Nonlinear Optics
Broadband second-harmonic generation in thin-film lithium niobate microdisk via cyclic quasi-phase matching
Jiefu Zhu, Tingting Ding, Xuerui Sun, Fengchao Ni, Hao Li, Shijie Liu, Yuanlin Zheng, and Xianfeng Chen
Chinese Optics Letters
  • Mar. 25, 2024
  • Vol. 22, Issue 3 (2024)
Optical Materials
Saturable absorption and visible pulse modulation of few-layer topological nodal-line semimetal HfGeTe
Qiming Zhao, Shouyan Zhang, Shuxian Wang, Gang Wang, Haohai Yu, and Huaijin Zhang
Chinese Optics Letters
  • Mar. 25, 2024
  • Vol. 22, Issue 3 (2024)
Lasers, Optical Amplifiers, and Laser Optics
Stable ultraviolet ultrafast laser based on all-polarization-maintaining fiber femtosecond laser
Hao Tian, Zhe Zhu, Wei Lin, Zihao Li, Junpeng Wen, Hao Xiu, Yiheng Fan, Chiyi Wei, Xiaoming Wei, and Zhongmin Yang
Chinese Optics Letters
  • Mar. 25, 2024
  • Vol. 22, Issue 3 (2024)
Integrated Optics
Microwave photonic sideband selector based on thin-film lithium niobate platform
Yuedi Ding, Chenglin Shang, Wenqi Yu, Xiang Ma, Shaobo Li, Cheng Zeng, and Jinsong Xia
Chinese Optics Letters
  • Mar. 25, 2024
  • Vol. 22, Issue 3 (2024)
Imaging Systems and Image Processing
Measurable speckle gradation Hadamard single-pixel imaging
Liyu Zhou, Yanfeng Bai, Qin Fu, Xiaohui Zhu, Xianwei Huang, Xuanpengfan Zou, and Xiquan Fu
Chinese Optics Letters
  • Mar. 25, 2024
  • Vol. 22, Issue 3 (2024)
On the Cover
Ultrashort ultra-intense lasers (within duration in femtosecond scale) serve for not only the exploration of scientific unknowns related to extreme states of matter, but also the establishment of scientific facilities to support strategic high-tech such as inertial confinement fusion. However, the wavelength range of ultrashort ultra-intense lasers is restricted to the near-infrared (typically 800 nm and 1053 nm) by the available laser media. Nonlinear frequency conversion based on nonlinear optical crystals has been widely used in order to generate laser frequencies that are not available by direct laser action. The efficiency of nonlinear frequency conversion depends on the fulfillment of phase-matching condition.
Chinese Optics Letters
  • Mar. 25, 2024
  • Vol. 22, Issue 1 (2024)
On the Cover
Chirality is a kind of symmetrical structure that exists in nature. A substance has chirality if its mirror image cannot overlap with itself through basic rotations and translations. It is closely related to the phenomenon of life: more than 60% of drugs and 25% of pesticides are chiral compounds. Chiral characteristics significantly affect the function of biochemical substances, chiral isomers have the same chemical composition but may have completely different physical and chemical properties and biological activities, and even a chiral molecule has a therapeutic effect on diseases, while its isomers are toxic. Therefore, accurate and efficient detection of biochemical substances, especially the identification and quantitative analysis of chiral biochemical substances, has practical application needs and crucial scientific significance.
Chinese Optics Letters
  • Mar. 25, 2024
  • Vol. 21, Issue 11 (2024)
Editors' Picks
Edge detection is one of the common data processing methods and can resolve core problems in the field of machine vision, which has a wide range of applications in object detection, image segmentation, data compression, microscopic imaging, and object suggestion generation. Edges can be extracted by the spatial differentiator (SD) and reflect the key information in the image more efficiently. In the biomedical field, intensity changes of phase objects such as biological tissues and cells are usually weak. To more clearly and directly reflect the morphological boundary and structural characteristics of phase objects, it is of great significance to develop edge detection technologies for phase objects.
Chinese Optics Letters
  • Mar. 21, 2024
  • Vol. 22, Issue 1 (2024)
Editors' Picks
Nitrogen-vacancy (NV) centers, typical luminescent point defects in diamond with excellent spin properties, have been widely used to characterize physical quantities such as magnetic field, electric field, and temperature, which not only provide scientists with a new tool for exploring and understanding physical phenomena but also open up a new path for the development of quantum sensing technology. Significant progress has been made in quantum sensing platforms based on NV centers in recent years. In medicine, this technology offers the possibility of non-destructive and non-invasive bio-imaging and diagnostics. Geologists use NV centers to probe the physical properties of the Earth's interior, NV centers provide new means for geological exploration and resource exploitation. In industrial inspection, NV centers-based sensors also provide more accurate measurements for product quality control and process optimization. With further research and technological development, NV centers-based quantum sensing platforms will play an even more important role in the future, opening the door to a deeper understanding of the natural world.
Chinese Optics Letters
  • Mar. 20, 2024
  • Vol. 21, Issue 11 (2024)