Kyohei IWAMOTO, Tsuyoshi KONISHI, Kazuyoshi ITOH and Yoshiki ICHIOKA¹

Department of Material and Life Science, Graduate School of Engineering Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
¹Nara National College of Technology, 22 Yatamachi, Yamatokoriyama, Nara 639-1080, Japan

(Received September 17, 2002; Accepted March 10, 2003)

We propose a new technique for an interconversion between a three dimensional (3-D) spatial signal and a temporal signal. It is realized by combination of a holographic technique, a 2-D spatial filtering technique and a time-space conversion technique. Using this method, we can physically utilize the multiplicity between a temporal domain parameter and all of the spatial domain parameters of light. To demonstrate the proposed technique, we achieved experimentally conversion from different three point light sources as 3-D spatial signals into a temporal signal and vice versa.

Key words: ultrashort laser, 3-D spatial signal, holography, optical information processing, optical data format conversion