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Mid-IR angled-grating distributed feedback (/spl alpha/-DFB) "W" lasers

By: Bewley, W.W.; Bartolo, R.E.; Turner, G.W.; Manfra, M.J.; Martinelli, R.U.; Vurgaftman, I.; Lee, H.; Yang, M.-J.; Meyer, J.R.; Jurkovic, M.J.; Felix, C.L.;

2000 / IEEE / 0-7803-5947-X

Description

This item was taken from the IEEE Conference ' Mid-IR angled-grating distributed feedback (/spl alpha/-DFB) "W" lasers ' In order to significantly improve the beam quality for wide pump stripes, we have fabricated and tested the first mid-IR angled-grating distributed feedback (a-DFB) lasers. A schematic of the /spl alpha/-DFB geometry is shown alongside the conventional Fabry-Perot configuration. Both the diffraction grating and the gain stripe are tilted at an angle (chosen to be 16") with respect to the facet normals.