• Special Issue
  • Extraordinary 2D Materials Based Nanophotonics
  • 14 Article (s)
Editorial for special issue on extraordinary 2D-materials-based nanophotonics
Han Zhang, Haibo Zeng, and Qiaoliang Bao
Chinese Optics Letters
  • Publication Date: Feb. 10, 2019
  • Vol.17 Issue, 2 020001 (2019)
High responsivity and near-infrared photodetector based on graphene/MoSe2 heterostructure
Beiyun Liu, Congya You, Chen Zhao, Gaoliang Shen, Yawei Liu, Yufo Li, Hui Yan, and Yongzhe Zhang
Chinese Optics Letters
  • Publication Date: Feb. 10, 2019
  • Vol.17 Issue, 2 020002 (2019)
Active–passive pulse laser based on gold nanobipyramids at 1.3 μm wavelength
Cong Wang, Qianqian Peng, Linlin Xin, and Jie Liu
Chinese Optics Letters
  • Publication Date: Feb. 10, 2019
  • Vol.17 Issue, 2 020003 (2019)
Passively Q-switched cylindrical vector laser based on a black phosphorus saturable absorber
Zhiwen He, Yang Zheng, Hongyan Liu, Mingkun Li, Hua Lu, Heze Zhang, Qingliang Feng, and Dong Mao
Chinese Optics Letters
  • Publication Date: Feb. 10, 2019
  • Vol.17 Issue, 2 020004 (2019)
Electron–phonon coupling in topological insulator Bi2Se3 thin films with different substrates
Tian Jiang, Runlin Miao, Jie Zhao, Zhongjie Xu, Tong Zhou, Ke Wei, Jie You, Xin Zheng, Zhenyu Wang, and Xiang'ai Cheng
Broadband transient reflectivity traces were measured for Bi2Se3 thin films with various substrates via a 400 nm pump–white-light-probe setup. We have verified the existence of a second Dirac surface state in Bi2Se3 and qualitatively located it by properly analyzing the traces acquired at different probe wavelengths. Referring to the band structure of Bi2Se3, the relaxation mechanisms for photo-excited electrons with different energies are also revealed and studied. Our results show a second rise of the transient reflection signal at the time scale of several picoseconds. The types of substrate can also significantly affect the dynamics of the rising signal. This phenomenon is attributed to the effect of lattice heating and coherent phonon processes. The mechanism study in this work will benefit the fabrication of high-performance photonic devices based on topological insulators.
Chinese Optics Letters
  • Publication Date: Feb. 10, 2019
  • Vol.17 Issue, 2 020005 (2019)
Q-switched fiber laser operating at 1.5  μm based on WTe2
Mengli Liu, Yuyi Ouyang, Huanran Hou, Wenjun Liu, and Zhiyi Wei
Chinese Optics Letters
  • Publication Date: Feb. 10, 2019
  • Vol.17 Issue, 2 020006 (2019)
Graphene Tamm plasmon-induced giant Goos–Hänchen shift at terahertz frequencies
Jiao Tang, Jiao Xu, Zhiwei Zheng, Hu Dong, Jun Dong, Shengyou Qian, Jun Guo, Leyong Jiang, and Yuanjiang Xiang
In this Letter, we have shown that a giant Goos–H nchen shift of a light beam reflected at terahertz frequencies can be achieved by using a composite structure, where monolayer graphene is coated on one-dimensional photonic crystals separated by a dielectric slab. This giant Goos–H nchen shift originates from the enhancement of the electrical field, owing to the excitation of optical Tamm states at the interface between the graphene and one-dimensional photonic crystal. It is shown that the Goos–H nchen shift in this structure can be significantly enlarged negatively and can be switched from negative to positive due to the tunability of graphene’s conductivity. Moreover, the Goos–H nchen shift of the proposed structure is sensitive to the relaxation time of graphene and the thickness of the top layer, making this structure a good candidate for a dynamic tunable optical shift device in the terahertz regime.
Chinese Optics Letters
  • Publication Date: Feb. 10, 2019
  • Vol.17 Issue, 2 020007 (2019)
Manipulating optical Tamm state in the terahertz frequency range with graphene
Leyong Jiang, Jiao Tang, Qingkai Wang, Yuexiang Wu, Zhiwei Zheng, Yuanjiang Xiang, and Xiaoyu Dai
The optical Tamm state (OTS), which exists generally at the interface between metal and a dielectric Bragg mirror, has been studied extensively in the visible and near infrared spectra. Nevertheless, OTS in the terahertz (THz) region normally receives far less attention. In this Letter, we demonstrate the physical mechanism of OTS at the interface between graphene and a dielectric Bragg mirror in the THz frequency band by applying the transfer matrix method and dispersion characteristics. Based on such mechanisms, we propose an efficient method that can precisely generate and control OTS at a desired angle and frequency. Moreover, we show that the OTS is dependent on the optical conductivity of graphene, making the graphene–dielectric-Bragg-mirror a good candidate for dynamic tunable OTS device in the THz frequency range.
Chinese Optics Letters
  • Publication Date: Feb. 10, 2019
  • Vol.17 Issue, 2 020008 (2019)
Electronic and optical properties of an intrinsic type-I band alignment ZrS2/SnS2 van der Waals heterostructure for optoelectronic devices
Jimin Shang, Shuai Zhang, Yongqiang Wang, Hongyu Wen, and Zhongming Wei
Chinese Optics Letters
  • Publication Date: Feb. 10, 2019
  • Vol.17 Issue, 2 020010 (2019)

Chinese Optics Letters (COL) invites original manuscript submissions for a Feature Issue on Extraordinary 2D Materials Based Nanophotonics to be published in February 2019. Extraordinary two-dimensional materials (E2DMs) beyond graphene such as black phosphorus (BP), Antimonene and MXene exhibit excellent optoelectronic and mechanical properties as well as high theoretical specific capacity, which make them potentially cover a broad wavelength range from mid-infrared to partial visible spectrum for light detection, modulation and generation applications.