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Chin. Opt. Lett.
Research Highlights
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Three-dimensional imaging lidar system based on high speed pseudorandom modulation and photon counting

High speed pseudorandom modulation and photon counting techniques are applied to a three-dimensional imaging lidar system. The specific structure and working principle of the lidar system is described. The actual detector efficiency of a single-photon detector in an imaging system is discussed, and the result shows that a variety of reasons lead to the decrease in detection efficiency. A series of...
Prototype of solar ground layer adaptive optics at the 1-m New Vacuum Solar Telescope

A prototype of a solar ground-layer adaptive optics (GLAO) system, which consists of a multi-direction correlating Shack–Hartmann wavefront sensor with 30 effective subapertures and about a 1 arcmin field of view (FoV) in each subaperture, a deformable mirror with 151 actuators conjugated to the telescope entrance pupil, and a custom-built real-time controller based on field-programmable gate arra...
Actively Q-switched ring Tm-doped fiber laser with free space structure

We report a cladding-pumped actively Q-switched ring Tm-doped fiber laser (TDFL). This laser is Q-switched by a free space acousto-optic modulator. A pulse energy up to 150 μJ with a pulse width of 207 ns at a repetition rate of 100 Hz is achieved for a cavity optical length of 6.68 m. The pulse amplitude’s stability at this repetition rate is better than 95%. To the best of our knowledge, this is...
Long-term in vivo monitoring of injury induced brain regeneration of the adult zebrafish by using spectral domain optical coherence tomography

Brain regenerative studies require precise visualization of the morphological structures. However, few imaging methods can effectively detect the adult zebrafish brain in real time with high resolution and good penetration depth. Long-term in vivo monitoring of brain injuries and brain regeneration on adult zebrafish is achieved in this study by using 1325 nm spectral-domain optical coherence tomo...
Announcements
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COL Cover Story: Three-dimensional imaging lidar system based on high speed pseudorandom modulation and photon counting [21/11/2016]

Laser radar technologyhas been developed rapidly since the advent of laser. Among various laser radars,the three-dimensional (3D) imaging lidar has been of great concern. Thetraditional 3D imaging radar based on direct detection mode...
Special Issue Announcement: Optical Methods for Life Sciences [10/11/2016]

Chinese Optics Letters (COL) invites original manuscript submissions for a Special Issue on Optical Methods for Life Sciences to be published in September 2017. This issue will focus on the cutting-edge optical techniques and its app...
COL Cover Story: Prototype of solar ground layer adaptive optics at the 1-m New Vacuum Solar Telescope [09/10/2016]

Adaptive optics (AO) is an indispensable technique in ground-based solar imaging which provides diffraction limited resolution. However, the traditional AO technique has only a very small corrected field of view (FoV) (~ 10 arcsec), ...
Chinese Optics Letters New Executive Editor-in-Chief Announcement [23/09/2016]

Chinese Laser Press is privileged to announce the appointment of new Executive Editor-in-Chief David Hagan for one subordinate journal of its publications,Chinese Optics Letters (COL). Dr. Hagan is Professor of Optics a...
COL Cover Story: Actively Q-switched ring Tm-doped fiber laser with free space structure [18/09/2016]

  Measurement accuracy is one of the most important indexes to estimate the capability of LIDAR systems. For Doppler LIDAR, the emission source with a proper long pulse width is beneficial to measurement accuracy. The pulse width is ...
Special Issue for the 50th Anniversary of the Invention of Optical Fiber Communications [02/08/2016]

In 1966, while working at Standard Telephones and Cables, Dr. Charles K. Kao and his co-author published the foundational paper on optical fiber communication - "Dielectric-fibre surface waveguides for optical frequencies",...
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