Abstract

We have invented a quasi-Gaussian profile-transmittance filter based on radially varying the phase retardation in a birefringent element. The radial birefringent element has been applied to resonator design and has demonstrated its usefulness in generating an improved resonator spatial-mode profile.

© 1980 Optical Society of America

Radial intensity filters using radial birefringent elements

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Low-magnification unstable resonators used with ruby and alexandrite lasers

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Vector modes of lasers with radially birefringent elements

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