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Crystal growth and frequency conversion of BaMgF_4 single crystal by temperature gradient technique

机译：BaMgF_4单晶的晶体生长和频率梯度的温度梯度法

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摘要

The BaMgF_4 single crystal was grown by the temperature gradient technique. Highly pure MgF_2 and BaF_2 powders were used as raw materials and CaF_2 single crystal was chosen as a seed to induce BaMgF_4 single crystal grow along (001) orientation. The short cut-off wavelength of BaMgF_4 single crystal was determined to be 130 nm which is consistent with the previously reported result. We realized second harmonic generation from 1064 nm to 532 nm laser, and 800 nm to 400 nm femtosecond laser in single domain BaMgF_4 by using birefringent phase matching. 355-nm-wavelength laser was produced by Sum-Frequency Generation from 1064-nm- and 532-nm-wavelength laser, which is the shortest coherent radiation obtained in the UV in the BaMgF_4 crystal.
机译：通过温度梯度技术生长BaMgF_4单晶。以高纯MgF_2和BaF_2粉末为原料，选择CaF_2单晶为种子，诱导BaMgF_4单晶沿（001）取向生长。 BaMgF_4单晶的短截止波长确定为130 nm，与先前报道的结果一致。通过使用双折射相位匹配，我们在单畴BaMgF_4中实现了从1064 nm至532 nm激光以及800 nm至400 nm飞秒激光的二次谐波生成。通过Sum-Frequency Generation产生的355 nm波长激光是从1064 nm和532 nm波长的激光发出的，这是BaMgF_4晶体在UV中获得的最短的相干辐射。

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