Open AccessNineteen-element in-phase coherent vertical-cavity surface-emitting laser array with low side lobe intensity
Author(s) -
Meng Xun,
Yun Sun,
JiXun Zhou,
Chen Xu,
Yiyang Xie,
Hao Wang,
Qiang Kan,
Xinyu Liu,
Zhi Jin,
Dexin Wu
Publication year - 2019
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.27.000774
Subject(s) - optics , side lobe , phase (matter) , coherence (philosophical gambling strategy) , main lobe , diffraction , vertical cavity surface emitting laser , antenna array , full width at half maximum , laser , near and far field , physics , materials science , antenna (radio) , optoelectronics , telecommunications , quantum mechanics , computer science
We apply the antenna coherence theory in order to evaluate characteristic behavior of phase-coherent VCSEL arrays. Large 19-element phase-locked VCSEL arrays with a near-diffraction-limited beam were firstly realized using proton implantation technology. The central lobe intensity is about four times that of side lobes in far-field patterns. The angular full width at half maximum (FWHM) of the far field lobes is only 1.42 degrees. A good matching between theory and experiment opens new perspectives for optimizing devices.