Laser underwater acoustic inducing device

A laser and sound generator technology, applied in electromagnetic transmitters, ultrasonic/sonic/infrasonic transmission systems, electrical components, etc., can solve the problems of high production material cost, high price, late development of conductive fiber, etc. Drag and drop, improve conversion efficiency, simple system effect

Active Publication Date: 2017-08-11
北京华夏光谷光电科技有限公司
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Problems solved by technology

For example, there are many types of 2-micron medical conductive optical fibers, which are widely used in clinical operations such as endocrine and abdominal lithotripsy; the development of conductive optical fibers

Method used

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Embodiment Construction

[0015] The invention is an underwater laser sounder without a sound transducer. figure 2 The principle block diagram of the underwater laser sounder is given, image 3 A schematic diagram of the structure of the underwater laser sonicator is given. In the following, only 5 lasers in the laser group are taken as an example and described in detail with reference to the accompanying drawings.

[0016] The underwater sound generator is composed of a 2-3 micron laser group 1, a laser power supply 2, a fiber coupler group 3, a conductive fiber group 4, a control box 5 and a bracket 6. Among them, the 2-3 micron laser group 1 is composed of five hosts of 2.94 micron solid-state pulsed lasers. The output wavelength of each laser is 2.94 microns, the pulse energy is 0.1-5J, the repetition frequency is 1-40Hz, and the pulse width is 0.3ms. Pu way. The laser power supply 2 has the power supply capability to guarantee the simultaneous operation of 5 lasers, and the trigger frequency c...

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Abstract

The invention relates to a laser underwater acoustic inducing device. The laser underwater acoustic inducing device is characterized in that the laser energy is converted into the sound wave energy in a certain frequency range in water maximally by means of utilization of the super-strong absorption effect, on a specific laser wavelength, such as 2-3 micrometer laser, of an aqueous medium, and a specific laser pulse shape, so that an underwater laser acoustic inducing device with no requirements for coordination with other acoustic transducers can be formed, being very suitably applicable to an underwater mobile platform; the laser underwater acoustic inducing device can be formed by a plurality of single-wavelength lasers in the range of 2-3 micrometers; when the single-wavelength lasers work synchronously, underwater strong sound field signals can be generated easily; when the single-wavelength lasers work anachronously, underwater low audio frequency signals can be easily generated; through modification of the pulse energy or repeated frequency of the lasers, underwater bubbles with different sizes or different audio frequencies can be generated; and control of the transmission direction of the sound wave can be controlled through modification of the shape of the output end surface of a conduction fiber.

Description

technical field [0001] The invention belongs to the technical field of laser underwater sound generation. The device utilizes the super absorption characteristics of the water medium for the 2-3 micron laser, and through the interaction between the laser and the water medium, the laser energy is directly and efficiently converted into an acoustic signal in a certain frequency range. The underwater laser sounder matched with the underwater laser sounder is suitable for use on underwater mobile platforms. Background technique [0002] Sonar has long been the primary, if not the only, means of underwater detection / communication. In the past two decades, with the urgent need for underwater network communication and hidden acoustic target detection, some non-acoustic detection technologies and the combination of non-acoustic-acoustic detection technology have begun to receive attention. [0003] As we all know, blue-green laser detection technology has been developed since the ...

Claims

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Application Information

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IPC IPC(8): H04B10/50H04B13/02H04B11/00
CPCH04B10/50H04B11/00H04B13/02
Inventor 肖林侯晓帆韩龙其他发明人请求不公开姓名
Owner 北京华夏光谷光电科技有限公司
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