Synthesis, Growth and Optical Studies of Mn: α-LiIO₃ Single Crystal

Abstract

Manganese doped alpha-lithium iodate have been synthesized and single crystals have been grown for nonlinear optical applications. The grown crystal has been subjected to single crystal X-ray diffraction to confirm the structure. The crystalline perfection was assessed by high-resolution X- ray diffractometer (HRXRD). Second harmonic generation (SHG) efficiency was found to be 71 times than that of KDP. The UV–Vis-NIR spectroscopic study revealed that the grown crystal has good optical transparency in the visible region clearly indicates that Mn doped α-LiIO3 crystals can be used as window material in optical instruments. Presence of dopant was confirmed by energy-dispersive spectrometry.

Ba2[MoO3(OH)(IO3)2]IO3: A Promising SHG Material Featuring a Λ-Shaped Functional Motif Achieved by Universal Mono-Site Substitution

“…Nonlinear optical (NLO) materials, especially noncentrosymmetric (NCS) second-harmonic-generation (SHG) crystals, have been extensively studied and applied to achieve frequency conversion in the field of laser technology. − Representative SHG materials, such as β-BaB 2 O 4 , KH 2 PO 4 (KDP), AgGaS 2 , and α-LiIO 3 , have been applied commercially. ,− The infrared (IR) NLO crystals currently in use are not available for high-power laser applications due to the narrow band gap and low laser-induced damage threshold (LDT). − It is urgent to search for new NLO materials with both a strong SHG signal and a large band gap (or high LDT). Metal iodate is an important candidate because iodates usually possess an exceptional SHG effect owing to the IO 3 – and IO 4 3– groups with a stereochemically active lone electron pair on I 5+ cation and have a wider band gap than the chalcogenides. ,− …”

Synthesis, Characterization, and Crystal Structure Determination of a New Lithium Zinc Iodate Polymorph LiZn(IO3)3

“…Among them, alkali metal iodates [6], α-HIO 3 [7], and ammonium iodate [8] have attracted large attention not only because of their non-linear optical properties but also because of their piezoelectric and pyroelectric responses. For instance, lithium iodate (LiIO 3 ) has been widely used as a piezoelectric, acousto-optic, and second-harmonic generation (SHG) material [9]. However, LiIO 3 crystals occasionally have OH inclusions which reduce their transparency in the infrared (IR) region, affecting their performance [10].…”