POLYMERIC WAVEGUIDE COMPONENTS FOR THZ QUANTUM CASCADE LASER OUTCOUPLING

被引：1

作者：

Castellano, F. ^{[1
]}

Beere, H. ^{[2
]}

Ritchie, D. ^{[2
]}

Vitiello, M. S. ^{[1
]}

机构：

[1] CNR, Ist Nanosci, NEST, Piazza San Silvestro 12, I-56127 Pisa, Italy

[2] Univ Cambridge, Cavendish Lab, Cambridge CB2 1TN, England

来源：

TERAHERTZ, RF, MILLIMETER, AND SUBMILLIMETER-WAVE TECHNOLOGY AND APPLICATIONS VII | 2014年 / 8985卷

关键词：

terahertz; optical fiber; cyclic-olefin-copolymer; quantum cascade laser; TERAHERTZ; EMISSION;

D O I：

10.1117/12.2041219

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We study the use of polymeric components to achieve efficient outcoupling of radiation from double-metal-waveguide THz quantum cascade lasers. We employ cyclic-olefin-copolymer to realize optical fibers with diameters between 60 mm and 1000 mm, and characterize their absorption coefficient at 2.9THz. We show that assembling a fiber on the facet of a single-plasmon 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 double-metal quantum cascade laser waveguide into the tapered end of a metal coated optical fiber.

引用

页数：6

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