Patent ID: 7577178
Filing Date: 2009-08-18
Classification: H01S

Abstract:
1. A narrow-linewidth injection seeded Q-switched fiber ring laser, comprising: a ring formed of a single-clad Er-doped optical fiber having a core, an acoustic layer, and a pure silica cladding, the core, the acoustic layer, and the pure silica cladding structured such that an L two isolators operatively coupled to the optical fiber to effect unidirectional laser operation; a wavelength division multiplexer operatively coupled to the ring, the wavelength division multiplexer coupling pump light into the ring; a coupler operatively coupled to the ring, the coupler having a first arm that is a laser output, the coupler forming part of the ring, and a second input arm into which seed power is launched; and a Q-switch operatively coupled to the ring.