SGER: Tera-Hertz Polarization-Switching Surface-Emitting Lasers

9526515周，这项研究的目标是实验证明我们最近提出的一种创新的超高频偏振开关垂直腔面发射激光器(PS-VCSEL)1。这种创新的激光器是基于我们最近开发的人造四分之一波片，它使用了周期小于光波长(即亚波长)的纳米级非晶硅光栅2。亚波长光栅四分之一波片的独特之处在于其双折射比石英等天然双折射晶体的双折射高三个数量级以上。因此，这种亚波长光栅四分之一波片的使用将使PS-VCSEL的扩展腔减小三个数量级，振荡频率提高三个数量级。***

9526515 Chou The goal of the proposed research is to experimentally demonstrate an innovative ultra-high frequency polarization-switching vertical-cavity surface-emitting laser (PS-VCSEL) that we have proposed recently 1 . the innovative laser is based on our recent development of the artificial quarter-wave plates that employ nanoscale amorphous silicon gratings with periods less than the wavelength of light (i.e.: subwavelength) 2 . The unique feature of the subwavelength-grating quarter-wave plate is that its birefringence is over three orders of magnitude higher than that in a natural birefringence crystal such as quartz. Therefore, use of such subwavelength-grating quarter-wave plate will reduce the extended cavity of PS-VCSEL by three order of magnitude and increase the oscillation frequency by three orders of magnitude. ***