Open AccessThe given paper focuses on the investigation in time of the properties of a pulsed CVL AM using CVLS of the type DO – SFC –PA and mistiming method in wide limits (± 1000 ns) of a DO light radiation pulse relatively to PA light pulse from the moment of maximal amplification.
It was stated that CVL AM in relation to its own radiation has got four characteristic time zones following each other and repeating from pulse to pulse: weak absorption 30-50 ns in length (appears at the initial stage of pulse pump current development), amplification 20-40 ns in length (appears at the sharp leading edge of the current pulse), complete absorption over 1000 ns in length (appears at the pulse current cut and follows the pulse) and maximal transparency over 1000 ns in length (before the new current pulse).
These AM properties have become the basis for developing methods and electron devices of operational control of power and radiation pulse repetition frequency (PRF), including packet and pulse-to-pulse modulation according to preset algorithm in industrial CVLs and CVLSs of new generation. Based on such class of CVLs and CVLSs a set of up-to-date automated laser technological installations (ALTI) “Karavella” with computerized control: “Karavella-1”, “Karavella-1M”, “Karavella-2”, “Karavella-2M” were created for precision microprocessing of materials for electron engineering products (EEP) 0.02 – 2 mm thick.
The capability of ALTI “Karavella” to operate in the modes of high speed control over the laser radiation parameters allows to increase significantly the operational control over technological processes of manufacturing precision parts, to increase the productivity of material microprocessing, to make cuts and holes with minimal roughness and zone of thermal influence.
The main conclusions made in the given paper on the results of experimental investigations of CVL AM time properties are also true for lasers on self-contained transitions of other atoms of metals and chemical agents.