Please wait a minute...
Chin. Phys. B, 2024, Vol. 33(11): 118701    DOI: 10.1088/1674-1056/ad7fd2
INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY Prev  

Topological slow light and rainbow trapping of surface wave in valley photonic crystal bounded by air

Shuheng Chen(陈书恒)1,2, Yi Qi(齐奕)1,2, Yucen Li(李昱岑)1,2, Qihao Wang(王琪皓)1,2, and Yuanjiang Xiang(项元江)1,2,†
1 Research Institute of Hunan University in Chongqing, Chongqing 401120, China;
2 School of Physics and Electronics, Hunan University, Changsha 410082, China
Abstract  Topological slow light and rainbow trapping tend to rely on large-scale interface structure in previous research work, which have restricted further miniaturization. In this work, we propose a method to realize slow light and rainbow trapping at the zigzag edge of a single valley photonic crystals (VPCs) bounded by air, which is very different from previous studies where rainbow trapping is supported at the interface separating two VPCs with inversion symmetry. By constructing the VPC-air boundaries and VPC-VPC interfaces experimentally, we have observed the topologically protected rainbow trapping simultaneously at the external and internal boundary. This work provides a feasible platform for the miniaturized optical communication devices such as optical buffers, optical storage and optical routing.
Keywords:  topological slow light      rainbow trapping      valley photonic crystals  
Received:  28 August 2024      Revised:  23 September 2024      Accepted manuscript online:  26 September 2024
PACS:  87.80.Cc (Optical trapping)  
  03.65.Vf (Phases: geometric; dynamic or topological)  
  42.70.Qs (Photonic bandgap materials)  
Fund: Project supported by the National Natural Science Foundation of China (Grant No. 12374302) and the Natural Science Foundation of Chongqing (Grant No. CSTB2022NSCQMSX0872).
Corresponding Authors:  Yuanjiang Xiang     E-mail:  xiangyuanjiang@126.com

Cite this article: 

Shuheng Chen(陈书恒), Yi Qi(齐奕), Yucen Li(李昱岑), Qihao Wang(王琪皓), and Yuanjiang Xiang(项元江) Topological slow light and rainbow trapping of surface wave in valley photonic crystal bounded by air 2024 Chin. Phys. B 33 118701

[1] Wang Z, Chong Y D, Joannopoulos J D and Soljačić M 2009 Nature 461 772
[2] Haldane F D and Raghu S 2008 Phys. Rev. Lett. 100 013904
[3] Baba T 2008 Nat. Photon. 2 465
[4] Haldane F D 1988 Phys. Rev. Lett. 61 2015
[5] Hatsugai Y 1993 Phys. Rev. Lett. 71 3697
[6] Dong J W, Chen X D, Zhu H, Wang Y and Zhang X 2017 Nat. Mater. 16 298
[7] Ma T and Shvets G 2016 New J. Phys. 18 025012
[8] Chen X D, Zhao F L, Chen M and Dong J W 2017 Phys. Rev. B 96 020202
[9] Chen M, Jiang L J, Lan Z and Sha W 2020 Opt. Express 28 14428
[10] Feng Y, Zhang Z, Qin F, Lan Z, Sha W and Xu Y 2022 Opt. Lett. 47 3107
[11] Wei G, Liu Z, Wu H, Wang L, Wang S and Xiao J 2022 Opt. Lett. 47 3007
[12] Zhang Z, Lan Z, Xie Y, Chen M, Sha W and Xu Y 2021 Phys. Rev. Lett. 16 064036
[13] Yu L, Xue H and Zhang B 2021 Appl. Phys. Lett. 118 071102
[14] Wu L H and Hu X 2015 Phys. Rev. Lett. 114 223901
[15] Elshahat S, Wang C, Zhang H and Lu C 2021 Appl. Phys. Lett. 119 230505
[16] Chen J, Qin Q, Peng C, Liang W and Li Z Y 2021 Front. Mater. 8 728991
[17] Lu C, Wang C, Xiao M, Zhang Z Q and Chan C T 2021 Phys. Rev. Lett. 126 113902
[18] Lu C, Sun Y, Wang C, Zhang H, Zhao W, Hu X, Xiao M, Ding W, Liu Y C and Chan C T 2022 Nat. Commun. 13 2586
[19] Zhao W, Zheng Y and Lu C 2022 Photon. Res. 10 2728
[20] Mao Y, Li Z, Hu W, Dai X and Xiang Y 2022 J. Lightwave Technol. 40 5152
[21] Liang L, Zhou X, Hu J H, Wang H X, Jiang J H and Hou B 2022 Opt. Lett. 47 1454
[22] Liu J, Lu X, Dai X and Xiang Y 2022 J. Appl. Phys. 132 173105
[23] Neseli B, Bor E, Kurt H and Turduev M 2020 J. Opt. Soc. Am. B 37 1249
[24] Ding F, Mao Y, Shen J, Dai X and Xiang Y 2022 Opt. Lett. 47 5650
[25] Mao Y, Hu W, Li Z, Dai X and Xiang Y 2022 J. Opt. Soc. Am. B 39 1241
[26] Shen Y F, Xu X, Sun M, Zhou W J and Chang Y J 2024 Chin. Phys. B 33 044203
[27] Wan X, Peng C, Li G, Yang J and Qi X 2023 Chin. Phys. B 32 114208
[28] Zhang H, Qian L, Wang C, Ji C Y, Liu Y, Chen J and Lu C 2021 Opt. Lett. 46 1237
[1] Topological resonators based on hexagonal-star valley photonic crystals
Xin Wan(万鑫), Chenyang Peng(彭晨阳), Gang Li(李港), Junhao Yang(杨俊豪), and Xinyuan Qi(齐新元). Chin. Phys. B, 2023, 32(11): 114208.
No Suggested Reading articles found!