Single-Crystalline Li₂Sn(IO₃)₆ Microwires: Combining Optical-Waveguiding and Frequency-Doubling Functions

High-qualitysingle-crystalline Li2Sn(IO3)(6) microwires(MWs) have been successfully prepared byusing a facile hydrothermal method. The as-synthesized Li2Sn(IO3)(6) MWs exhibit regular hexagonal prismmorphology, excellent surface smoothness, and remarkable diameteruniformity. The optical propagation loss has been determined to beas low as 0.026 dB mu m(-1) at 785 nm wavelength,implying the low-loss optical waveguiding capability of the Li2Sn(IO3)(6) MWs. The effective frequency-doublingconversions of the fundamental frequency light source in the wavelengthrange from 916 to 1560 nm have been observed, and the second-harmonicgeneration (SHG) conversion efficiency has been measured to be 2.1%with a 1560 nm fundamental pump source (pulse duration of 10 ns, andaverage power of 9.06 nW) transmitted through a 1.32-mu m-diameterand 300-mu m-length Li2Sn(IO3)(6) MW. These intriguing optical waveguiding and strong SHG conversioncapabilities of the Li2Sn(IO3)(6) MWssuggest its potential applications for photonic devices in micrometerscale. High-quality single-crystalline Li2Sn(IO3)(6) microwires have been successfullyprepared usinga facile hydrothermal method and identified to exhibit outstandingoptical waveguiding and second-harmonic generation performance.