Borate crystals, second harmonic

These features are exploited in an experiment which is taking place in our laboratory. A schematic diagram of this experiment is shown in figure 4. The system consists of an all-lines violet mode-locked Kr+ ion laser operating at a repetition rate of about 250 MHz Which synchronously pumps a C102 dye laser. The dye laser typically produces about 300 mW of average power and pulse durations of about 3 psec. This is frequency doubled to 243 nm in a crystal of p-barium borate to produce in excess of 2 mW average power. The output from the second harmonic crystal is then mode-matched into an ultra-violet enhancement cavity. The free... 

The 400 mW signal wave of the OPO is subsequently frequency-doubled by a home-built second-harmonic generator. A / -barium borate (BBO) crystal of 100 pm thickness is used as a nonlinear medium [220]. This setup sup-... 

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