About the Cover:
The SU(2) transformation in the Jordan-Schwinger map is exploited to derive the wave function for the Hermite-Laguerre-Gaussian (HLG) modes which are the generalized transverse modes of spherical laser resonators. The image is numerical patterns for the high-order HLG mode.
Research Articles
Atomic and Molecular Optics
Portable atomic gravimeter operating in noisy urban environments 
Bin Chen, Jinbao Long, Hongtai Xie, Chenyang Li, Luokan Chen, Bonan Jiang, and Shuai Chen
Vol. 18, Issue 9, 090201 (2020)
Fiber Optics and Optical Communications
Augmented communications: spectral efficiency and security enhanced visible light communications by design
Monette H. Khadr and Hany Elgala
Vol. 18, Issue 9, 090601 (2020)
Digital-analog hybrid optical phase-lock loop for optical quadrature phase-shift keying
Shaowen Lu, Yu Zhou, Funan Zhu, Jianfeng Sun, Yan Yang, Ren Zhu, Shengnan Hu, Xiaoxi Zhang, Xiaolei Zhu, Xia Hou, and Weibiao Chen
Vol. 18, Issue 9, 090602 (2020)
General
Multi-technique analysis of an ancient stratified glass eye bead by OCT, μ-XRF, and μ-Raman spectroscopy
Junqing Dong, Qinghui Li, and Yongqing Hu
Vol. 18, Issue 9, 090001 (2020)
Imaging Systems
Naked-eye ghost imaging via photoelectric feedback
Gao Wang, Huaibin Zheng, Zhiguo Tang, Yuchen He, Yu Zhou, Hui Chen, Jianbin Liu, Yuan Yuan, Fuli Li, and Zhuo Xu
Vol. 18, Issue 9, 091101 (2020)
Lasers and Laser Optics
Power and spectral analyses in diode-pumped c-cut Pbnm Tm:YAP laser
Jacek Kwiatkowski
Vol. 18, Issue 9, 091401 (2020)
Experimental investigation on residual reflectance of Nd:glass amplifier edge cladding
Junjiang Hu, Liyan Zhang, Jiachuan Ni, Tao Meng, Lei Wen, Youkuo Chen, Jingping Tang, Biao Wang, Shubin Chen, Wei Chen, and Lili Hu
Vol. 18, Issue 9, 091402 (2020)
Broadband photochromic effect and photoluminescence modulation in rare-earth-doped (Pb,La)(Zr,Ti)O3 ceramics
Long Xu, Ruiqi Zhu, and Caixia Xu
Vol. 18, Issue 9, 091403 (2020)
Laser transverse modes of spherical resonators: a review [Invited] 
Y. F. Chen, C. C. Lee, C. H. Wang, and M. X. Hsieh
Vol. 18, Issue 9, 091404 (2020)
Optoelectronics
Photonic-assisted single system for microwave frequency and phase noise measurement
Jingzhan Shi, Fangzheng Zhang, De Ben, and Shilong Pan
Vol. 18, Issue 9, 092501 (2020)
Other Areas of Optics
Optical edge detection with adjustable resolution based on liquid crystal polarization gratings
Yang Yang, Xinyang Liu, Yan Wu, Ting Li, Fan Fan, Huihui Huang, and Shuangchun Wen
Vol. 18, Issue 9, 093501 (2020)
Plasmonics and Metamaterials
Plasmonic Luneburg lens and plasmonic nano-coupler
Lei Zhang, Lin Wang, Yanqing Wu, and Renzhong Tai
Vol. 18, Issue 9, 092401 (2020)
Active formatting modulation of electromagnetically induced transparency in metamaterials
Hao Sun, Yuhua Tang, Yuze Hu, Jie You, Hengzhu Liu, and Xin Zheng
Vol. 18, Issue 9, 092402 (2020)
Tunable terahertz absorber based on transparent and flexible metamaterial
Junyu Xiao, Ruiwen Xiao, Rongxuan Zhang, Zhixiong Shen, Wei Hu, Lei Wang, and Yanqing Lu
Vol. 18, Issue 9, 092403 (2020)
Ultrafast Optics
Regular uniform large-area subwavelength nanogratings fabricated by the interference of two femtosecond laser beams via cylindrical lens
Kaiqiang Cao, Long Chen, Ke Cheng, Zhenrong Sun, and Tianqing Jia
Vol. 18, Issue 9, 093201 (2020)
