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Proceedings Paper

Mode-locked VECSEL SESAM with intracavity antenna for terahertz emission
Author(s): T. Chen Sverre; A. P. Turnbull; P. C. Gow; E. Mavrona; J. R. C. Woods; C. R. Head; V. Apostolopoulos; A. C. Tropper
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Paper Abstract

Mode-locked Vertical External-Cavity Surface-Emitting Lasers (ML-VECSELs) have seen advances in pulse energy and peak power thanks to improved power handling techniques and structure designs. The significant increase in gain and intra-cavity power, coupled with the VECSEL's accessible external-cavity, has made the addition of intra-cavity elements for frequency conversion possible even for lossy conversion mechanisms. In this paper, we report a gold-patterned Semiconductor Saturable Absorbing Mirror (SESAM) that functions both as a slow saturable absorber in a ML-VECSEL and as an intracavity strip line Photo-Conductive Antenna (PCA) for THz emission. Here we describe the design of the strip emitter, THz-Time Domain Spectroscopy (TDS) performed with a ML-Yb fibre laser and the mode-locked characterisation of a ML-VECSEL built with the patterned SESAM.

Paper Details

Date Published: 22 February 2017
PDF: 7 pages
Proc. SPIE 10087, Vertical External Cavity Surface Emitting Lasers (VECSELs) VII, 100870O (22 February 2017); doi: 10.1117/12.2252346
Show Author Affiliations
T. Chen Sverre, Univ. of Southampton (United Kingdom)
A. P. Turnbull, Univ. of Southampton (United Kingdom)
P. C. Gow, Univ. of Southampton (United Kingdom)
E. Mavrona, Univ. of Southampton (United Kingdom)
J. R. C. Woods, Univ. of Southampton (United Kingdom)
C. R. Head, Univ. of Southampton (United Kingdom)
V. Apostolopoulos, Univ. of Southampton (United Kingdom)
A. C. Tropper, Univ. of Southampton (United Kingdom)

Published in SPIE Proceedings Vol. 10087:
Vertical External Cavity Surface Emitting Lasers (VECSELs) VII
Michael Jetter, Editor(s)

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