Suzuki Masato, Yamane Keisaku, Sakamoto Moritsugu, Oka Kazuhiko, Toda Yasunori, Morita Ryuji
Opt Express. 2018 Feb 5;26(3):2584-2598. doi: 10.1364/OE.26.002584.
We proposed and constructed a system to realize broadband generation of arbitrary axisymmetrically polarized (AP) pulses with spatial complex amplitude modulation. This system employs the combination of a spatial light modulator in the 4-f configuration (4-f SLM), and a space variant wave plate as a common path interferometer. The 4-f SLM and the common path interferometer offer compensation for spatial dispersion with respect to wavelength and stability to perturbation, respectively. We experimentally demonstrated the various AP pulses generation by applying modulations of fundamental and higher-order Laguerre-Gauss modes, whose radial indices were, respectively, p = 0 and 1, with high purity, which showed that we were able to generate arbitral AP pulses with spatial complex amplitude modulation. This technique is expected to be applied in both classical and quantum communications with higher-order modes.
我们提出并构建了一个系统，以实现具有空间复振幅调制的任意轴对称偏振（AP）脉冲的宽带产生。该系统采用4-f配置的空间光调制器（4-f SLM）与空间可变波片相结合，作为共光路干涉仪。4-f SLM和共光路干涉仪分别对波长的空间色散提供补偿以及对扰动具有稳定性。我们通过应用基模和高阶拉盖尔 - 高斯模式的调制，分别实验证明了各种AP脉冲的产生，其径向指数分别为p = 0和1，且具有高纯度，这表明我们能够产生具有空间复振幅调制的任意AP脉冲。该技术有望应用于高阶模式的经典和量子通信中。
