TITLE

Characterization of line-defect-waveguide lasers in two-dimensional photonic-crystal slabs

AUTHOR(S)
Sugitatsu, Atushi; Asano, Takashi; Noda, Susumu
PUB. DATE
June 2004
SOURCE
Applied Physics Letters;6/28/2004, Vol. 84 Issue 26, p5395
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Here we investigate a line-defect-waveguide laser in a two-dimensional photonic-crystal slab. The change δλ in lasing wavelength for a change δW in waveguide width is found to be extremely large: δλ/δW = 2. It is two orders of magnitude greater than that for a conventional distributed-feedback laser. An investigation of the electromagnetic-field distribution at the waveguide-mode edge is made, giving an indication of the cavity-mode structure for lasing oscillation. Fourier transform analysis reveals that the extremely large tenability originates from the ‘zigzag’ mode behavior of the line-defect waveguide in the photonic crystal, due to two-dimensional distributed feedback and reflection.
ACCESSION #
13495685

 

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