Abstract
The paper discusses the perspectives of application of a long pulse CuBr vapor oscillator for laser monitors. The influence of excitation conditions of the copper bromide vapor laser on the lasing pulse duration is discussed. It is revealed that increased pulse duration of lasing up to 200 ns and more is observed in unstable mode of the discharge. Laser monitors based on the long lasing pulse CuBr vapor oscillators can be demanded for distant objects monitoring.
Highlights
A number of non-destructive testing tasks need visualization of processes shielded by intensive background lighting
To use the active element of a laser as a brightness amplifier in a laser monitor the laser beam profile should be characterized as uniform as possible distribution
Laser pulse duration of 100 ns is sufficient for visualizing objects situated in a distance of 15 m from the brightness amplifier by a laser monitor
Summary
A number of non-destructive testing tasks need visualization of processes shielded by intensive background lighting. Such processes occur in interaction areas of a matter and powerful flow of energy (laser material processing, film deposition in a discharge, irradiation of biological tissues by a concentrated flow of energy, surface modification by exposure of electron beams), self-propagating high-temperature syntheses, discharge plasmas etc. After that the reflected from the object radiation is amplified and projected onto a screen or the sensor of a digital CCD-camera. This type of a laser monitor scheme is widely used and called monostatic [3]
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