Efficient ultraviolet generation of 2073-2174 Å in KB5O8/4H2O

Efficient generation of tunable UV radiation at 2073- 2174 Å has been achieved by Type-1 frequency mixing of the fundamental and second harmonic of a high-power visible dye laser in KB
5
O
8
/4H
2
O. A peak power as high as 250 kW with an average power of 15 mW was obtained at 2073 Å.