摘要
垂直腔面发射激光器的单模输出特性在光网络数据传输光互连、光存储和激光打印中有重要的应用。传统的氧化限制型垂直腔面发射半导体激光器由于串联电阻大、发热严重而很难工作在单模状态。二维光子晶体结构可以有效地控制垂直腔面发射激光器的横向模式,使器件工作在单模状态下。从理论上系统研究了光子晶体垂直腔面发射半导体激光器的单模条件,成功设计了一组单模光子晶体垂直腔面发射半导体激光器,并通过常规工艺制作出功率0.6mW、边模抑制比大于30dB、阈值电流4mA、远场发散角8.4°、不受电流注入影响的单模光子晶体垂直腔面发射半导体激光器。实验证明:光子晶体可有效地进行横模控制。
Operation of a VCSEL in the fundamental lateral mode is important for free space optical interconnects, data communication through single mode fiber, and modulation spectroscopy. Unfortunately, the VCSEL has a tendency to lase at multiple wavelengths. The two-dimensional photonic crystal （2-D PhC） structure is applied to lateral mode control of vertical-cavity surface-emitting laser （VCSEL）. The characteristics of lasing lateral modes in PhC-VCSEL were analyzed. The single lateral mode operating conditions of the VCSEL confined by 2-D photonic crystal has been obtained. A PhC-VCSEL maintains single-fundamental-mode operating with output power 0.6 mW and threshold current 4 mA. The full width half maximum of the lasing spectrum is less than 0.1 nm, the far field divergence angle is 8.4° and the side mode suppression ratio is over 30 dB was fabricated. Photonic crystal is an effective and flexible way to control lateral lasing modes by introducing photonic crystal confinement to top distributed Bragg reflector of VCSEL.
出处
《红外与激光工程》
EI
CSCD
北大核心
2010年第3期460-463,共4页
Infrared and Laser Engineering
基金
国家高技术研究发展计划资助项目(2008AA03Z402
2009AA03ZA12)
国家重点基础研究发展计划资助项目(2009CB320300)
国家自然科学基金资助项目(60807010
60736037
60887030)
北京市自然科学基金资助项目(4092007)
