Hazu Kouji, Sekikawa Taro, Yamashita Mikio
Department of Applied Physics, Hokkaido University, and Japan Science and Technology Agency, CREST, Kita-Ku, Sapporo 060-8628, Japan.
Opt Lett. 2007 Nov 15;32(22):3318-20. doi: 10.1364/ol.32.003318.
We developed a 1-pixel ultraviolet-to-near-infrared (UV-to-NIR) liquid-crystal spatial light modulator (LC-SLM) and clarified its phase modulation properties in detail, for the first time to our knowledge. The employed liquid crystal is transparent over 260-1100 nm. A phase modulation capability of 55.8 rad at 305 nm and 14.0 rad at 1000 nm is enough to compensate for UV-to-NIR nonlinear chirped pulses. The LC-SLM driving parameters of a period T=13 ms and an applied voltage V(DD)=7.0 V were determined. The 648-pixel extension of this new device will permit us to realize the high-power generation of single subcycle optical pulses and the direct UV-to-NIR pulse shaping.
据我们所知，我们首次开发了一种1像素的紫外到近红外（UV - NIR）液晶空间光调制器（LC - SLM），并详细阐明了其相位调制特性。所使用的液晶在260 - 1100纳米范围内是透明的。在305纳米处55.8弧度和在1000纳米处14.0弧度的相位调制能力足以补偿紫外到近红外的非线性啁啾脉冲。确定了周期T = 13毫秒和施加电压V(DD)=7.0伏的LC - SLM驱动参数。这种新器件的648像素扩展将使我们能够实现单亚周期光脉冲的高功率产生以及直接的紫外到近红外脉冲整形。
