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Laser sound conducting method and device

A laser and laser technology, applied in the field of photoelectric sensing, achieves the effects of high detection sensitivity, simple structure and easy implementation

Active Publication Date: 2016-04-13
NAT UNIV OF DEFENSE TECH
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the deficiencies in the existing optical microphone solutions and devices in terms of structural complexity, functional stability, and environmental adaptability, the present invention proposes a laser acoustic transmission method and method based on laser intracavity enhancement technology and optical tunneling effect. The method and device have the characteristics of high sensitivity and strong anti-electromagnetic interference ability, and are expected to be widely used in the field of traditional microphones and other fields that require high-sensitivity sound wave measurement

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Embodiment Construction

[0026] The specific implementation manners of the present invention will be further introduced below in conjunction with the accompanying drawings.

[0027] Such as figure 1 As shown, a laser sound transmission device is mainly composed of a high reflectivity lens 1, a laser cavity 2, an optical gain medium 3, a pump source 4, a total reflection prism 5, a swing plate 6, a photodetector 7 and a signal processing circuit 8 composition. The total reflection prism 5 and the pendulum plate 6 are made of quartz glass, and the surfaces of each element are polished to be optical surfaces, wherein the total reflection prism 5 is a right-angled isosceles prism, and the pendulum plate 6 is a circular thin plate. figure 2 It is a plan view and a sectional view of Embodiment 1 of the pendulum plate.

[0028] To clearly illustrate the present invention, in conjunction with figure 1 and figure 2 Describe in detail the system structure and working process of the present invention. Suc...

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Abstract

The invention discloses a laser sound conducting method and device, belonging to the technical field of photoelectricity. The invention, based on intra-cavity laser enhancement technique and an optical tunnelling effect, provides a laser sound conducting method and device, wherein the device mainly comprises a high reflectivity mirror, a total reflection prism, a optical gain medium and a pumping source, a flexible deformation body, an photoelectric detector and a signal processing circuit. The method and the device have the advantages of high sensitivity, stable performance and strong environmental adaptability, are expected to be widely applied to the field of traditional sound conducting devices and other fields needing high-sensitivity sound wave measurement.

Description

technical field [0001] The invention belongs to the technical field of photoelectric sensing, in particular to a laser sound transmission method and device. Background technique [0002] Microphone, commonly known as microphone (English Microphone), also known as microphone, microphone, etc., is an energy conversion device that converts sound signals into electrical signals. As a common and important device, it is widely used in various important occasions that require sound wave sensing, recording and storage, such as recordings, meetings, performances, investigations, eavesdropping, etc. in daily life, scientific research and engineering. Acoustic measurement in the practical field, and underwater acoustic measurement in the military field, etc. The "shunfeng ear" in ancient Chinese myths is people's initial understanding of microphones; 2,500 years ago, my country's high-sensitivity microphone "ting urn" used in the military field appeared. Since the 20th century, micro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/08H04R23/00
CPCH01S3/08H04R23/00H04R23/008
Inventor 谭中奇
Owner NAT UNIV OF DEFENSE TECH
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