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Chin. Opt. Lett.
Research Highlights
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Maglev rotating disk laser

We propose and demonstrate a laser-diode-pumped, maglev rotating Nd:YAG disk laser. The disk of the laser crystal is attached to a maglev pyrolytic graphite disk and is rotated by compressed gas. In this rotating disk laser, the detrimental thermal effects are alleviated and the laser can be operated in the single transverse electromagnetic (TEM)00 mode with high brightness. In our proof-of-concep...
Optical design for Antarctic Bright Star Survey Telescope

  The exoplanet search is one of the most exciting research fields in astrophysics. The Antarctic Bright Star Survey Telescope (BSST), capable of continuous exoplanet observation on polar nights, is a Ritchey–Chretien telescope with a three-lens field corrector, and has a 300mm aperture, 2.76 focal ratio, and a wavelength coverage ranging from 0.36 to 1.014μm. Equipped with a 4k×4k and 12μm/pixel ...
Silver hierarchical structures grown on microstructured silicon in chip for microfluidic integrated catalyst and SERS detector

In this Letter, silver (Ag) hierarchical nanostructures grown on black silicon (BS) are used as the catalyst and a surface-enhanced Raman scattering (SERS) detector integrated in a microfluid. The BS is fabricated via femtosecond laser ablation in an atmosphere of sulfur hexafluoride, and then hydrogenated with hydrofluoric acid. As formed, the BS substrate directly acts as a reducing template to ...
Origin of potential errors in the quantitative determination of terahertz optical properties in time-domain terahertz spectroscopy

We demonstrate theoretically and experimentally how changes of a terahertz (THz) beam induced by the sample affect the accuracy of the determination of THz dielectric properties in THz time-domain transmission spectroscopy (TDTS). We apply a Gaussian beam and the ABCD matrix formalism to describe the propagation of the THz beam in a focused beam setup. The insertion of the sample induces a focus d...
Announcements
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COL Cover Story: The laser performs aerial ballet — Rotary disk laser with optically driven maglev motion [28/12/2015]

  The thermal load accumulated in the gain medium induces thermal lensing which results in thermal aberration to the laser cavity, which would degrade the performance of solid state lasers. When the gain medium is rotated, the heat a...
COL Cover Story: Optical design for Antarctic Bright Star Survey Telescope [11/12/2015]

Dome A, the summit of Antarctic Plateau, has been supposed to be one of the most inaccessible parts of the continent where the elevation height is 4091 m, and the average temperature of the year is about -56 ℃. In January 2005, the C...
COL Cover Story: Fabrication of microfluidic chip with high efficiency catalytic and detection function [21/10/2015]

  Microfluidic chips hold great potential for the application in the area of biological and chemical research, by integrating all the basic operations (chemical reaction, selection, separation, and detection) in a stamp size chip. It...
COL Cover story: Focus Displacement Correction in Focused Beam Terahertz Time-Domain Spectroscopy [15/09/2015]

  Terahertz time-domain spectroscopy (THz-TDS) is becoming the standard method for the characterization of novel materials e.g. for photovoltaics or in sensing and security. Since THz-TDS is capable of measuring an electro-magnetic f...
COL Cover story: 20 Mbit/s wireless communication demonstration using terahertz quantum devices [29/07/2015]

  Terahertz communication (0.1~10 THz) has attracted much attention due to the high carrier frequency and large bandwidth over 100 Gbps. At present, most of the research work is focused on the frequency of 100 ~ 600 GHz, some has mad...
Call for Papers: Joint Feature Issues on Digital Holography and 3-D Imaging in Applied Optics and Chinese Optics Letters [22/07/2015]

Call for Papers: Joint Feature Issues on Digital Holography and 3-D Imaging in Applied Optics and Chinese Optics Letters Submission Opens: 1 August 2015 Submission Deadline: 1 September 2015   The OS...
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