氮化镓基光子晶体面发射激光器的阈值增益分析。

Threshold gain analysis in GaN-based photonic crystal surface emitting lasers.

机构信息

Department of Photonics & Institute of Electro-Optical Engineering, National Chiao Tung University, Hsinchu 30050, Taiwan.

出版信息

Opt Lett. 2011 May 15;36(10):1908-10. doi: 10.1364/OL.36.001908.

DOI:10.1364/OL.36.001908

PMID:21593931

Abstract

We have analyzed threshold gains and lasing modes in GaN-based photonic crystal (PC) surface emitting lasers (PCSELs) by using the multiple scattering method (MSM) for triangular-lattice PC patterns. Moreover, GaN-based PCSELs with different boundary shapes have been fabricated and measured. The lasing mode at the Γ band edge of GaN-based PCSELs can be identified by using the angled resolved spectroscopy and matched well to the results calculated by MSM. Threshold conditions in the GaN-based PCSELs with different boundary shapes are obtained by optical pumping and agree well with simulation results.

摘要

我们使用多重散射方法（MSM）分析了基于 GaN 的光子晶体（PC）面发射激光器（PCSEL）的阈值增益和激光模式，针对的是三角形晶格 PC 图案。此外，还制造和测量了具有不同边界形状的基于 GaN 的 PCSEL。通过角度分辨光谱可以识别基于 GaN 的 PCSEL 的 Γ 带边缘的激光模式，并且与 MSM 计算的结果非常吻合。通过光泵浦获得了具有不同边界形状的基于 GaN 的 PCSEL 的阈值条件，并且与模拟结果吻合得很好。