Efficient Generation of the Sixth Harmonic at 224 nm Using a Temperature Gradient Applied to BBO

The fundamental radiation of picosecond NIR Nd:YVO4 laser was converted to the sixth harmonics at 224 nm with an average power of 1 W by optimizing the temperature gradient applied to BBO. The developed laser also provides 1342, 671 and 447 nm radiation wavelengths with an output power of 10 W, 6 W and 4 W at 300 kHz.