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首页> 外文期刊>Optics Letters >Broadband-signal wavelength converter with high damage resistance
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Broadband-signal wavelength converter with high damage resistance

机译：具有高抗损伤性的宽带信号波长转换器

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摘要

Uniform MgO-doped near-stoichiometric LiNbO_(3) was successfully grown from Li-rich melts by a melt supplying technique. Periodically poled domains were demonstrated in MgO-doped near-stoichiometric LiNbO_(3) wafers. Efficient quasi-phase-matched difference frequency generation was achieved in a titanium-diffusion waveguide based on periodically poled MgO-doped near-stoichiometric LiNbO_(3). The conversion efficiency was -7.3 dB with a pump power of 150 mW and a signal power of 50 mW at room temperature. It was found that the 3 dB signal conversion bandwidth was as large as 78 nm. Photorefractive damage of the device was examined by pump-probe second-harmonic generation at room temperature, and the device exhibited no significant wavelength shift.
机译：通过熔体供给技术成功地从富含锂的熔体中生长出均匀掺杂MgO的近化学计量LiNbO_（3）。在掺MgO的近化学计量LiNbO_（3）晶圆中证实了周期性极化的畴。在基于定期极化的MgO掺杂的近化学计量LiNbO_（3）的钛扩散波导中，实现了高效的准相位匹配差分频率生成。在室温下，泵浦功率为150 mW，信号功率为50 mW，转换效率为-7.3 dB。发现3dB信号转换带宽高达78nm。通过在室温下泵浦探针二次谐波的产生来检查器件的光折变损伤，并且该器件没有表现出明显的波长偏移。

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