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 2.5Hz changes of eigen frequency when the resonant frequency of elastic-optic modulation system is set to be 50kHz, and the shift of frequency-temperature can not be ignored relative to the 16Hz resonant half peak width.