Low Threshold Two-Dimensional Annular Bragg Lasers

Details Low Threshold Two-Dimensional Annular Bragg Lasers Low Threshold Two-Dimensional Annular Bragg Lasers

2004-09-14

arxiv.org/abs/physics/0409068v1

Opt. Lett. 29, 2641(2004)

Physics

Optics

8 pages, 4 figures

Scientific paper

10.1364/OL.29.002641

Lasing at telecommunication wavelengths from annular resonators employing radial Bragg reflectors is demonstrated at room temperature under pulsed optical pumping. Sub milliwatt pump threshold levels are observed for resonators with 0.5-1.5 wavelengths wide defects of radii 7-8 mm. The quality factors of the resonator modal fields are estimated to be on the order of a few thousands. The electromagnetic field is shown to be guided by the defect. Good agreement is found between the measured and calculated spectrum.

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