MgO:LiNbO3 crystal is widely used for high power freqency doubling(SHG), mixing(SFG) and optical parmeter oscillator(OPO). MgO:LiNbO3 has similar effetive nonlinear coeffcients as pure LiNbO3. But it has the advntages such as high damage threshold (over 5 GW/cm2 @ 1064 nm, 12ns), noncrtical phase matching (NCPM) at room temperature, excellent E-O and NLO properties, good mechanical and chemical properties compared with pure LiNbO3.

Its Sellmeier equations (7 mol% MgO doping) are:
no2 = 4.8762+0.115540/(l2-0.04674)-0.033119l2 (l in mm)
ne2 = 4.5469+0.094779/(l2-0.04439)-0.026721l2
Over 45% and 60% of SHG efficient are obtained in pulsed and cw Nd:YAG lasers respectively, by angle tuned phase matchable SHG of Nd:YAG laser (1064 nm) and NCPM SHG of laser lasers (1053 nm) of MgO:LiNbO3 at room temperature. LiNbO3 is also a good crystal for high power quasi-phase-matched waveguide structure for doubler, optical parametric oscillator (OPO) and amplifier (OPA).
Fortuneoptronics supplies the typical sizes of MgO:LiNbO3 crystals - 5x5x(20-30) mm3 for OPO and frequency doubler, (20-25)x(20-25)x1 mm3 for waveguide substrates. Other sizes and AR or HR-coatings are available upon request.

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