Fabrication of periodic poled lithium niobate for three-wave mixing
Lithium niobate (LiNbO3, LN) is a ferroelectric crystal used as a generation medium via nonlinear optical conversions. By periodically poling LN (PPLN) nonlinearities are enhanced for select wavelengths. This is due to the longer interaction length of the crystals in PPLN, instead of sub-mm it increases to a few cm, which produces a crystal with a high degree of effective nonlinearity. Poling LN causes a localized reversal in the direction of the permanent polarization of the crystal (i.e. domain reversal). In this work, we report our efforts towards the development of PPLN using photolithography and applying the bias voltage in a conductive aqueous solution. Ultra-high biased voltages show great promise for fabricating PPLN. The ultimate goal of this work is to use PPLN crystals for three-wave mixing and terahertz (THz) generation.
Imad Agha, Jay Mathews
Primary Advisor's Department
Stander Symposium poster
"Fabrication of periodic poled lithium niobate for three-wave mixing" (2019). Stander Symposium Posters. 1637.