Hydrothermal single crystal growth and second harmonic generation of Li2SiO3, Li2GeO3 and Li2Si2O5

Developing new antiferroelectric and ferroelectric oxides and chalcogenides within the A2BX3 family

“…The known materials (K 2 PbO 3 , Rb 2 PbO 3 , K 2 TiS 3 , Cs 2 ZrSe 3 , etc.) are oxides, sulfides, and selenides that have already been synthesized and characterized using a variety of methods that include molten hydroxide fluxes [62], high-temperature ampule reactions [61], solid-state calcination [74], hydrothermal growth [75], and sol-gel reactions [73], and whose functional properties as FE and AFE materials has previously gone overlooked. The main goals of this study are to (a) develop methodology for future high-throughput studies, (b) more fully map out the potential energy landscape of antipolar and polar A 2 BX 3 compositions, (c) predict new semiconductive AFE and FE materials that are yet to be synthesized, and (d) investigate the effects of compositional tuning on known structures.…”

Liquid-Phase Epitaxial Growth and Characterization of Nd:YAl3(BO3)4 Optical Waveguides

“…This typically requires careful polishing to ensure that the active layer is sufficiently flat and thin. Epitaxial growth processes [8], such as liquid phase epitaxy (LPE) [9], pulsed laser deposition [10], molecular beam epitaxy (MBE) [11], hydrothermal epitaxy [12], metal oxide chemical vapor deposition (MOCVD) [13], and halide vapor phase epitaxy (HVPE) [14], enable the production of high-quality crystalline materials, which are practical for waveguide fabrication.…”

Liquid-Phase Epitaxial Growth and Characterization of Nd:YAl₃(BO₃)₄ Optical Waveguides

“…This typically requires careful polishing to ensure that the active layer is sufficiently thin. Epitaxial growth processes [8] such as liquid phase epitaxy (LPE) [9], pulsed laser deposition [10], molecular beam epitaxy (MBE) [11], hydrothermal epitaxy [12], metal oxide chemical vapor deposition (MOCVD) [13], or halide vapor phase epitaxy (HVPE) [14], enable production of high quality crystalline materials, which are practical for waveguide fabrication.…”

“…There has been long-standing interest in multifunctional doped borate laser crystals [10][11][12][13][14][15][16][17][18][19], for use in compact robust lasers emitting fundamental or self-frequency-doubled wavelengths, with Qswitched, mode-locked or continuous wave operation. The thermal conductivity of these crystals of 10 facilitates the operation of the lasers at high power and in thin disk geometries [20][21][22], and un-doped borates have been adopted for nonlinear optics [23,24].…”

“…This has led to a new drive for improved growth techniques for these crystals. Various approaches to optimize the crystal growth; the choice, preparation, and mixing of the flux, and the temperature profile, have been reported [10][11][12]. There is a balance between the relatively slow growth of the crystals, and the control of the crystal phase and uniformity, due to the formation of crystal twins [25,26].…”