Abstract

A unique, double ended, external cavity semiconductor laser which incorporates a large-area amplifier has been successfully stabilized into a single transverse mode over a large region. Transverse mode stabilization was achieved by using the combination of a mode-selecting mirror (MSM) for one of the reflectors and an adjustable aperture adjacent to the output mirror. The large-area laser described above achieves single transverse mode operation by utilizing the selective reflecting properties of a MSM to provide significant feedback for only the desired fundamental mode. The variable aperture adjacent to the output mirror is adjusted to further enhance mode separation.

© 1994 Optical Society of America