研究目的
Investigating the formation and evolution of domain structures in congruent lithium niobate crystals induced by multiple infrared laser pulse irradiation.
研究成果
The study demonstrated that multiple infrared laser pulse irradiation induces complex domain structure evolution in congruent lithium niobate, including the formation of nanodomain traces and quasi-regular comb-like structures. This opens new avenues for domain engineering applications.
研究不足
The study is limited to congruent lithium niobate crystals and specific conditions of infrared laser pulse irradiation. The effects of other materials or irradiation conditions were not explored.
1：Experimental Design and Method Selection:
The study involved irradiating congruent lithium niobate (CLN) crystals with multiple pulses from an infrared laser to observe domain structure formation and evolution.
2：Sample Selection and Data Sources:
Z-cut plates of CLN were used, with some samples having their polar surface covered by a conductive indium–tin oxide (ITO) layer.
3：List of Experimental Equipment and Materials:
A CO2 laser, optical microscope Olympus BX51, scanning electron microscope Auriga CrossBeam Workstation, and modified NTEGRA SPECTRA system for Cherenkov-type SHG microscopy were employed.
4：Experimental Procedures and Operational Workflow:
Samples were irradiated with laser pulses, followed by domain imaging via selective chemical etching and microscopy.
5：Data Analysis Methods:
The geometrical parameters of the domain structure were analyzed using SIAMS-CP Nanotech software, and computer simulations were performed using COMSOL Multiphysics software.
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