Abstract

This paper discusses the self-modulation regimes of a multiloop cavity with external optical action initiated by the reflection of the laser beam’s focused radiation from the laser target plasma created by it. The self-modulation regime does not have a distinct threshold character. It is found that an intense Q-switching regime is characterized by the presence of a mode-locking regime. It is demonstrated that the self-Q-switching regime of a loop cavity can be used to automatically identify substances by the method of laser-spark emission spectroscopy.

© 2017 Optical Society of America

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