Landry M J, McCarthy A E
Appl Opt. 1973 Oct 1;12(10):2312-9. doi: 10.1364/AO.12.002312.
The ON-OFF ratio, insertion loss, and switching speed of polycrystalline ferroelectric ceramic PLZT electrooptic shutters fabricated with a zirconium to titanium ratio of 65 to 35 and a lanthanum concentration of approximately 8% were investigated as functions of voltage amplitude and duration. Larger ON-OFF ratios (33 dB for dc mode) were observed for the chemically prepared material than for the mixed oxide material (18 dB). Similar results were observed in the pulsed mode. The relatively low insertion losses (4.5 dB) and fast half-wave retardation switching ( approximately 1 microsec) are acceptable for many shutter applications. Observed variations of these characteristics with number of switching cycles are undesirable.
研究了锆钛比为65比35且镧浓度约为8%的多晶铁电陶瓷PLZT电光快门的开-关比、插入损耗和开关速度与电压幅度和持续时间的关系。对于化学制备的材料，观察到的开-关比（直流模式下为33 dB）比混合氧化物材料（18 dB）更大。在脉冲模式下也观察到了类似的结果。相对较低的插入损耗（4.5 dB）和快速的半波延迟开关（约1微秒）对于许多快门应用来说是可以接受的。观察到这些特性随开关周期数的变化是不理想的。
