Spatial light modulator with an over-two-octave bandwidth from ultraviolet to near infrared.
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.
Hazu
Kouji
K
Department of Applied Physics, Hokkaido University, and Japan Science and Technology Agency, CREST, Kita-Ku, Sapporo 060-8628, Japan. kouji@eng.hokudai.ac.jp
Sekikawa
Taro
T
Yamashita
Mikio
M