Frequency up conversion imaging with 60 dB gain using picosecond optical paramet

A weak infrared (IR) image amplifier with more than 60-dB optical gain and frequency up-conversion is developed from a picosecond (PS) 355-nm pumped gated optical parametric amplifier (OPA) in a \beta- BaB2O4 (BBO) crystal. The IR image at 1064 nm is amplified and up-converted into the visible regio