Laser power meter capable of realizing shift adjustment by utilizing light filtering

Abstract

The invention provides a laser power meter capable of realizing shift adjustment by utilizing light filtering. The laser power meter comprises a driving power supply, a laser, adjustable shift opticalfilters and a sensor. The laser is connected with the driving power supply; the adjustable shift optical filters comprise at least one stage of optical filter, wherein the first stage of optical filter is arranged in the light output direction of the laser, and the later stage of optical filter is arranged in the light output direction of the previous stage of optical filter; the sensor is arranged in the light output direction of the last stage of optical filter; and transmissivity of each stage of optical filter is realized by means of optical filming. According to the laser power meter, bycarrying out optical power detection after receiving reflection attenuation of the laser through the same photoelectric sensor, measurable power range of a conventional power meter is expanded; and by selecting the shift adjustable optical filters having different multiplying power, large jump of test can be realized, corresponding measurement time is short, and test efficiency is high.

Description

technical field [0001] The invention relates to a laser power meter (Laser Power Meter, used to test the power of a continuous laser or the average power of a pulsed laser in a certain period of time) with adjustable gears, belonging to the technical field of laser detection. Background technique [0002] With the development of laser technology, lasers are widely used in communication medical, industrial manufacturing, civilian military products and other fields, and the energy detection of lasers is an important technical part in the field of laser detection technology. The energy detection of lasers corresponds to the continuous output of lasers The peak power, pulse energy, and pulse peak power. The existing laser energy meter, the common optical sensor is divided into thermal effect, photoelectric effect, photoconductive effect, etc., and the pyroelectric effect optical power meter is widely praised at present. An optical power meter is an instrument used to measure th...

AI Technical Summary

Problems solved by technology

[0007] Aiming at the problem that the measurement power range of the photoelectric power meter is relatively narrow in the prior art, the present invention provides a laser power meter that widens the power measurement range and uses light filtering to realize adjustable gears, and widens the power by performing controllable attenuation on the optical power. The measurement range makes it not only have the advantages of fast response time and high measurement accuracy of photoelectric power meters, but also have the advantages of wide measurement range of pyroelectric power meters

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