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Proceedings Paper

Dual-comb MIXSEL
Author(s): S. M. Link; C. A. Zaugg; Alexander Klenner; M. Mangold; M. Golling; B. W. Tilma; U. Keller
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Paper Abstract

We present a single semiconductor disk laser simultaneously emitting two different gigahertz modelocked pulse trains. A birefringent crystal inside a modelocked integrated external-cavity surface-emitting laser (MIXSEL) separates the cavity beam into two spatially separated beams with perpendicular polarizations on the MIXSEL chip. This MIXSEL then generates two orthogonally polarized collinear modelocked pulse trains from one simple straight cavity. Superimposing the beams on a photo detector creates a microwave beat signal, representing a strikingly simple setup to down-convert the terahertz optical frequencies into the electronically accessible microwave regime. This makes the dual-comb MIXSEL scheme an ultra-compact and cost-efficient candidate for dual-comb spectroscopy applications.

Paper Details

Date Published: 4 March 2015
PDF: 7 pages
Proc. SPIE 9349, Vertical External Cavity Surface Emitting Lasers (VECSELs) V, 93490Q (4 March 2015); doi: 10.1117/12.2078010
Show Author Affiliations
S. M. Link, ETH Zürich (Switzerland)
C. A. Zaugg, ETH Zürich (Switzerland)
Alexander Klenner, ETH Zürich (Switzerland)
M. Mangold, ETH Zürich (Switzerland)
M. Golling, ETH Zürich (Switzerland)
B. W. Tilma, ETH Zürich (Switzerland)
U. Keller, ETH Zürich (Switzerland)

Published in SPIE Proceedings Vol. 9349:
Vertical External Cavity Surface Emitting Lasers (VECSELs) V
Mircea Guina, Editor(s)

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