Distributed feedback-like laser emission in photonic crystal waveguides on InP substrate

Lasing of triangular and square lattice photonic crystal, waveguides on InP substrate is investigated around the 1.5-/spl mu/m wavelength by optical pumping. The lattice period of the fabricated structures is varied over a very large scale, thereby allowing a detailed exploration of the laser behavi...

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Bibliographic Details
Published in:IEEE journal of selected topics in quantum electronics 2005-09, Vol.11 (5), p.1180-1186
Main Authors: Checoury, X., Boucaud, P., Lourtioz, J.-M., Pommereau, F., Cuisin, C., Derouin, E., Drisse, O., Legouezigou, L., Legouezigou, O.L., Lelarge, F., Poingt, F., Guang-Hua Duan, Bonnefont, S., Mulin, D., Valentin, J., Gauthier-Lafaye, O., Lozes-Dupuy, F., Talneau, A.
Format: Article
Language:English
Subjects:
Behavior
Distributed feedback devices
Emission
Indium phosphide
Indium phosphides
Laser feedback
Laser modes
Lasers
Lattices
Optical pumping
Optical waveguides
Photonic crystal (PhC)
Photonic crystals
plane wave method
Plane waves
Pump lasers
semiconductor laser
Spreads
waveguide
Waveguide lasers
Waveguides
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Summary:Lasing of triangular and square lattice photonic crystal, waveguides on InP substrate is investigated around the 1.5-/spl mu/m wavelength by optical pumping. The lattice period of the fabricated structures is varied over a very large scale, thereby allowing a detailed exploration of the laser behaviors in the cases of micrometer width waveguides. A genuine distributed feedback (DFB) laser emission is observed in the gap for W2-3 waveguides in the /spl Gamma/M direction of a triangular lattice. A different behavior is obtained for W3 waveguides in the /spl Gamma/K direction of the same lattice as well as for W1 and W3 waveguides in the /spl Gamma/X direction of a square lattice. The laser emission is found to occur at the /spl Gamma/ point of the Brillouin zone (wavevector k=0) when the emission frequency is outside the gap. The DFB-like laser emission is intrinsically single mode in this case. Plane wave calculations show that the field distributions of the two DFB components are radically different. The emitting mode is well localized in the guide core while the non-lasing mode spreads over the whole crystal.
ISSN:1077-260X
1558-4542
DOI:10.1109/JSTQE.2005.853751