A general method of producing multielement amplifiers having a single output beam is described. The basic building blocks for these are either Michelson interferometers or Mach–Zehnder interferometers modified by the inclusion of gain in at least one arm of the interferometer. Demonstration of these multielement interferometric power amplifiers using broad-area AlGaAs gain elements and a single-mode AlGaAs master oscillator is described.
© 1989 Optical Society of America
Original Manuscript: August 25, 1988
Manuscript Accepted: October 11, 1988
Published: January 1, 1989
John R. Andrews, "Interferometric power amplifiers," Opt. Lett. 14, 33-35 (1989)