COMPONENTS OF LASER SYSTEMS AND PROCESSES OCCURRING IN THEM: Natural amplitude fluctuations in a ring He-Ne laser under phase resonance conditions
An experimental investigation was made of the spectra of natural amplitude fluctuations of counterpropagating (opposite) waves in a ring He–Ne laser under phase resonance conditions. The form of the spectrum was then qualitatively different from the spectrum obtained in the standing-wave regime. A theoretical analysis provided a satisfactory explanation of the characteristics of the observed spectra.