Abstract
Semiconductor ring lasers are of interest for monolithic cleave-free integration, single longitudinal mode, low threshold, controlled unidirectional operation.1–4 There have been a number of reports on various types of semiconductor ring lasers with different output coupling structures which determine the coupling efficiency and the degree of the disturbance of the ring resonator modes. In this talk, a square ring laser using a narrow groove as a output coupler is described.
© 1994 Optical Society of America
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