title: Fiber laser with combined feedback of core and cladding modes assisted by an intracavity long-period grating.
abstract: We present a fiber laser made in a single piece of conventional doped-core fiber that operates by combined feedback of the fundamental core mode LP((0,1)) and the high-order cladding mode LP((0,10)). The laser is an all-fiber structure that uses two fiber Bragg gratings and a long-period grating to select the modes circulating in the cavity; the laser emits at the coupling wavelength between the core mode LP((0,1)) and the counterpropagating cladding mode LP((0,10)) in the Bragg gratings. This work demonstrates the feasibility of high-order mode fiber lasers assisted by long-period gratings.
authors: Department of Applied Physics and Electromagnetism, University of Valencia, Dr. Moliner 50, Burjassot 46100, Spain.
authors: D
authors: D
authors: Sáez-Rodriguez
authors: J L
authors: JL
authors: Cruz
authors: A
authors: A
authors: Díez
authors: M V
authors: MV
authors: Andrés