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Chin. Opt. Lett.
Research Highlights                                                                [+More]
Temperature and metal composition dependence of lateral photovoltaic effect in Al-Alq3/SiO2/Si structures

A series of Alx-(Alq3)1?x granular films is prepared on Si wafer with native oxide layer using co-evaporation
technique. Large lateral photovoltaic effect (LPE) is observed, with an optimal LPV sensitivity of 75
mV/mm in x = 0.35 sample. The dependence of LPE on temperature and Al composition is investigated,
and the possible mechanism is discussed.
Dark blue Cerenkov second harmonic generation in the two-layer-stacked hexagonal periodically poled MgO: LiNbO3s

We report the dark blue nonlinear ˇCerenkov radiation by the second harmonic generation (SHG) in a two-layer-stacked hexagonal periodically-poled-MgO: LiNbO3s (PPMgOLNs). Based on the direct wafer bonding of two target PPMgOLNs rotating around the axis perpendicular to the plane with an angle of 30?, twelve bright spots as twice of those in a single PPMgOLN are shown at each second-harmonic ˇC ...
Frequency locking of a 399-nm laser referenced to fluorescence spectrum of an ytterbium atomic beam

The laser cooling of ytterbium (Yb) atoms needs a 399-nm laser which operates on the strong 1S0 ?1P1 transition and can be locked at the desired frequencies for different Yb isotopes. We demonstrate a frequency locking method using the fluorescence spectrum of an Yb atomic beam as a frequency reference. For unresolved fluorescence peaks, we make the spectrum of the even isotopes vanish by using...
Graphene Q-switched 0.9-μm Nd:La0.11Y0.89VO4 laser

Graphene saturable absorber (SA) is used as the passive Q-switcher of a 0.9-μm solid-state laser. When the laser medium is a Nd:La0.11Y0.89VO4 crystal, the initial transmittance of the graphene SA is 78%; at an absorbed pump power of 7.62 W, the maximum average output power, largest pulse energy, and minimum pulse width are 0.62 W, 2.58 μJ, and 84 ns, respectively. This study shows that graphen...
Announcements                                [+More]
Call for Papers: Optical 3D display and imaging Focus issue in Chinese Optics Letters [18/10/2013]

Call for Papers: Optical 3D display and imaging Focus issue in Chinese Optics Letters Guest Editors Yunlong Sheng, Laval University (Canada) Byoungho Lee, Seoul National University (Korea) Yongtian Wang, Beijing Institute of Te...
COL Cover Story: Compact triplexer based on silicon nanowire waveguides [19/04/2013]

The researchers, led by Prof. Fuwan Gan, from Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, designed a compact triplexer based on silicon nanowire waveguides. Because of the high index con...
COL Cover Story: SiON based high-resolution spectrometer-on-a-chip [19/04/2013]

The researchers, led by Prof. Jianjun He, from Zhejiang University in China, chose SiON as waveguide core layer material to obtain high index contrast, and combined the high performance spectral analysis function of echelle diffrac...
COL Cover Story:Surface plasmon polariton enhances silicon light emission [19/04/2013]

Professor Yidong HUANG’s group from Tsinghua University, China, has recently reported experimental results of enhanced spontaneous emission (SE) from silicon nanoparticles embedded in silicon nitride, which verified the feasibility o...
COL Cover Story:Physics of natural laser in air and other gases [19/04/2013]

In environmental science, it is desirable to generate coherent light sources with different frequencies at a designated position in air, especially for measuring atmospheric trace species and monitoring global warming and stratospher...
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