Supported by the National Natural Science Foundation of China under Grant Nos 11074156, 61378010 and 61121064, the TYAL, and the National Basic Research Program of China under Grant No 2010CB923101.
We demonstrate a high-efficiency green light conversion from an external cavity second harmonic generation with a MgO-doped periodically poled LiNb03 crystal. The frequency doubler can reach a conversion efficiency of...
Supported by the National Basic Research Development Program of China under Grant No.61363;the National Science Foundation of China under Grant Nos.50932002 and 51102284;the Shandong Provincial Natural Science Foundation under Grant No.ZR2010AQ017.
Epitaxial LiNbO_(3)(LNO)films are grown on n−type GaN semiconductor substrates,forming LNO/GaN p-n junctions.The current-voltage(I–V)and capacitance−voltage(C–V)characteristics of the junctions are studied.The I–V ...
The structure of a strip LiNbO3 waveguide clad with a planar LiNbOa waveguide is proposed to fabricate a long-period waveguide grating (LPWG). It is shown theoretically that an LPWG device based on such a special Li...
Supported by the National Natural Science Foundation of China under Grant No 10735070. We would like to thank Professor Ke-Ming Wang at Shandong University for helpful discussion. We also thank Dr Hong-Ji Ma and Rui Nie at Peking University for their help in ion implantation.
The refractive index profiles of 3 MeV O^2+ ion-implanted planar waveguides in lithium niobate are reconstructed based on etching and ellipsometry techniques. SRIM2003 code is used to simulate the damage distribution...
Supported by the National Natural Science Foundation of China under Grant Nos 60490280, 60621063 and 60308001. We gratefully acknowledge HC Photonics Co. for providing excellent PPLN crystal. We thank NIE Yu- Xin and HAN Hai-Nian for helpful discussions.
We report a femtosecond optical parametric oscillator based on MgO-doped PPLN synchronously pumped by a mode-locked Ti:sapphire laser. The wavelengths of the signal and idler are continuously tuned from 1100 to 1300h...
Supported by the National Natural Science Foundation of China under Grant No 60578019, the Research Fund for Changjiang Scholars, and Innovative Research Team in University of China
We investigate the influence of visible light on domain inversion in Mg-doped near stoichiometric lithium niobate crystals and find that the switching electric field decreases about 70% above a threshold light intensi...
Supported by the National Natural Science Foundation of China under Grant No 60177016, and the Fore-Research of Basic Research Project of China under Grant No 2002CCA03500.
A laser beam at wavelength 647nm is focused on a sample of 5mol% MgO-doped lithium niobate crystal for domain inversion by a conventional external electric field. In this case, a reduction of 36% in the electric field...
Supported by the National Natural Science Foundation of China under Grant No 10390160.
Terahertz time-domaln spectroscopy (THz-TDS) is used to study the spectral response of lithium niobate crystals (LiNbO3) in the far infrared region. The optical constants are derived from the measured complex refr...
Supported by the Important Pre-research Project of the Ministry of Science and Technology of China under Grant No 2002CCA03500, and the National Natural Science Foundation of China under Grant No 60177016.
In LiNbO3:Fe, anomalous behaviour of grating erasure is observed with different wavelengths, i.e. rapid grating erasure in the short wavelength range, which deviates from the results predicted by the electron transpo...