Double Second-order Jahn-Teller Strategy Driven NLO Response in Sulfate Crystal Nb2O2(TeO3)2(SO4) with a Large Birefringence

Key Points

• The research aims to investigate the nonlinear optical response of the sulfate crystal Nb2O2(TeO3)2(SO4) using a double second-order Jahn-Teller strategy.
• Characterization of Nb2O2(TeO3)2(SO4) sulfate crystals
• Analysis of nonlinear optical properties
• Assessment of birefringence in the NLO response
• The introduction of a double second-order Jahn-Teller strategy significantly improved the NLO response of the crystal
• Birefringence measurements showed large values, indicating high optical performance