The laser measurement and control system is mainly composed of three subsystems: laser parameter measurement, laser optical path automatic collimation, and laser master control room. It is an important part of the high-power laser driver. Almost all the performance indicators and important data of the high-power laser driver work are provided by the laser pointer measurement and control system online.
Laser parameter measurement system
The laser parameter measurement system is a system specifically responsible for laser driver parameter acquisition and measurement. It mainly consists of three measurement branches, namely the energy measurement of the laser beam, the spatial distribution measurement of the laser beam, and the time measurement of the laser beam. The data of these three measuring units is the most important data of a laser system. It is not only an important basis for evaluating the working status, device capabilities and level of a high-power laser device, but also provides essential physical data for experiments.
Laser energy measurement is one of the most basic units in laser parameter measurement. Accurate measurement of target laser energy is of great significance to the analysis and processing of experimental data. Laser energy measurement research is divided into four parts:
Development of high-sensitivity, high-performance body absorption green laser pointer energy meter; development of high-precision and high-stability enlarged display data acquisition instrument; selection of laser energy measurement sampling method and measures to improve measurement accuracy; data analysis of laser energy measurement deal with.
In the research of laser energy measurement, the development of laser energy meter (card) is the key. The principle of the laser energy meter is to irradiate the measured laser beam onto a high-sensitivity absorber and convert it into heat energy, and then measure it through circuit design.
Because the measured high-power laser is in the order of nanoseconds, the time that the red laser pointer acts on the absorber is very short, and the energy is very small, so the development of the laser energy meter is a very difficult research project. After decades of painstaking research, measurement and research personnel have developed a variety of models and specifications of laser energy meters, which have been tested and calibrated by the Chinese Academy of Metrology. They exceed the original design indicators in terms of sensitivity, uniformity, and stability, and meet or exceed the United States. The level of the same type of laser energy meter manufactured by Apollo Lasers.