Phase-insensitive, Single wavelength, All-Optical transistor Based on second-Order nonlinearities

Z. Wang, D.J. Hagan, E.W. VanStryland, and G. Assanto

Electron. Lett. 32, 1135-1136 (1996)


The authors describe how the phase-sensitivity problem of optical transistors based on second order nonlinearities may be avoided using two type-II SHG crystals. The first crystal couples the mutually incoherent signal and pump, and the second crystal amplifies this signal. All inputs and outputs may be at the same wavelength.