Title :
Controlling THz wave transmission through organic copper phthalocyanine (CuPc) films on Si by optical excitation
Author :
Yoo, Hyung Keun ; Kang, Chul ; Lee, Kiejin ; Kee, Chul-Sik ; Lee, Joong Wook
Author_Institution :
Dept. of Phys., Sogang Univ., Seoul, South Korea
Abstract :
We show that transmission of THz waves through an organic copper phthalocyanine (CuPc) film on a Si wafer can be controlled by optical excitation. The carriers excited in silicon are injected into a CuPc film and transport along well-ordered direction of a CuPc film, resulting in making a CuPc film metallic and decreasing the THz transmission. Modulation efficiency depends on the phases of CuPc films. CuPc film/Si layers can be exploited for THz optical modulators.
Keywords :
copper compounds; integrated optics; light transmission; microwave photonics; optical control; optical films; optical modulation; organic semiconductors; semiconductor thin films; Si; THz wave transmission; carrier excitation; metallic thin film; optical control; optical excitation; optical modulation; optical modulators; organic copper phthalocyanine films; silicon wafer; Optical attenuators; Optical device fabrication; Optical films; Optical filters; Optical modulation; Silicon;
Conference_Titel :
Lasers and Electro-Optics (CLEO), 2011 Conference on
Conference_Location :
Baltimore, MD
Print_ISBN :
978-1-4577-1223-4
