The Generation of a Compact Azimuthally Polarized Vertical-Cavity Surface Emitting Laser Beam with Radial Slits

• 来源期刊: 中国物理快报（英文版）
• 年，卷（期）: 2013,（3）
• 页码范围: 78-80
• 页数: 3页
• 语种: 英文
• DOI: 10.1088/0256-307X/30/3/034206

摘要

We propose the simple and efficient generation of a compact azimuthally polarized laser beam.Radial silts with annular distribution are patterned onto the output facet of a standard vertical-cavity surface emitting laser.Due to the polarization modulation of the surface plasmon polariton mode excited by the radial slits,a compact azimuthally polarized laser beam at 850nm is experimentally demonstrated.The finite-difference time-domain method is introduced to analyze the polarization characteristics of the transmitted light through the radial slit,which agrees well with our experimental results.