Abstract
Semiconductor lasers are usually designed so that only the fundamental transverse mode of the multilayered structure is above cutoff. Some exceptions are twin-waveguide (TG) lasers, which can be designed to lase on either one or both transverse modes1-3 and broad- waveguide (BW) lasers, which are designed to lase on the fundamental transverse mode but can lase on two transverse modes.
© 2000 Optical Society of America
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