Abstract
Coherent vertical-cavity surface-emitting lasers have generated a lot of interest due to their high output power and spatial coherence.1,2 The coherence is required for applications involving beam focusing (high power InGaAs pump lasers for fiber amplification) and beam steering. We have proposed, designed, and fabricated zone lasers (Z-lasers) that use the vertical cavity geometry and that operate with both temporal and spatial coherence where the output beam automatically focuses to a spot in the far-field.
© 1993 Optical Society of America
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