Lasers and photo-detectors

Details Lasers and photo-detectors Lasers and photo-detectors

H - Electricity

01

S

345/17

H01S 5/12 (2006.01) H01L 27/00 (2006.01) H01S 3/02 (2006.01) H01L 33/00 (2006.01)

Patent

CA 1076237

ABSTRACT A semi-conductor light source comprising a single piece of semi-conductor material having formed therein a semi-conductor laser and a semi-conductor optical detector. The semi-conductor laser having a first optical output port, a second optical output port, and a resonant cavity arranged so that in use light is emitted simultaneously through the first and second optical output ports. The semi-conductor laser also includes a pair of reflecting surfaces at right angles to one another which couple an optical output from said first optical output port into said detector.

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