| 光谱学与光谱分析 |
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| The IR Spectroscopic Study of Hydrothermal Synthetic KTP |
| XIE Hao1, PEI Jing-cheng1*，QI Li-jian2, ZHONG Zeng-qiu1 |
1. Faculty of Earth Sciences of China University of Geosciences, Wuhan 430074, China
2. Marine Geology National Key Laboratory of Tongji University, Shanghai 200092, China |
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Abstract In the present paper, different-generation hydrothermally grown KTP crystals were tested by the Nicolet 550 type FIR spectrometer with the reflective technique. They were studied on different crystal faces. Since the hydrothermally grown KTP crystal usually grows (100), (011) and (201) crystal faces, these faces were tested in different-generation products, and they were tested by two spectral wave bands, 2 000-4 000 and 400-2 000 cm-1. The figures were compared with the flux-melt grown KTP crystal. In addition, making reference to the method of calculation about the consistence of OH- in quartz, the consistence of OH- in different -generation hydrothermally grown KTP crystals was estimated. In the hydrothermal grown KTP crystals, the stretching vibration of OH- shows distinct directivity characteristic. The absorption at [100] direction is obvious and the frequency is about 30 cm-1 higher than the flux-melt grown KTP. Each new generation weakened the consistency of OH-, which restrained the growth of the KTP crystal. Accordingly, increasing the purity of rough materials plays a very important role in improving the quality of the crystals.
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Received: 2009-03-02
Accepted: 2009-06-06
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Corresponding Authors:
PEI Jing-cheng
E-mail: leonpei_74@163.com
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