Angle-tuning based acousto-optic adjustable filter device

Abstract

The invention discloses an angle-tuning based acousto-optic adjustable filter device. The angle-tuning based acousto-optic adjustable filter device includes a computer control and analysis system, and a light source, a light beam collimation system, an acousto-optic filter system and a spectrum detection system which are successively arranged; the acousto-optic filter system and the spectrum detection system are connected to the computer control and analysis system; a light beam from the light source successively passes through the light beam collimation system and the acousto-optic filter system, and reaches the spectrum detection system; acquisition, analysis and storage of spectrum information is performed under the control of the computer control and analysis system, a complete light path connection is formed, and spectrum data acquisition and analysis is completed by the computer control and analysis system in an acousto-optic filtering process. Flexible adjustable acousto-optic adjustable filtering can be achieved by accurately controlling the angle of the acousto-optic filter; and the filter device is good in the filtering stability, is low in device cost, is easy to operate, and can be used in various application places.

Description

technical field [0001] The invention relates to the field of acousto-optic filtering, in particular to an angle-tuned acousto-optic tunable filtering device. Background technique [0002] Specific spectral information from the target object can be extracted by using the optical filtering method. This technology is widely used in the fields of military affairs, agriculture, criminal investigation, life science and geological exploration. The filtering of signal light can be achieved by using gratings, prisms and bandpass filters, but they all have their own shortcomings and shortcomings, such as high cost of gratings, harsh environmental requirements, inconvenient maintenance, and high application costs; The principle of dispersion is adopted, so the filtered signal spectrum is continuously distributed, and it is not easy to extract specific spectral components; once the central wavelength of the bandpass filter is determined, it cannot be adjusted, and adjustable filtering c...

AI Technical Summary

Problems solved by technology

However, due to the need for continuously adjustable output frequency and high precision of the RF source, the cost is high, which limits its wide application

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