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Proceedings Paper

Difference frequency modulation of multi-section dual-mode lasers with nanoscale surface gratings
Author(s): Topi Uusitalo; Heikki Virtanen; Jukka Viheriälä; Joel Salmi; Antti T. Aho; Mihail Dumitrescu
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Paper Abstract

Dual-mode multi-section quantum-well distributed feedback lasers with surface gratings have been fabricated, without regrowth, at 1310 and 1550 nm using UV nano-imprint lithography. Several laser and grating sections have been employed to control and stabilize the dual-mode emission and to reduce mode competition. Frequency differences between 15 GHz and 1 THz were achieved for different longitudinal structures. Frequency difference variations of several GHz have been measured under bias modulation with rates up to a few GHz. Higher frequency difference modulation rates are expected from improved measurement setups and from employing quantum dot active regions for further reduction of mode competition.

Paper Details

Date Published: 7 March 2016
PDF: 9 pages
Proc. SPIE 9767, Novel In-Plane Semiconductor Lasers XV, 97670S (7 March 2016); doi: 10.1117/12.2213888
Show Author Affiliations
Topi Uusitalo, Tampere Univ. of Technology (Finland)
Heikki Virtanen, Tampere Univ. of Technology (Finland)
Jukka Viheriälä, Tampere Univ. of Technology (Finland)
Joel Salmi, Tampere Univ. of Technology (Finland)
Antti T. Aho, Tampere Univ. of Technology (Finland)
Mihail Dumitrescu, Tampere Univ. of Technology (Finland)

Published in SPIE Proceedings Vol. 9767:
Novel In-Plane Semiconductor Lasers XV
Alexey A. Belyanin; Peter M. Smowton, Editor(s)

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