IEEE Photonics Technology Letters · 1991 · 31 citations · 11 references
Natural SciencesElectrical EngineeringMaterials ScienceOpticsOptoelectronicsPhotonicsIntegrated OpticsLaser OpticsLaser PhysicsOptical ResonatorsOptical SourcesSemiconductor LasersCurrentsDistributed Feedback LasersLaser OscillationLaser ThresholdLow-threshold Current LasersMetalorganic Vapor Phase EpitaxyQuantum Cascade LasersThreshold Behavior
A low-threshold continuous-wave (CW)-operable gain-coupled distributed-feedback laser with a corrugated active layer was realized with InGaAsP/InP materials by implementing active ion etching and organometallic vapor-phase epitaxy. Without any phase-shifting structures, the devices exhibited excellent single-longitudinal-mode oscillation, independent of facet reflection. Threshold currents as low as 12 mA and side-mode suppression ratios as high as 55 dB were demonstrated at a wavelength of 1.55 mu m.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
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Purely gain-coupled distributed feedback semiconductor lasers
Y. Luo, Yoshiaki Nakano, Kazuya Tada et al. · Applied Physics Letters · 1990 · 106 citations