A Control System of Narrow Pulse Width Laser Micro Peak Power Density Tester

Abstract

The invention discloses a control system of a narrow pulse width laser micro-peak power density tester. The system includes laser wavelength setting, detector component responsivity display, power calculation, pulse width test, pulse waveform display and other functions, and at the same time integrates the measurement Auxiliary functions such as mode selection, automatic setting, running pause, large and small signal switching, matching resistance switching, memory control, voltage and time setting, and port setting. The laser micro-power pulse test device based on this software can realize the test of weak laser peak power density and pulse width. The wavelength setting range is 400-1100nm and 800-1700nm, and the test range of laser micro-peak power is 1μW / cm2-2.54mW / cm2, the pulse width test range is 10ns~∞. The invention has the characteristics of humanized display interface and friendly operation interface, strong operability, high reliability and the like.

Description

technical field [0001] The invention relates to the technical field of laser measurement, in particular to a control system for a narrow pulse width laser micro-peak power density tester. Background technique [0002] In recent years, with the development of laser technology and the broadening of laser application fields, laser guidance, laser ranging, laser communication and laser remote sensing and other products have come out, the ns-level pulse width and peak power density of long-distance transmission and target diffuse reflection in μW / cm 2 Research on the characteristics and detection technology of weak laser signals with narrow pulses has been paid more and more attention. [0003] At present, for the measurement of weak laser signals, Chinese patents (CN200910089555, CN200910089556.1, CN201010606030.9) have announced a laser micro-energy meter using a convex-convex-concave structure and an optical system with a diameter of 252 mm or more. The minimum can achieve 1....

AI Technical Summary

Problems solved by technology

[0003] At present, for the measurement of weak laser signals, Chinese patents (CN200910089555, CN200910089556.1, CN201010606030.9) have announced a laser micro-energy meter using a convex-convex-concave structure and an optical system with a diameter of 252mm or more. The minimum can achieve 1.96 fJ / cm 2 signal detection, but the system has a huge optical system and adjustment mechanism, which cannot realize the convenient measurement of outdoor and field signals, let alone the measurement of 10ns-level pulse width and frequency information

[0004] Internationally, the existing laser power meter test range can reach the pw level, which was developed by American Thermoelectric Company, but it can only test continuous and quasi-continuous signals, and cannot detect low-frequency narrow pulse width signals, let alone narrow pulse width. test

Not suitable for the detection of signals such as laser range finder, guidance, communication and remote sensing

Images