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制成了新的互补畴结构热释电探测器,这种新结构探测器能使振动噪声和周围环境温度变化引起的干扰比一般结构的探测器降低一个数量级。由于采用了离子束研磨技术,己制成了2—5微米厚的自支撑钽酸锂探测器。用这种互补畴结构制备的探测器(约1平方厘米的灵敏面积),在10赫下所测得的D~*为1.9×10~9厘米·赫(?)·瓦~(-1),当振动加速度高达0.1g、带宽为1赫时,测得D~*值的下降不到25%。
Made a new complementary domain structure pyroelectric detector, the new structure of the detector so that noise and ambient temperature changes caused by interference than the general structure of the detector to reduce an order of magnitude. Due to the ion beam milling technique, self-supporting lithium tantalate detectors ranging from 2 to 5 microns have been made. The detector (about 1 cm2 of the sensitive area) prepared using this complementary domain structure has a D * of 1.9 × 10 9 cm · Hz · W -1 measured at 10 Hz, , When the vibration acceleration up to 0.1g, the bandwidth of 1 Hz, the measured value of D ~ * decreased less than 25%.