Effects of Intermixing on Gain and Alpha Factors of Quantum-Dash Lasers
Gain and alpha factors were measured on InAs-InAlGaAs quantum-dash lasers with their heterostructures intermixed by either a dielectric-capping or ion-implantation technique. The laser intermixed by the dielectric-capping technique exhibits a blue shift as much as 93 nm without degrading the laser q...
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Veröffentlicht in: | IEEE photonics technology letters 2008-10, Vol.20 (19), p.1654-1656 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | Gain and alpha factors were measured on InAs-InAlGaAs quantum-dash lasers with their heterostructures intermixed by either a dielectric-capping or ion-implantation technique. The laser intermixed by the dielectric-capping technique exhibits a blue shift as much as 93 nm without degrading the laser quality. In comparison, the laser intermixed by the ion-implantation technique has a larger shift but lower differential gain and higher alpha factor. The result implies that quantum-dash lasers of different wavelengths can be effectively integrated on the same chip by the dielectric-capping intermixing technique. |
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ISSN: | 1041-1135 1941-0174 |
DOI: | 10.1109/LPT.2008.2002747 |