Contents
2020
Volume: 18 Issue 8
16 Article(s)

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SPECIAL ISSUE ON SOFT-MATTER PHOTONICS
Editorial for special issue on soft-matter photonics (soft mattonics)
Zhigang Zheng, Wei Hu, and Chenhui Peng
Chinese Optics Letters
  • Publication Date: Aug. 10, 2020
  • Vol. 18, Issue 8, 080001 (2020)
Ferroelectric liquid crystals for fast switchable circular Dammann grating [Invited]
Qi Guo, Tian Liu, Xiaoqian Wang, Zhigang Zheng, Aleksey Kudreyko, Huijie Zhao, V. Chigrinov, and Hoi-Sing Kwok
Chinese Optics Letters
  • Publication Date: Aug. 10, 2020
  • Vol. 18, Issue 8, 080002 (2020)
Photopatterned liquid crystal mediated terahertz Bessel vortex beam generator [Invited]
Yanchun Shen, Zhixiong Shen, Guozhong Zhao, and Wei Hu
Chinese Optics Letters
  • Publication Date: Aug. 10, 2020
  • Vol. 18, Issue 8, 080003 (2020)
Silk: a versatile biomaterial for advanced optics and photonics [Invited] | On the Cover
Yushu Wang, Meng Li, and Yu Wang
Chinese Optics Letters
  • Publication Date: Aug. 10, 2020
  • Vol. 18, Issue 8, 080004 (2020)
Electrically tunable helicity of cholesteric heliconical superstructure [Invited]
Conglong Yuan, Wenbin Huang, Xiaoqian Wang, Dong Shen, and Zhigang Zheng
The dynamic manipulation of the helicity in a cholesteric helical superstructure could enable precise control over its physical and chemical properties, thus opening numerous possibilities for exploring multifunctional devices. When cholesteric material satisfies the sufficiently small bending elastic effect, an electrically induced deformation named the cholesteric heliconical superstructure is formed. Through theoretical and numerical analysis, we systematically studied the tunable helicity of the heliconical superstructure, including the evolution of the corresponding oblique angle and pitch length. To further confirm the optical properties, Berreman’s 4 × 4 matrix method was employed to numerically analyze the corresponding structure reflection under the dual stimuli of chirality and electric field.
Chinese Optics Letters
  • Publication Date: Aug. 10, 2020
  • Vol. 18, Issue 8, 080005 (2020)
Polymerized cholesteric liquid crystal microdisks generated by centrifugal microfluidics towards tunable laser emissions [Invited] | Editors' Pick
Ya-Hao Ge, Yi-Mei Lan, Xing-Rui Li, Yu-Wei Shan, Yu-Jie Yang, Sen-Sen Li, Chaoyong Yang, and Lu-Jian Chen
Chinese Optics Letters
  • Publication Date: Aug. 10, 2020
  • Vol. 18, Issue 8, 080006 (2020)
Holographically fabricated, highly reflective nanoporous polymeric distributed Bragg reflectors with red, green, and blue colors [Invited]
Haodong Jiang, Wenfeng Cai, Ke Li, Ming Cheng, Vineet Kumar, Zhen Yin, Davy Gérard, Dan Luo, Quanquan Mu, and Yanjun Liu
We report holographic fabrication of nanoporous distributed Bragg reflector (DBR) films with periodic nanoscale porosity via a single-prism conuration. The nanoporous DBR films result from the phase separation in a material recipe, which consists of a polymerizable acrylate monomer and nonreactive volatile solvent. By changing the interfering angle of two laser beams, we achieve the nanoporous DBR films with highly reflective red, green, and blue colors. The reflection band of the nanoporous DBR films can be tuned by further filling different liquids into the pores inside the films, resulting in the color change accordingly. Experimental results show that such kinds of nanoporous DBR films could be potentially useful for many applications, such as color filters and refractive index sensors.
Chinese Optics Letters
  • Publication Date: Aug. 10, 2020
  • Vol. 18, Issue 8, 080007 (2020)
Circular Airy beams realized via the photopatterning of liquid crystals [Invited]
Yuan Zhang, Bingyan Wei, Sheng Liu, Peng Li, Xin Chen, Yunlong Wu, Xian’an Dou, and Jianlin Zhao
Chinese Optics Letters
  • Publication Date: Aug. 10, 2020
  • Vol. 18, Issue 8, 080008 (2020)
Research Articles
Atomic and Molecular Optics
Improving the NV generation efficiency by electron irradiation
Bowen Zhao, Yang Dong, Shaochun Zhang, Xiangdong Chen, Wei Zhu, and Fangwen Sun
Chinese Optics Letters
  • Publication Date: Aug. 10, 2020
  • Vol. 18, Issue 8, 080201 (2020)
Nonlinear Optics
Femtosecond laser trapping dynamics of two-photon absorbing hollow-core nanoparticles
Liping Gong, Xiaohe Zhang, Zhuqing Zhu, Guanghao Rui, Jun He, Yiping Cui, and Bing Gu
We investigate femtosecond laser trapping dynamics of two-photon absorbing hollow-core nanoparticles with different volume fractions and two-photon absorption (TPA) coefficients. Numerical simulations show that the hollow-core particles with low and high-volume fractions can easily be trapped and bounced by the tightly focused Gaussian laser pulses, respectively. Further studies show that the hollow-core particles with and without TPA can be identified, because the TPA effect enhances the radiation force, and subsequently the longitudinal force destabilizes the trap by pushing the particle away from the focal point. The results may find direct applications in particle sorting and characterizing the TPA coefficient of single nanoparticles.
