Dual-Beam Distributed Feedback Solid-State Dye Laser with Photoresist Grating

摘要

Organic dyes are suitable for solid-state dye laser media, and we have been studying many types of solid-state dye lasers. Distributed feedback (DFB) lasers in particular have both superior wavelength tunability and superior narrow-spectrum characteristics. In DFB lasers, gratings are key devices for tuning the laser wavelength. We have developed a method of fabricating gratings quickly and at low cost. Using this "etchless" method, we fabricated a dual-beam DFB solid-state dye laser with two-dimensional photoresist grating, and successfully achieved laser oscillation at two different wavelengths simultaneously.