Quasi-phase-matched optical parametric oscillation with periodically poled stoichiometric LiTaO_3

Abstract

We have demonstrated, for the first time to our knowledge, periodic poling of a 2-mm-thick near-stoichiometric LiTaO(3) substrate and its operation in a nanosecond optical parametric oscillator. Because the coercive field of stoichiometric LiTaO(3) is ~2 kV/mm , which is approximately one tenth that of the conventional congruent field, periodic poling of thicker stoichiometric substrates was successfully performed by means of an electric-field poling process at room temperature. The performance of a parametric oscillator with a 1-mm-thick sample was compared with that of the oscillator with the periodically poled congruent oscillator. The stoichiometric device exhibited better performance.

Growth, optical characterization and evaluation of laser properties of Yb3+, Mg2+:LiTaO3 crystal

“…Lithium tantalite (LiTaO 3 ) is one of the most excellent and useful ferroelectric materials for piezoelectric, linear electricoptic, and nonlinear optic device applications [1,2]. With the addition of MgO doping, the stoichiometric composition allows an optical damage threshold much higher than that of LiNbO 3 , which makes periodically-poled stoichiometric LiTaO 3 (PPSLT) an extremely interesting choice for nonlinear applications, such as, optical parametric amplifiers and generators, and frequency doublers [3][4][5].…”

First‐Principles Studies on Novel Polar Oxide ZnSnO3; Pressure‐Induced Phase Transition and Electric Properties

“…[1,2] Among these NCS oxides, special attention has been paid to the R3c structure owing to a fascination of fundamental science and technical applications. For instance, LiNbO 3 and LiTaO 3 are typical representatives of non-linear optical materials, [3][4][5] and BiFeO 3 is known as a multiferroic material. [6,7] We recently synthesized novel NCS oxides of ZnSnO 3 with a LiNbO 3 (LN)-type structure (R3c) under high-pressure (HP) conditions ($7 GPa).…”

Growth of 4-in diameter MgO-doped near-stoichiometric lithium tantalate single crystals and fabrication of periodically poled structures

“…4(a and b) show the periodically poled structure observed, respectively on +z and Àz surfaces under a phase contrast microscope at some random locations after chemical etching. The domain walls are quite smooth in SLT in contrast to CLT wafers [16]. The domain duty ratio over the 40 mm long device is presented in Fig.…”