Abstract
The quasi phase-matched second-harmonic generation (SHG), sum-frequency generation (SFG), and optical parametric oscillator (OPO) wavelengths in the visible and IR regions were measured at a crystal temperature of 20℃ by using the periodically poled 5mol% MgO doped congruent LiNbO3 crystals (Λ=29.0 and 28.96μm). The high-accuracy extraordinary Sellmeier equation, which reproduces the quasi phase-matching properties in the 0.39μm~4.95μm range is presented.
© 2013 IEICE
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