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Chin. Opt. Lett.
Research Highlights
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Ultranarrow bandwidth tunable atomic filter via quantum interference-induced polarization rotation in Rb vapor

We report the experimental demonstration of an ultranarrow bandwidth atomic filter by optically induced polarization rotation in multilevel electromagnetically induced transparency systems in hot Rb vapor. With a coupling intensity of 2.3 W/cm2, the filter shows a peak transmission of 33.2% and a bandwidth of 10 MHz. By altering the coupling frequency, a broad tuning range of several Doppler linew...
Down-looking synthetic aperture imaging ladar demonstrator and its experiments over 1.2 km outdoor

We present a down-looking synthetic aperture imaging ladar demonstrator and its experiments over 1.2 km in the field. The achieved imaging resolution is in agreement with the theoretical design, and the resulting two-dimensional image is satisfied. The capability to eliminate the influence from atmospheric turbulence is fully proven by the experiments.       &nbs...
Ultranarrow bandwidth nonlinear Faraday optical filter at rubidium D2 transition

  We demonstrate a narrowband optical filter which operates on the 52S1/2 to 52P3/2 transition at 780 nm in rubidium vapor based on optical-pumping-induced dichroism combined with Faraday anomalous dispersion effects. Its peak transmission is 18.4(2)% at the 52S1/2, F = 2 to 52P3/2, F ' = 1, 3 crossover transition, whereas at the 52S1/2, F = 2 to 52P3/2, F ' = 2, 3 crossover transition the transmi...
Optical microfiber phase modulator directly driven with low-power light

An optical microfiber phase modulator (OMPM) directly driven with low-power light is presented. Phase modulation response of OMPM is theoretically analyzed. A 10-mm optical microfiber (OM), tapered from conventional single-mode fiber, is inserted in one arm of a Michelson fiber interferometer. To drive the OMPM, 980-nm wavelength light with sinusoidal intensity modulation is injected into the inte...
Announcements
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Call for Papers for the 10th National Conference on Laser Technology and Optoelectronics and the High-End Forum on Chinese Optoelectronic Industry and Technology [19/12/2014]

The 10th NationalConference on Laser Technology and Optoelectronics and the High-End Forum on ChineseOptoelectronic Industry and Technology will be held by the Chinese Laser Press duringMarch 14th-18th, 2015. The Laser World of Photo...
Some changes in the COL template [09/12/2014]

Some changes in the COL template have been made (MS Word), and according to the new template: 1. The pages of your manuscript must be formatted using a two-column layout, and have a limit of five printed pages; 2. When you upload ...
COL cover story: New atomic filter with bandwidth close to the atomic natural linewidth [01/12/2014]

  Unltranarrow bandwidth optical filters can be used to efficiently suppress the background light noise while extracting the weak signal. The atomic filtering method has been proved to be one of the most effective ways to realize unl...
COL cover story: Down-Looking Synthetic Aperture Imaging Ladar(SAIL) Overcomes Atmospheric Interference [27/10/2014]

  A synthetic aperture imaging ladar (SAIL) can provide two-dimensional active imaging of centimeter-class resolution at a long range, thus this field of research attracts much attention recently. SAILs usually work in a side-looking...
COL cover story: A New Ultranarrow Bandwidth Atomic Optical Filter Applied in Faraday Active Optical Clock [28/09/2014]

Faraday atomic optical filter is widely used in many fields, such as free space optical communication, lidar, laser frequency stabilization and atomic optical clock. Researchers aim to realize a filter with high transmission, narrow ...
COL cover story: Optical microfiber phase modulator directly driven with low-power light [25/08/2014]

Optical phase modulator is an important component in optical systems.But at present most optical phase modulators based on electro-optic effect,thermo-optic effect or elastic-optic effect are driven by electrical signal andnot suitab...
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