焦電検出器のネオジムガラスレーザー信号応答

概要

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The response wave-forms of the triglycine sulfate detector with the operational amplifier are examined by applying the irradiation of the neodymium glass laser. The risetime and decaytime of the pyroelectric response in case of the glass laser are respectively 6 times, 32 times shorter than those previously reported for herium-neon laser. The voltage responsivity of the detector increases with the increase of the thickness of the detector and/or the load resistor of operational amplifier. The risetime and the decaytime does not depend on the value of the loaded resistor. The risetime reduces as the thickness of the detector diminishes. But, the decaytime is minimized when the thickness of the detector is suitable. It is suggested that the shorter risetime can be obtained by using metal electrode. The risetime of the detector using metal electrodes is 5 to 10 times shorter than that of the detector coated with carbon paste. The interface of the detector and the metal electrode has an important effect because the risetime is shorter when the surface layer of the triglycine sulfate is melted with heat.
明治大学の論文