Symmetry Criterion and Far-Field Control of Photonic-Crystal Surface-Emitting Lasers

doi:10.3390/app122010581

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	Symmetry Criterion and Far-Field Control of Photonic-Crystal Surface-Emitting Lasers
	Z. Y. Wang; P. Y. Wang; H. Y. Lu; B. Meng; Y. J. Wang; C. Z. Tong and L. J. Wang
	2022
发表期刊	Applied Sciences-Basel
卷号	12 期号:20 页码:10
摘要	Photonic-crystal surface-emitting lasers (PCSELs) have led to amazing results in overcoming the divergence limitation of semiconductor lasers. However, so far, the physical mechanism behind this promising control of far-field characteristics is still unclear. Here, we perform a theoretical study of the mechanism of the influence of photonic crystal (PhC) geometry on the far field of PCSELs. The perspective from group theory is adopted in our analysis. We explore the function of symmetry in the formation of the far-field pattern (FFP) and clarify the roles played by various PhC parameters in this process. Through our analysis, a symmetry criterion to design PCSELs with single-lobed narrow beams is shown, where an asymmetric in-plane PhC structure, a large vertical confinement factor, and a sufficient number of periods are required. Our results reveal the physical origin of the narrow beam of PCSELs, which can even reach 0.1 degrees with a PhC cavity size of over 1000 mu m at a lasing wavelength of 940 nm.
DOI	10.3390/app122010581
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收录类别	sci
语种	英语
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/67145
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	Z. Y. Wang,P. Y. Wang,H. Y. Lu,et al. Symmetry Criterion and Far-Field Control of Photonic-Crystal Surface-Emitting Lasers[J]. Applied Sciences-Basel,2022,12(20):10.
APA	Z. Y. Wang,P. Y. Wang,H. Y. Lu,B. Meng,Y. J. Wang,&C. Z. Tong and L. J. Wang.(2022).Symmetry Criterion and Far-Field Control of Photonic-Crystal Surface-Emitting Lasers.Applied Sciences-Basel,12(20),10.
MLA	Z. Y. Wang,et al."Symmetry Criterion and Far-Field Control of Photonic-Crystal Surface-Emitting Lasers".Applied Sciences-Basel 12.20(2022):10.

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