Room temperature 90° phase-matching in zirconium and magnesium co-doped lithium niobate crystals

Scientific Reports
Tengfei KongJingjun Xu

Abstract

Laser has been widely used in many aspects, by now it is difficult to get each frequency that we want, and frequency conversion is an effective way to obtain different frequency laser through a nonlinear optical crystal. MgO-doped LiNbO3 (Mg:LN) crystal has usually been used for second harmonic generation (SHG) through temperature-matching configuration with a stove, till now a room temperature 90° phase-matching is still lacking. Here we find that the SHG of Nd:YAG laser is achieved at 26.1 °C while the optical damage resistance is higher than 6.5 MW/cm2 in the ZrO2 and MgO co-doped LiNbO3 (Zr,Mg:LN) crystal. Moreover, the monotonic decrease of phase-matching temperature is firstly found with the increase of doping concentration. These unusual properties may be attributed to the formation of [Formula: see text]  + [Formula: see text] defect pairs. Our work suggests that Zr,Mg:LN crystal may be an attractive candidate for nonlinear optical applications.

References

Sep 15, 1990·Optics Letters·T R VolkN M Rubinina
May 15, 2013·Optics Express·Tian TianJingjun Xu
Aug 2, 2013·Optics Letters·László KovácsJános Hebling
Dec 7, 2013·Science·Martti Kauranen
Apr 3, 2014·Optics Letters·Saroj R TripathiKodo Kawase
Jun 6, 2014·Scientific Reports·Shin'ichiro HayashiHiroaki Minamide
Apr 18, 2017·Applied Optics·Ying KangHaiyang Zhang

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