1997•Optics LettersRequires access

Speckle-mirror laser

Paulo C. de Oliveira, John McGreevy, N. M. Lawandy

Abstract

We report on a new laser feedback mechanism that uses speckle-pattern phenomena to create highly dispersive feedback. This speckle mirror is capable of creating laser emission as narrow as that from laser cavities using a number of dispersive elements such as gratings and prisms. Contributions from the peaks of intensity of the speckle patterns and a limited pumping-beam diameter are the basic conditions for the observation of this effect.

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Key concepts: Speckle pattern, Optics, Laser, Laser beams, Speckle noise, Distributed feedback laser, Materials science, Physics