[摘要]:A 21.4 mm long noncritically cut CdSiP2 crystal, pumped by 8 ns pulses at 1064 nm in a double-pass configuration for pump, signal, and idler, generated 523 mu J, 5.8 ns idler pulses at 6.125 mu m. The average power of 52.3 mW at the repetition rate of 100 Hz is the highest ever achieved at such wavelengths with direct down conversion from the 1 mu m spectral range. (C) 2012 Optical Society of America