Summary form only given. Recently, we have reported novel lasers based on two-dimensional (2D) photonic crystals or 2D periodic structures. Due to the two-dimensionality of such devices, the Bragg diffraction that occurs is multi-directional. Such multi-directional Bragg diffraction can yield coupling mechanisms unattainable using traditional DFB lasers, leading to control of the lasing mode over a large 2D area, which may have various important applications such as high-power lasers or surface-emitting lasers with very narrow divergence angles. We created such a device with a 2D photonic crystal in which we integrated two wafers (A and B) using a wafer-fusion technique. Wafer A has an InGaAsP/InP multiple quantum well active layer (/spl lambda/= 1.3 /spl mu/m) grown on a p-type InP substrate. Wafer B features a square lattice structure on an n-type InP substrate. We have found that the polarization of the laser can be controlled by unit cell structure design.
Photonic crystal lasers and related functional devices
The 15th Annual Meeting of the IEEE Lasers and Electro-Optics Society ; 1 ; 217-218 vol.1
2002-01-01
149924 byte
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
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