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Proceedings Paper

Feedback enhancement in lasers with organic gain material
Author(s): Rik Harbers; Patric Strasser; Rainer F. Mahrt; Daniel Erni; Werner Baechthold; Bert J. Offrein; Ullrich Scherf
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Paper Abstract

The mode coupling of organic distributed feedback lasers is enhanced by using a distributed feedback grating that is etched into a thin layer of titanium dioxide (TiO2). The use of TiO2 increases the index contrast in the grating and the confinement in the waveguide. The enhanced mode coupling results in larger feedback given to the lasing modes, which lowers the laser threshold and allows smaller devices to be built. The lasing threshold of the TiO2-enhanced devices is twice as low as that of conventional devices whose grating is etched directly into the quartz.

Paper Details

Date Published: 7 July 2005
PDF: 5 pages
Proc. SPIE 5840, Photonic Materials, Devices, and Applications, (7 July 2005); doi: 10.1117/12.608662
Show Author Affiliations
Rik Harbers, Swiss Federal Institute of Technology (Switzerland)
IBM Research (Switzerland)
Patric Strasser, Swiss Federal Institute of Technology (Switzerland)
Rainer F. Mahrt, IBM Research (Switzerland)
Daniel Erni, Swiss Federal Institute of Technology (Switzerland)
Werner Baechthold, Swiss Federal Institute of Technology (Switzerland)
Bert J. Offrein, IBM Research (Switzerland)
Ullrich Scherf, Bergische Univ. Wuppertal (Germany)


Published in SPIE Proceedings Vol. 5840:
Photonic Materials, Devices, and Applications
Goncal Badenes; Derek Abbott; Ali Serpenguzel, Editor(s)

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