Subsurface damage minimization of KDP crystals

Study on defects during Fe3+ doping and annealing in ADP crystals

“…This journal is © The Royal Society of Chemistry 2024 corresponds to the stretching vibration of the N-H⋯O hydrogen bond; the peak at 2860 cm −1 may be related to organic residues in the samples; the peak at 3190 cm −1 is due to the stretching vibration of the N-H bond. The IR active normal modes of vibration in ADP crystals include the symmetric stretching vibration of PO 4 ions at 967 cm −1 , the asymmetric stretching vibration at 1170 cm −1 , and the bending vibrations at 516 cm −1 and 589 cm −1 . Additionally, NH 4 + ions exhibit asymmetric bending vibrations at 1330 cm −1 and symmetric bending vibrations at 1480 cm −1 .…”

“…Inorganic crystals such as potassium dihydrogen phosphate (KH 2 PO 4 , KDP), ammonium dihydrogen phosphate (NH 4 H 2 PO 4 , ADP), and barium borate (BaB 2 O 4 , BBO) are extensively applied in the fields of frequency converters, monochromators, optoelectronic switches, and optical storage devices due to their outstanding nonlinear optical properties. [1][2][3][4] In high-power laser systems, KDP is currently the only nonlinear optical crystal in practical use. 5 ADP crystals, which share a similar structure with KDP, exhibit superior optical uniformity, enhanced SHG coefficients, improved thermal stability, and higher laserinduced damage thresholds (LIDTs).…”

Characteristics analysis of fused silica material and experimental research on polishing removal efficiency

“…In terms of the research on the formation mechanism of subsurface damage, Wang et al studied the subsurface damage caused by fused silica material during the grinding process [13] . Fu et al obtained the changes in parameters such as load-depth curve, elastic modulus, hardness, and stress-strain curve through nanoindentation experiments, and explored the material elastic-plastic deformation mechanism [14][15] . Mao et al carried out a nanoindentation test to research the effect of strain rate on hardness [16] .…”