Abstract

We report a high-intensity nano-aperture vertical-cavity surface-emitting laser (VCSEL) utilizing a bowtie-shaped aperture. A maximum power of 188μW is achieved from a 180nm bowtie aperture at a wavelength of 970nm. The near-field full width at half-maximum intensity spot size 20nm away from the bowtie aperture is 64nm×66nm from simulation, and the peak near-field intensity is estimated to be as high as 47mWμm2. This intensity is high enough to realize near-field optical recording, and the small spot size corresponds to storage densities up to 150Gbitsin2. The bowtie-aperture VCSEL also enables other applications, such as compact high-intensity probes for ultrahigh-resolution near-field imaging and single molecule fluorescence and spectroscopy.

© 2007 Optical Society of America

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