[OPTICAL REVIEW Vol. 6, No. 6 (1999) 507-512]

Optical Spectrogram Scope Using Time-to-Two-Dimensional Space Conversion and Interferometric Time-of-Flight Cross Correlation

Tsuyoshi KONISHI and Yoshiki ICHIOKA

Osaka University, Graduate School of Engineering, Material and Life Science, 2-1, Yamadaoka, Suita, 565-0871 Japan

(Received June 7, 1999; Accepted August 24, 1999)

We demonstrate a new tool called optical spectrogram scope for visualization of a spectrogram or a scalogram of optical ultrafast phenomena. The optical spectrogram scope is constructed on the basis of the time-to-two-dimensional-space conversion technique capable of converting a set of time-varying frequency distributions into two-dimensional spatial ones.

Key words : spectrogram, time-frequency transform, time-scale transform, interferometric time-of-flight cross correlation, time-space conversion