G
Gang Chen
Researcher at Chongqing University
Publications - 86
Citations - 1137
Gang Chen is an academic researcher from Chongqing University. The author has contributed to research in topics: Lens (optics) & Diffraction. The author has an hindex of 15, co-authored 74 publications receiving 750 citations. Previous affiliations of Gang Chen include Stevens Institute of Technology.
Papers
More filters
Journal ArticleDOI
Optically induced fast wavelength modulation in a quantum cascade laser
Gang Chen,Rainer Martini,Seong-Wook Park,Clyde G. Bethea,I.-Chun A. Chen,P. D. Grant,R. Dudek,Hang Liu +7 more
TL;DR: In this article, an optically induced fast wavelength shift was demonstrated in a standard middle infrared (MIR) quantum cascade laser by illuminating the front facet with a femtosecond (fs) near infrared (NIR) laser, allowing fast optical frequency modulation (FM) for free space optical communication (FSOC) and FM spectroscopy.
Journal ArticleDOI
Generation of a sub-diffraction hollow ring by shaping an azimuthally polarized wave.
Gang Chen,Zhixiang Wu,Anping Yu,Zhihai Zhang,Zhongquan Wen,Kun Zhang,Luru Dai,Senlin Jiang,Yuyan Li,Li Chen,Changtao Wang,Xiangang Luo +11 more
TL;DR: A planar sub-diffraction diffractive lens is proposed, which has an ultra-long focal length of 600 λ and small numerical aperture of 0.64, and a sub- diffraction hollow ring is experimentally created by shaping an azimuthally polarized wave.
Journal ArticleDOI
Sub-wavelength tight-focusing of terahertz waves by polarization-independent high-numerical-aperture dielectric metalens.
Hao Chen,Zhixiang Wu,Zeyu Li,Luo Zhenfei,Xue Jiang,Zhongquan Wen,Li-Guo Zhu,Xun Zhou,Hua Li,Zhengguo Shang,Zhihai Zhang,Kun Zhang,Gaofeng Liang,Senlin Jiang,Du Lianghui,Gang Chen +15 more
TL;DR: To achieve high-NA and polarization-free operation, a polarization-independent dielectric metasurface with a sub-wavelength period of 0.4λ is proposed that has potential applications in THz imaging, spectroscopy, information processing, and communications, among others.
Journal ArticleDOI
Planar binary-phase lens for super-oscillatory optical hollow needles.
Gang Chen,Zhixiang Wu,Anping Yu,Kun Zhang,Jing Wu,Luru Dai,Zhongquan Wen,Yinghu He,Zhihai Zhang,Senlin Jiang,Changtao Wang,Xiangang Luo +11 more
TL;DR: Numerical simulation reveals a good penetrability of the proposed optical hollow needle at an air-water interface, where the needle propagates through water with a doubled propagation distance and without loss of its super-oscillatory property.