A Single-Fundamental-Mode Photonic Crystal Vertical Cavity Surface Emitting Laser

• 作者: 刘英明 徐晨 沈光地 王宝强 王春霞 解意洋 阚强 陈弘达
• 来源期刊: 中国物理快报(英文版)
• 学科: 工学
• 关键词: 垂直腔表面发射激光器 二维光子晶体 电感耦合等离子体 VCSEL 分布布拉格反射 有效折射率模型 光子晶体光纤 远场发散角
• 年，卷（期）: 2010,（2）
• 页码范围: 100-102
• 页数: 3页
• 分类号: TN248 TN201
• 语种: 英文

摘要

Single-fundamental-mode photonic crystal (PhC) vertical cavity surface emitting lasers (VCSEL) are produced and their single-fundamental-mode performances are investigated and demonstrated. A two-dimensional PhC with single-point-defect structure is fabricated using UV photolithography and inductive coupled plasma reactive ion etching on the surface of the VCSEL's top distributed Bragg-reflector. The PhC VCSEL maintains single-fundamental-mode operating with output power 1.7 mW and threshold current 2.5 mA. The full width half maximum of the lasing spectrum is less than 0.1 nm, the far field divergence angle is less than 10° and the side mode suppression ratio is over 35 dB. The device characteristics are analyzed based on the effective index model of the photonic crystal fiber. The experimental results agree well with the theoretical expectation.