Grating-based far field modifications of ring quantum cascade lasers | Zendy

Rolf Szedlak | Zendy; Clemens Schwarzer | Zendy; Tobias Zederbauer | Zendy; Hermann Detz | Zendy; A. M. Andrews | Zendy; W. Schrenk | Zendy; G. Strasser | Zendy

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Grating-based far field modifications of ring quantum cascade lasers

Author(s) -

Rolf Szedlak,

Clemens Schwarzer,

Tobias Zederbauer,

Hermann Detz,

A. M. Andrews,

W. Schrenk,

G. Strasser

Publication year - 2014

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.22.015829

Subject(s) - grating , optics , cascade , blazed grating , physics , diffraction grating , laser , quantum cascade laser , beam (structure) , near and far field , optoelectronics , chemistry , chromatography

We present methods for beam modifications of ring quantum cascade lasers emitting around λ = 9μm, which are based on novel distributed feedback grating designs. This includes the creation of a rotationally symmetric far field with a central intensity maximum using an off-center grating as well as the generation of partial radially polarized emission beams induced by a rotation of the grating slits.

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