A square-shaped flattop mode was experimentally demonstrated in a broad-area circular-aperture VCSEL using an external-cavity aspheric mirror. The mirror was fabricated by electron-beam lithography on a curved substrate. Excellent single-mode operation was observed.
Flattop mode shaping of a vertical cavity surface emitting laser using an external-cavity aspheric mirror
Conference on Lasers and Electro-Optics, 2004. (CLEO). ; 1 ; 2 pp. vol.1
2004-01-01
234822 byte
Conference paper
Electronic Resource
English
Transverse mode selection in external cavity vertical-cavity surface-emitting lasers
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