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Analysis of hybrid photonic crystal vertical cavity surface emitting lasers

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Abstract

Vertical resonators with a top mirror constituted of 1D photonic crystal membrane on top of a Bragg stack are investigated in this paper. These structures allow the fabrication of compact vertical-cavity surface-emitting lasers, which can be designed, in addition, for in-plane emission. With this hybrid approach, fabrication problems related to both classical VCSEL and Photonic Crystal lasers may be significantly relaxed, given that a full Bragg stack is replaced by a single photonic crystal membrane and that the Photonic Crystal is not formed in the active gain layer.

©2003 Optical Society of America

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Figures (6)

Fig. 1.
Fig. 1. Basic laser structure
Fig. 2.
Fig. 2. Electric field distribution (based upon TMM) at resonance for no lateral losses. In case (a), h 2=3λp /4 and in (b), h 2=2.94λp /4.
Fig. 3.
Fig. 3. Electric field in the active layer (based upon TMM) at resonance versus lateral escape time(a). Resonance lifetime as a function of lateral escape time (b).
Fig. 4.
Fig. 4. Band diagram (a) and reflectivity spectrum (b) for the designed PCM. Electric field distribution, at resonance, for the laser structure (c).
Fig. 5.
Fig. 5. Electric field spectrum at a point in the air gap (a). Electric field distribution at resonance for h 2=3λp /4(b).
Fig. 6.
Fig. 6. Electric field spectrum at a point in the air gap (a). Electric field distribution at resonance for h 2=2.94λp /4.
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