CAJ | 학술논문

采用Nicolet 550型傅里叶变换红外光谱仪,对不同世代水热法合成KTP晶体的不同品而进行了镜反射法红外光谱测试,与助熔剂法合成KTP晶体的红外光谱测试结果进行了比较,并估算了不同世代样品中羟基的浓度.测试主要针对水热法合成KTP晶体比较发育的(100)、(011)和(201)晶面,分基频区和指纹区两个区段进行.研究结果表明,水热法合成KTP晶体中OH-的伸缩振动存在明显的方向性特征,其中[100]方向吸收明显,并且其频率比助熔剂法合成KTP提高约30 cm-1.样品中的羟基浓度依世代逐代下降,羟基的存在抑制了KTP晶体的生长,提高原料纯度对于提高晶体质量有重要意义.
채용Nicolet 550형부리협변환홍외광보의,대불동세대수열법합성KTP정체적불동품이진행료경반사법홍외광보측시,여조용제법합성KTP정체적홍외광보측시결과진행료비교,병고산료불동세대양품중간기적농도.측시주요침대수열법합성KTP정체비교발육적(100)、(011)화(201)정면,분기빈구화지문구량개구단진행.연구결과표명,수열법합성KTP정체중OH-적신축진동존재명현적방향성특정,기중[100]방향흡수명현,병차기빈솔비조용제법합성KTP제고약30 cm-1.양품중적간기농도의세대축대하강,간기적존재억제료KTP정체적생장,제고원료순도대우제고정체질량유중요의의.
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.