High-average-power light source below 200 nm from a KBe(2)BO(3)F(2) prism-coupled device.
Using a 2.3 mm thick KBe(2)BO(3)F(2) crystal optically contacted with CaF(2) in a prism-coupled device, we have obtained an average output power of as much as 360 mW at 200 nm. Long-term stability was verified above a 150 mW level at 200 nm. An output power of 50 mW was also obtained with a narrow spectral width of 0.007 pm at 193.5 nm.
Chen
C T
CT
Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, China. cct@cl.cryo.ac.cn
Kanai
T
T
Wang
X Y
XY
Zhu
Y
Y
Watanabe
S
S