论文部分内容阅读
具有高功率、单横模工作特性的垂直腔激光器(VCSEL)将会极大地扩展 VCSEL 激光器的应用领域,具备此性能的 VCSEL 激光器除了能增强它在短距离通信及光存储网络的应用之外,还将成为长距离光通信以及光传感系统里重要的器件。然而对于传统的 VCSEL 激光器,高功率和单横模工作特性很难同时获得,这是因为高功率输出通常将会增大输出孔径,大的输出孔径则会带来多横模振荡。文中通过在 p-DBR 层中引入纳米微结构,设计了一种能同时提供高功率、单横模输出的 VCSEL 激光器。这种新型的 VCSEL 激光器通过采用光子带隙的波导结构,使得设计的激光器在大输出孔径(直径达12μm)时仍然保持单横模工作。
Vertical cavity laser (VCSEL) with high power and single transverse mode operation will greatly expand the application field of VCSEL laser. VCSEL laser with this performance can not only enhance its application in short-distance communication and optical storage network, It will also become an important device in long-haul optical communications and optical sensing systems. However, with traditional VCSEL lasers, high power and single transverse mode operating characteristics are difficult to obtain at the same time because high power output usually increases the output aperture and large output aperture causes multiple transverse mode oscillations. In this paper, a VCSEL laser with high power and single transverse mode output is designed by introducing nanostructures into the p-DBR layer. The new VCSEL laser uses a waveguide structure with a photonic bandgap to allow the designed laser to remain single transverse mode at large output apertures (up to 12μm in diameter).