Abstract
We present the design and experimental characterization of nanostructured laser mirrors aimed at suppressing spatial hole burning (SHB) of a standing wave resonator. The dielectric Bragg mirrors were made by GLancing Angle Physical Vapor Deposition. Two designs are presented. First, helically-nanostructured materials that produce circular Bragg resonance at the wavelength matching the helical period. Second, thick anisotropic coatings deposited on ordinary mirrors, which act as half-wave plates to produce twisted mode laser operation. Both designs enable single longitudinal mode laser operation by suppressing SHB.
© 2018 The Author(s)
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