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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
刊名	Applied Sciences-Basel
	2022
卷号	12期号:20页码:10
DOI	10.3390/app122010581
英文摘要	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.
URL标识	查看原文
语种	英语
内容类型	期刊论文
源URL	[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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