Noncritically phase-matched second-harmonic-generation chalcopyrites based onCdSiAs2andCdSiP2

Growth and characterization of large CdSiP2 single crystals

“…They can, however, be plagued by defect related absorption losses near the band edge when grown from the melt, but these can often be eliminated by post-growth processing. CdSiP 2 is a II-IV-V 2 compound that has been examined by several authors starting in the late 1960s [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17]. Borshchevskii et al [5] reported halogen assisted vapor transport growth of the compound as early as 1967, and Spring-Thorpe and Pamplin [4] reported growth from molten tin solution in 1968.…”

“…The birefringence of tiny 2 Â 2 Â 0.2 mm 3 CdSiP 2 crystals grown from a molten tin flux was measured by Itoh et al [2] and found to be À 0.045 at 840 nm. More recent studies examined the cathodoluminescence [11] and nuclear magnetic resonance (NMR) spectra [12] of small CdSiP 2 crystalline samples, and recent theoretical studies examined the calculated electronic band structure [13][14][15][16]. Crystals grown through either solution or halogen-assisted vapor transport were never of sufficient size or quality to create non-linear optical devices or to measure the ordinary and extraordinary refractive index of CdSiP 2 as a function of wavelength throughout its transparency range to determine if it could be phase matched.…”

Ba4AgGa5Pn8(Pn = P, As): new pnictide-based compounds with nonlinear optical potential

“…Aiming at this purpose, there were many chalcogenides synthesized recently which have already showed potential for the mid-infrared utilization. 20 The discovery of new pnictide-based NLO compounds was relatively rare and in this field studies seem still predominantly focused on the classical binary semiconductors like GaAs 21,22 and ternary chalcopyrite semiconductors such as CdSiP 2 , 23 CdGeAs 2 . Such examples have been frequently reported, such as K 3 Ta 2 AsS 11 , 18 Ba 23 Ga 8 Sb 2 S 23 19 and Ba 4 CuGa 5 S 12 .…”

Synthesis of high-quality CdSiP2 polycrystalline materials directly from the constituent elements

“…It is a negative uniaxial II-IV-V 2 chalcopyrite semiconductor compound (space group I4 2d) that is considered to be derived from III-V compound with zinc blende structure [1]. CdSiP 2 has unique properties such as a very high nonlinear optical coefficient (d 36 ¼84.5 pm/V), good thermo-mechanical properties (thermal conductivity¼ 13.6 W/(m K), microhardness ¼9.3 GPa), a wide transparency range (0.5-9 mm), a sufficient birefringence (n e À n o ¼ À0.5) for phase-matched frequency shifting and a large band gap (2.45 eV) that can be pumped using 1.064 mm solid state laser without two-photon absorption [2][3][4][5][6][7][8]. With all these superior properties, CdSiP 2 has attracted considerable interest recently.…”