中国物理B ›› 2021, Vol. 30 ›› Issue (11): 114215-114215.doi: 10.1088/1674-1056/ac0daa
所属专题: SPECIAL TOPIC — Optical field manipulation
Jingyi Zhao(赵静怡)1,†, Weidong Zhang(张威东)1,†, Te Wen(温特)1, Lulu Ye(叶璐璐)1, Hai Lin(林海)1, Jinglin Tang(唐靖霖)1, Qihuang Gong(龚旗煌)1,2,3, and Guowei Lyu(吕国伟)1,2,3,‡
Jingyi Zhao(赵静怡)1,†, Weidong Zhang(张威东)1,†, Te Wen(温特)1, Lulu Ye(叶璐璐)1, Hai Lin(林海)1, Jinglin Tang(唐靖霖)1, Qihuang Gong(龚旗煌)1,2,3, and Guowei Lyu(吕国伟)1,2,3,‡
摘要: A surrounding electromagnetic environment can engineer spontaneous emissions from quantum emitters through the Purcell effect. For instance, a plasmonic antenna can efficiently confine an electromagnetic field and enhance the fluorescent process. In this study, we demonstrate that a photonic microcavity can modulate plasmon-enhanced fluorescence by engineering the local electromagnetic environment. Consequently, we constructed a plasmon-enhanced emitter (PE-emitter), which comprised a nanorod and a nanodiamond, using the nanomanipulation technique. Furthermore, we controlled a polystyrene sphere approaching the PE-emitter and investigated in situ the associated fluorescent spectrum and lifetime. The emission of PE-emitter can be enhanced resonantly at the photonic modes as compared to that within the free spectral range. The spectral shape modulated by photonic modes is independent of the separation between the PS sphere and PE-emitter. The band integral of the fluorescence decay rate can be enhanced or suppressed after the PS sphere couples to the PE-emitters, depending on the coupling strength between the plasmonic antenna and the photonic cavity. These findings can be utilized in sensing and imaging applications.
中图分类号: (Hybrid systems)