,厚度为5λ/4.所得到的双波长输出光谱具有低吸收损耗、输出波长容易控制及同方向垂直输出特性.同时,通过调整一维光子晶体的折射率差和缺陷层厚度可以有效调谐双波长的间距及输出波段.所设计的双波长垂直腔面发射激光器结构同样适合于其他光电子器件,如光开关、光放大器、调制器及光电探测器等.
Based on asymmetric one-dimensional photonic crystal structure,a dual-wavelength vertical-cavity surface-emitting laser （VCSEL） with modified standing wave field distribution has been constructed. The defect layer is Al0.8Ga0.2As with 5λ /4 thickness. Specifically,the dual-wavelength output spectrum of the VCSEL has low absorption loss,easy wavelength adjustment and same output direction. In addition,the two wavelengths and their spacing could be tuned by changing the refractive index contrast of the asymmetric PC structure and the thickness of defect layer. Such dual-VCSEL structure can be applied in optical bistable switches,amplifiers,modulators and detectors,etc. .
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
2011年第1期280-283,共4页
Acta Physica Sinica
基金
国家重点基础研究发展计划(批准号:2006CB604902)
国家自然科学基金(批准号:60908012)资助的课题~~
