Naoya NAKAI and Makoto FUKUDA

Department of Applied Photonics System Technology, Chitose Institute of Science and Technology, 758-65 Bibi, Chitose, Hokkaido 066-8655, Japan

(Received September 1, 2008; Accepted December 13, 2008)

We fabricated distributed-feedback (DFB) solid-state dye lasers with moiré gratings. We formed a moiré grating pattern by superimposing two grating patterns with a rotation angle. The moiré gratings were fabricated by an “etchless” process utilizing a two-beam interference method. The gratings were coated with solidified rhodamine-B. The five laser devices were pumped with the second harmonic generation of a Nd:YAG laser and we obtained narrow-banded laser oscillations at 590, 600, 610, 620, and 630 nm wavelength. Full widths at half maximum of laser spectra were less than 0.5 nm. The results indicated that a moiré fringe can function as a resonator of DFB solid-state dye lasers.

Key words: moiré, two-beam interference, grating, solid-state dye laser, DFB laser