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Mid-IR angled-grating distributed feedback (α-DFB) "W" lasers

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

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Abstract

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.

About this research paper

What this paper is about

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.

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Available abstract

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.

Key concepts: Grating, Distributed feedback laser, Schematic, Optics, Diffraction grating, Materials science, Laser, Facet (psychology)

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