Efficient Generation of Deep Ultraviolet Radiation Using LiB₃O₅ Crystal

Efficient generation of deep ultraviolet radiation at wavelength of less than 0.20μm obtained by using LiB₃O₅ crystal is reported. High power radiation at 0.1914μm has been produced via sum-frequency-mixing of two waves with wavelengths of 0.2128 and 1.9071μm in LiB₃O₅ crystal. An average output power of about 2.0mW and a conversion efficiency of 8% have been achieved.