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Selective lasing in multimode periodic and non‐periodic nanopillar waveguides
Author(s) -
Zhukovsky Sergei V.,
Chigrin Dmitry N.,
Lavrinenko Andrei V.,
Kroha Johann
Publication year - 2007
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.200674508
Subject(s) - nanopillar , lasing threshold , multi mode optical fiber , materials science , optics , optoelectronics , physics , nanotechnology , optical fiber , nanostructure , wavelength
The lasing action in coupled multiple‐row periodic and fractal Cantor‐like nanopillar waveguides has been numerically investigated. It had been shown earlier [D. N. Chigrin et al., Opt. Express 12 , 617 (2004)] that such a system exhibits band splitting with distinct, straightforward and controllable supermode formation. In this paper we demonstrate that selective lasing into each of the supermodes is possible. The structure acts as a microlaser with selectable wavelength. Mode selection is achieved by means of coaxial injection seeding with a Gaussian signal with different transverse envelope. The proposed concept of switchable lasing is viewed as an alternative to conventional laser tuning by means of external cavity control. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)