Chinese Optics Letters
  • Publication Date: Aug. 10, 2020
  • Vol. 18, Issue 8, 081901 (2020)
Optical Sensing, Measurements, and Metrology
Self-copy-shift-based differential phase extracting method for fiber distributed acoustic sensing
Wenjie Chen, Junfeng Jiang, Kun Liu, Shuang Wang, Zhe Ma, Guanhua Liang, Zhenyang Ding, Tianhua Xu, and Tiegen Liu
Chinese Optics Letters
  • Publication Date: Aug. 10, 2020
  • Vol. 18, Issue 8, 081201 (2020)
Hybrid calibration method of a wide-view-angle Mueller polarimeter for hyper-numerical-aperture imaging systems
Jianhui Li, Yanqiu Li, Ke Liu, Guodong Zhou, Lihui Liu, and Meng Zheng
Chinese Optics Letters
  • Publication Date: Aug. 10, 2020
  • Vol. 18, Issue 8, 081202 (2020)
Plasmonics and Metamaterials
Chromatic dispersion manipulation based on metasurface devices in the mid-infrared region
Lin Li, Quan Yuan, Run Chen, Xiujuan Zou, Wenbo Zang, Tianyue Li, Gaige Zheng, Shuming Wang, Zhenlin Wang, and Shining Zhu
The chromatic aberration of metasurfaces limits their application. How to cancel or utilize the large chromatic dispersion of metasurfaces becomes an important issue. Here, we design Si-based metasurfaces to realize flexible chromatic dispersion manipulation in mid-infrared region. We demonstrate the broadband achromatic metalens and achromatic gradient metasurface to cancel the chromatic aberration over a continuous bandwidth (8–12 μm). In contrast, the metalens and gradient metasurface with enhanced chromatic dispersion have also been realized, where the focal length and deflection angle with different wavelengths vary more significantly than the conventional devices designed with geometric phase. These demonstrations indicate promising potential applications.
Chinese Optics Letters
  • Publication Date: Aug. 10, 2020
  • Vol. 18, Issue 8, 082401 (2020)
Quantum Optics and Quantum Information
High-quality quantum process tomography of time-bin qubit’s transmission over a metropolitan fiber network and its application
Peiyu Zhang, Liangliang Lu, Fangchao Qu, Xinhe Jiang, Xiaodong Zheng, Yanqing Lu, Shining Zhu, and Xiao-Song Ma
Chinese Optics Letters
  • Publication Date: Aug. 10, 2020
  • Vol. 18, Issue 8, 082701 (2020)
Spectroscopy
Periphery excitation of laser-induced CN fluorescence in plasma using laser-induced breakdown spectroscopy for carbon detection
Nan Zhao, Jiaming Li, Qiongxiong Ma, Liang Guo, and Qingmao Zhang
Chinese Optics Letters
  • Publication Date: Aug. 10, 2020
  • Vol. 18, Issue 8, 083001 (2020)
Thin Films and Optics at Surfaces
Effects of various substrate materials on structural and optical properties of amorphous silicon nitride thin films deposited by plasma-enhanced chemical vapor deposition
Liangyi Hang, Weiguo Liu, and Junqi Xu
The plasma-enhanced chemical vapor deposition (PECVD) technique is well suited for fabricating optical filters with continuously variable refractive index profiles; however, it is not clear how the optical and structural properties of thin films differ when deposited on different substrates. Herein, silicon nitride films were deposited on silicon, fused silica, and glass substrates by PECVD, using silane and ammonia, to investigate the effects of the substrate used on the optical properties and structures of the films. All of the deposited films were amorphous. Further, the types and amounts of Si-centered tetrahedral Si–SivN4-v bonds formed were based upon the substrates used; Si–N4 bonds with higher elemental nitrogen content were formed on Si substrates, which lead to obtaining higher refractive indices, and the Si–SiN3 bonds were mainly formed on glass and fused silica substrates. The refractive indices of the films formed on the different substrates had a maximum difference of 0.05 (at 550 nm), the refractive index of SiNx films formed on silicon substrates was 1.83, and the refractive indices of films formed on glass were very close to those formed on fused silica. The deposition rates of these SiNx films are similar, and the extinction coefficients of all the films were lower than 10?4.
Chinese Optics Letters
  • Publication Date: Aug. 10, 2020
  • Vol. 18, Issue 8, 083101 (2020)