鐵電性液晶ZLI-4654-000之近紅外光二倍頻現象研究

Abstract

為了以鐵電性液晶代替產生兆赫波的差頻晶體，必須對於液晶進行一些非線性現象之研究，因此先進行二倍頻的量測。 以近紅外線高功率飛秒雷射照射鐵電性液晶樣品，藉由旋轉樣品，觀察二倍頻訊號的強弱變化，進而探討其非線性係數，建立Merck公司生產ZLI-4654-000的非線性張量。

In order to replace THz-producing crystal with the Ferroelectric Liquid Crystal, we must perform some study of the nonlinear phenomenon on the liquid crystal. Therefore, the measurement of SHG is processed first. Using the Near Infrared femtosecond laser to irradiate the sample of the ferroelectric liquid crystal and observing the change of the SHG signals by rotating the sample help us study the nonlinear coefficient to set up the nonlinear tensor of ZLI-4654-000, manufactured by Merck.