Microresonator frequency combs based on the χ (3) nonlinearity are nowadays well understood and making their way into different applications. Recently, microresonator (2) receiving increasing attention, as they promise certain benefits, but still require further study. Here, we present first indication of comb generation, initiated via optical parametric oscillation (OPO) in a lithium niobate m...

a portable and light pneumatic branch shake system was designed and manufactured in this research for harvesting fruits that can be harvested by shaking branch. required air flow and electric current are provided for operating system from category containing electrical generator and air compressor on wheelbarrows and portable chassis. vibration is equipped by programmable logic controller (plc)...

Optical parametric oscillation can convert the input laser into a couple of coherent optical output with signal and idler frequencies. It is an important method for realization broadband middle infrared tunable lasers. The process depends on ultra-fast non-linear response matter to light certain pump power. Therefore, reducing threshold improving energy conversion efficiency are great significa...