Applied Physics Letters · 1994 · 57 citations · 7 references
Short Wavelength OpticEngineeringLaser ScienceGain SectionLaser PhysicsOptical MetrologyLaser ApplicationsTunable Dual-wavelength OperationLaser MaterialDiode ArrayHigh-power LasersSpectral SeparationOptical PropertiesExternal Grating-loaded CavityGuided-wave OpticPhotonic Integrated CircuitOptical SystemsPhotonicsGratingsSimultaneous GenerationPhotonic DeviceElectro-optics DeviceWavelength TuningApplied PhysicsTunable LasersOptoelectronicsDiffractive Optic
A novel grazing-incidence grating cavity has been developed for simultaneous generation of laser output at two wavelengths. The gain section is a commercial laser diode array. By moving vertically with respect to the optical axis V-shaped double slit at the end mirror, we demonstrate tuning of the spectral separation of the dual-wavelength laser output from 3.52 to 11.29 nm. The side-mode suppression ratio is 10–20 dB. Examination of the far-field patterns reveal that the laser mode at the two wavelengths corresponds to a different order of the array modes.
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