Type-I and type-II noncritical phase matching of LiB3O5 crystal

Abstract
Noncritical phase‐matching properties for LiB3O5 crystal are reported. Second‐harmonic generation (SHG) with temperature‐tuned phase matching was measured at a fundamental wavelength ranging from 1340 to 900 nm with corresponding temperature tuning from −10 to 280 °C. Based on the experimental results a new type of SHG device has been made from the crystal, and the advantage of such a device is also demonstrated.