本文選題：激光技術 + 光學拾音器�。� 參考：《激光技術》2017年06期

【摘要】：為了探索新型高靈敏度光電拾音器技術方案,基于光學隧穿效應研究,將聲壓變化轉換為全反射棱鏡中全反射面與擺片光學面之間的光學隧穿距離變化,從而改變光束在棱鏡全反面處的反射(透射)損耗,通過直接測量反射(透射)光的功率變化,實現拾音器基本功能。利用半導體激光器和直角全反射棱鏡搭建了一套簡易的原理驗證實驗系統,并利用該系統對三角波信號驅動進行了實驗。結果表明,反射光功率會隨著三角波信號的改變而改變,光功率改變達到5.6%;由聲音引起的玻璃振膜距離變化也可改變輸出光功率,并被檢測出來。初步驗證了該方案的可行性。
[Abstract]:In order to explore a new type of high-sensitivity photoelectric pickup, based on the study of optical tunneling effect, the change of sound pressure is converted into the change of optical tunneling distance between the total reflector and the optical surface of the pendulum in the total reflection prism. In order to change the reflection (transmission) loss of the beam at the whole opposite side of the prism, the basic function of the pickup can be realized by directly measuring the power change of the reflected (transmitted) light. A simple experimental system is built by using semiconductor laser and right angle total reflection prism. The system is used to test the driving of triangular wave signal. The results show that the reflected optical power will change with the change of the triangular wave signal, and the optical power will change to 5.6, and the change of the distance of the glass film caused by sound can also change the output optical power and be detected. The feasibility of the scheme is preliminarily verified.
【作者單位】： 國防科技大學光電科學與工程學院;
【基金】：2016年國家級大學生創(chuàng)新訓練資助項目(20169002051) 國防科技大學光電科學與工程學院2015年教育教學改革研究課題資助項目(2015XY05)
【分類號】：TN64
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本文編號：1972422