Polymeric waveguide components for THz quantum cascade laser outcoupling

F. Castellano; H. Beere; D. Ritchie; M. S. Vitiello

doi:10.1117/12.2041219

7 March 2014 Polymeric waveguide components for THz quantum cascade laser outcoupling

F. Castellano, H. Beere, D. Ritchie, M. S. Vitiello

Proceedings Volume 8985, Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications VII; 89851F (2014) https://doi.org/10.1117/12.2041219
Event: SPIE OPTO, 2014, San Francisco, California, United States

Abstract

We study the use of polymeric components to achieve efficient outcoupling of radiation from double-metal-waveguide THz quantum cascade lasers. We employ cyclicolefincopolymer to realize optical fibers with diameters between 60mm and 1000mm, and characterize their absorption coefficient at 2.9THz. We show that assembling a fiber on the facet of a singleplasmon quantum cascade laser improves its far field radiation pattern, making it narrower. We also provide a design of a broadband directional coupler that can be used to couple radiation from a doublemetal quantum cascade laser waveguide into the tapered end of a metal coated optical fiber.

Citation Download Citation

F. Castellano, H. Beere, D. Ritchie, and M. S. Vitiello "Polymeric waveguide components for THz quantum cascade laser outcoupling", Proc. SPIE 8985, Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications VII, 89851F (7 March 2014); https://doi.org/10.1117/12.2041219

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