Quartz crystals have the property that their amplitude/phase characteristic repeats itself at frequencies that are an uneven multiple of the fundamental frequency. There are so-called overtone ...

Nonlinear photonic devices, particularly those that can be fabricated by planar processing technology, show great promise for future all-optical signal processing. In configurations that perform ...

Harmonic comb generators have been available for a long time and are useful for many purposes. They produce a fixed series of harmonic signals with stable frequency and amplitude over a range of ...