Crystal growth and characterization of GdxY1−xCa4O(BO3)3 crystal

UV laser generation in GdYCOB crystal

“…It is well known that photoinduced damage in KTiOPO 4 and LiNbO 3 is recovered by annealing [10,11]. We believe that it is possible to use GdYCOB for highpower THG operation at elevated temperature without formation of optical damage such as gray tracks and photorefraction.…”

“…Recently, we have developed a substitutional solid solution of Gd x Y 1x Ca 4 O(BO 3 ) 3 (GdYCOB) crystal with controllable birefringence [4]. By increasing the compositional parameter x it is possible to change the THG phasematching angles of GdYCOB to (T, M) = (90°, 90°).…”

Rare-Earth Calcium Oxyborate Piezoelectric Crystals ReCa4O(BO3)3: Growth and Piezoelectric Characterizations

“…These crystals show the merits of high melting points (1400-1700 °C) and high effective piezoelectric coefficients d eff (5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18) pC/N) [20][21][22][23][24][25][26]; the evaluations of the temperature dependence of dielectric, piezoelectric and electromechanical properties, however, are limited. Of particular significance is that the monoclinic rare-earth calcium oxyborate crystals (ReCa 4 O(BO 3 ) 3 , ReCOB, Re: rare earth), which have been extensively investigated for nonlinear optical applications in the last two decades [27][28][29][30][31][32][33], were reported to exhibit good piezoelectric properties and high electrical resistivity at an elevated temperature of 1000 °C, with no phase transition prior to their melting points (~1400-1520 °C) [1][2][3][34][35][36][37][38]. Table 1 summarizes the basic characteristics of various high temperature piezoelectric crystals in monoclinic, trigonal and tetragonal systems, where the monoclinic ReCOB crystals were found to exhibit relatively high melting points, as well as relatively large piezoelectric coefficients, promising high temperature piezoelectric sensor applications.…”

<title>Growth and dielectric properties of Ca<formula><inf><roman>4</roman></inf></formula>GdO(BO<formula><inf><roman>3</roman></inf></formula>)<formula><inf><roman>3 </roman></inf></formula>single crystals</title>

“…Calcium gadolinium oxoborate Ca 4 GdO(BO 3 ) 3 (CGBO) is a new efficient non-linear optical crystal"' 2 , belonging to the rare earth calcium borate group with general composition Ca 4 RB 3 O, 0 (R = La -Lu, Y). The compound melts congruently at 1480 0 C 1 and the crystal has high hardness (6.5), is nonhydroscopic, chemically stable and easy to polish.…”

“…The compound melts congruently at 1480 0 C 1 and the crystal has high hardness (6.5), is nonhydroscopic, chemically stable and easy to polish. Additionally, it exhibits large transparency region and high damage threshold 3 …”