Low noise injection laser structure

Details Low noise injection laser structure Low noise injection laser structure

H - Electricity

01

S

345/32

H01S 5/10 (2006.01) H01S 5/0625 (2006.01) H01S 5/125 (2006.01)

Patent

CA 1249362

Abstract of the Disclosure The present invention pertains to an injection laser which advantageously reduces main mode output power fluctuation. The laser comprises a laser cavity having an active material joined at one end to a passive waveguide. The passive waveguide has a length which is equal to or greater than the length of the active material and an index of refraction which is substantially equal to that of the active material to prevent multicavity interference. In preferred embodiments of the present invention, the passive material is fabricated from a semiconductor material having a bandgap which is larger in energy than the energy of a photon in the laser radiation.

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