Fabrication of a Highly Efficient Quasi-phase-match Device for Blue-Violet Second-Harmonic Generation.
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We present a method for controlling the shape of the domain-inverted structure in an off-cut MgO: LiNbO<SUB>3</SUB> crystal utilizing two-dimensional high-voltage application. Using this technique, a periodically domain-inverted structure with a period of 3.2 Jim and thickness of 2.0 μm was fabricated over a 10-mminteraction length. This structure has made possible sufficient overlaps between propagation modes and domain inversion in the waveguide. Using this structure, we demonstrated a cw blue-violet second-harmonic generation of 17.3 mW at the wavelength of 426 nm with a single pass of 55 mW of cw AlGaAs laser diode input, which corresponded to a 31 % power conversion efficiency.
- 社団法人 レーザー学会の論文
社団法人 レーザー学会 | 論文
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