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High-average-power light source below 200 nm from a KBe(2)BO(3)F(2) prism-coupled device
1Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, China. cct@cl.cryo.ac.cn
Optics Letters
|February 5, 2008
Abstract:
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.

