Abstract
The paper presents the results of study of single-pass amplified radiation distribution of copper bromide vapor laser active elements used in high-speed laser monitors. The possibility of modifying the profile of a single-pass amplified light beam by changing the copper bromide vapor concentration is demonstrated. This means of influence on the radiation profile seems to be easiest due to implementation by varying only one parameter of operation. Gaussian, ring-shaped or flat profiles can be achieved depending on the temperature of the containers with copper bromide. The diameter of the beam becomes narrower when increasing the concentration of copper bromide vapor. This feature is characteristic of the discharge tubes as small (diameter 2.5, length 5 cm) and large (diameter 5 cm, length 90 cm) active volume.
Highlights
Laser monitor based on active media of copper vapor laser or copper bromide vapor laser is one of the effective instruments for the diagnostics of processes accompanied by intensive shielding background light [1,2,3,4,5,6,7,8,9,10,11,12]
In the paper [11] a construction of laser monitor based on an active medium of CuBr laser is represented and visualization results obtained by the laser monitor for some objects are given
The study showed that increasing temperature of containers with CuBr powder, i.e. growing CuBr concentration in the active medium, leads to considerable contraction of the output beam profile of CuBr brightness amplifiers
Summary
Laser monitor based on active media of copper vapor laser or copper bromide vapor laser is one of the effective instruments for the diagnostics of processes accompanied by intensive shielding background light [1,2,3,4,5,6,7,8,9,10,11,12]. There are a number of papers devoted to the application of such active media for imaging various objects but researching towards the development of practical laser monitors is carried out insufficiently. In the work [12] one of these lasers was applied for objects visualization under conditions of intensive background lighting. In the paper [11] a construction of laser monitor based on an active medium of CuBr laser is represented and visualization results obtained by the laser monitor for some objects are given. The main element of the laser monitor scheme is an active element of brightness amplifier
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