A laser energy compensation system and compensation method thereof

Abstract

The invention relates to a laser energy compensation system and a compensation method thereof. The laser energy compensation system includes a laser, a thermal resistor, a data acquisition and processing circuit, a single-chip microcomputer, an isolation filter, a laser power supply, and a pre-ignition signal circuit. Electrically connected, and the data acquisition and processing circuit is connected to the single-chip microcomputer, the single-chip microcomputer is connected to the laser power supply after the isolation filter, and the laser power supply is directly connected to the laser, and the data collection and processing circuit, the single-chip microcomputer and the isolation filter are all integrated in the same circuit On the board, the circuit board is connected to the laser power supply through the pre-ignition success signal circuit. The invention fully considers the characteristics of the energy change of the lamp pump laser in the high and low temperature environment and the few seconds before discharge, compensates the laser output energy, can shield the strong interference of the pre-combustion signal of the laser power supply, and greatly improves the stability of the laser energy at various temperatures sex.

Description

A laser energy compensation system and compensation method thereof technical field The invention belongs to laser energy control technology, and relates to a laser energy compensation system and a compensation method thereof. Background technique In the application of lasers, there are often high requirements for the stability of the output energy, but at different temperatures, the output energy of the laser is different, and it takes 3-5 seconds from discharge to energy stability. The energy curve is non-linear. Some systems require the laser to emit the first pulse, and the energy is close to a stable value, so higher requirements are placed on energy compensation. Most of the energy compensation technologies introduced in relevant literature are energy compensation for semiconductor lasers, which adjust the output energy by changing the current injection. Most of them use photodiodes as detection methods, but in high and low temperature environments, the accuracy of...

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Problems solved by technology

Most of them use photodiodes as detection methods, but in high and low temperature environments, the accuracy of photodiodes will change; digital potentiometers are also used to adjust the control amount, but the adjustment range is limited, non-linear, and the resolution is poor

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