Shih Tsung-Sheng, Lan Yu-Ping, Lin Yea-Feng, Pan Ru-Pin, Pan Ci-Ling
Opt Express. 2004 Dec 27;12(26):6434-9. doi: 10.1364/opex.12.006434.
We report a novel external cavity laser diode (lambda= 1.5 mum). An intra-cavity liquid crystal pixel mirror allows digitally tuning of the laser wavelength to more than 40 wavelength channels of 100 GHz spacing according to the International Telecommunication Union (ITU) grid. Laser wavelength can further be fine-tuned by varying the driving voltages applied to an intra-cavity planar nematic liquid crystal phase plate. With a cell 52.3 mum in thickness, the output frequency can be continuously tuned over 1.89 GHz. The root-mean-square voltage required for driving the phase plate was from 1.00 to 4.56 volts.
我们报道了一种新型外腔激光二极管（波长λ = 1.5微米）。腔内液晶像素镜可根据国际电信联盟（ITU）网格，将激光波长数字调谐到间距为100 GHz的40多个波长通道。通过改变施加到腔内平面向列型液晶相位板的驱动电压，激光波长可进一步微调。对于厚度为52.3微米的液晶盒，输出频率可在1.89 GHz范围内连续调谐。驱动相位板所需的均方根电压为1.00至4.56伏。
