摘要
分析了(xyt)φ1切型长度伸缩振动模式下硒化锌晶体谐振器的频率温度特性。推导了温度与硒化锌晶体的密度、杨氏模量和膨胀等材料性质的关系,计算了硒化锌晶体的频率温度系数。结果表明,相对于硒化锌的一级频率温度系数而言,硒化锌的高级频率温度系数可以忽略。弹光调制系统工作时所产生的热量会引起温度变化,从而导致谐振频率改变。当弹光调制系统工作在50kHz的谐振频率位置时,硒化锌晶体温度每改变1℃,晶体本征频率改变2.5Hz,相对于弹光调制系统16Hz的谐振半峰宽而言,该频率温度漂移不可忽略。
The frequency-temperature characteristics of zinc selenide （ZnSe） resonator were investigated under the condition of （xyt）φ1-cut of the length of stretching modes. The relationship of temperature with the properties of ZnSe crystal such as density, Young＇s modulus and expansion was deduced and its frequency-temperature coefficient was calculated. The results show that the ZnSe higher order frequency-temperature coefficient can be negligible with respect to its first order frequency-temperature coefficient. The temperature changes with the heat caused by elastic-optic modulation system, thus the resonant frequency changes. One degree change of the temperature of ZnSe crystal induces 2.5 Hz changes of eigen frequency when the resonant frequency of elastic-optic modulation system is set to be 50 kHz, and the shift of frequency- temperature can not be ignored relative to the 16 Hz resonant half peak width.
出处
《半导体光电》
CAS
CSCD
北大核心
2012年第3期390-392,425,共4页
Semiconductor Optoelectronics
基金
国家自然基金专项基金项目(61127015)
国家自然科学基金项目(61040062)
科技部国际科技合作项目
山西省国际科技合作项目(2010081038)
关键词
硒化锌
频率温度特性
频率温度系数
本征频率
弹光调制系统
zinc selenide
frequency-temperature characteristics
frequency temperaturecoefficient
eigen frequency
elastic-optic modulation system
