Blue-Violet Four-Beam Light Source Using Waveguides

概要

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To improve the recording rate of optical disk equipment, we have been developing an optical device that can be used with a multi-beam light source by employing waveguides for visible light to align the beams at a narrow pitch. In this study, an optical device composed of eleven bent waveguides was fabricated using amorphous polymer, which is highly transparent throughout the visible region. The waveguides transmitted approximately 70% of a blue-violet beam with a wavelength of 405 nm, obtaining a maximum intensity of approximately 20 mW (continuous wave). By controlling the curvature of each waveguide, the optical device narrowed the pitch of blue-violet beams from 125 to 12 μm, acting as an optical system to reduce the pitch of beams by a factor of approximately 10. Using the optical device, a blue-violet four-beam light source with a narrow pitch of 12 μm was demonstrated.
2007-06-30