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1972•Soviet Journal of Quantum ElectronicsOpen access

PROPERTIES OF UNSTABLE RESONATORS WITH LARGE EQUIVALENT FRESNEL NUMBERS

V E Sherstobitov, G. N. Vinokurov

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Abstract

The results are given of numerical calculations of oscillation modes in unstable resonators. It is shown that slight smoothing of the mirror edges leads to a considerable improvement of the selective properties of a resonator. It is shown that, contrary to the predictions of the theory of unstable resonators with sharp-edged mirrors, oscillation in the lowest transverse mode described by the geometrical approximation is possible in real resonators with large equivalent Fresnel numbers.

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The results are given of numerical calculations of oscillation modes in unstable resonators. It is shown that slight smoothing of the mirror edges leads to a considerable improvement of the selective properties of a resonator. It is shown that, contrary to the predictions of the theory of unstable resonators with sharp-edged mirrors, oscillation in the lowest transverse mode described by the geometrical approximation is possible in real resonators with large equivalent Fresnel numbers.

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Available abstract

The results are given of numerical calculations of oscillation modes in unstable resonators. It is shown that slight smoothing of the mirror edges leads to a considerable improvement of the selective properties of a resonator. It is shown that, contrary to the predictions of the theory of unstable resonators with sharp-edged mirrors, oscillation in the lowest transverse mode described by the geometrical approximation is possible in real resonators with large equivalent Fresnel numbers.

Key concepts: Resonator, Fresnel number, Oscillation (cell signaling), Physics, Optics, Fresnel integral, Transverse plane, Smoothing

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PROPERTIES OF UNSTABLE RESONATORS WITH LARGE EQUIVALENT FRESNEL NUMBERS — Research Paper | ScholarLens