Title :
Thermal control of diffraction wavelength in holographic polymer dispersed liquid crystal by using different grating structure
Author :
Ogiwara, Akifumi ; Shichi, Hiromu ; Kakiuchida, Hiroshi ; Yoshimura, Kazuki
Author_Institution :
Dept. of Electron. Eng., Kobe City Coll. of Technol., Kobe, Japan
Abstract :
A microperiodic structure composed of polymer and liquid crystal phases, called holographic polymer dispersed liquid crystal (HPDLC), is fabricated based on a photo-induced phase separation technique by laser interferometric exposure. The diffraction wavelength of HPDLC formed by different grating structures is experimentally investigated by spectroscopic measurements as a function of temperature at around 35°C. The HPDLC volume gratings composed of different film thickness show the controllability of diffraction wavelength between visible and infrared lights with a rise in temperature.
Keywords :
diffraction gratings; holographic gratings; light interferometry; optical fabrication; phase separation; polymer dispersed liquid crystals; thin films; HPDLC volume gratings; diffraction wavelength; film thickness; holographic polymer dispersed liquid crystal; infrared light; laser interferometric exposure; microperiodic structure; optical fabrication; photo-induced phase separation technique; spectroscopic measurements; thermal control; visible light; Diffraction; Diffraction gratings; Films; Gratings; Polymers; Temperature control; Temperature dependence;
Conference_Titel :
Microoptics Conference (MOC), 2013 18th
Conference_Location :
Tokyo
