Efficient generation of mid-infrared photons at 3.16 μm by coherent frequency downconversion

摘要

We demonstrated an efficient way for generating a mid-infrared source at 3.16 μm by coherent coincidence downconversion. The signal light at 1.04 μm was frequency downconverted by the synchronized pump pulses at 1.55 μm with a conversion efficiency of 65%.