We present a method for the coherent coupling of single-mode fiber lasers that produces a single Gaussian output beam. The output and the spectral properties of an experimental device composed of three coupled Nd3+ single-mode fiber lasers have been studied. For different coupling conditions, typically 70% of the total output power has been produced in a single beam. The dynamic behavior of the emission spectrum is discussed.
© 1993 Optical Society of America
Original Manuscript: March 16, 1993
Published: September 15, 1993
Jacques Morel, Alain Woodtli, and René Dändliker, "Coherent coupling of an array of Nd3+-doped single-mode fiber lasers by use of an intracavity phase grating," Opt. Lett. 18, 1520-1522 (1993)