Title:
METHOD AND DEVICE FOR DIRECT ULTRAHIGH SPEED CONVERSION FROM TIME SIGNAL TO SPACE SIGNAL
Document Type and Number:
WIPO Patent Application WO/2001/098826
Kind Code:
A1
Abstract:
A direct ultrahigh speed conversion method in which a signal pulse light (3, 3') having an adequate spatial width and a reference extremely short pulse light (4) are simultaneously made to enter an ultrahigh-speed optical storage device (2) at adequate angles formed on both sides of the optical axis. The time waveforms of the signal pulse light (3, 3') and the reference extremely short pulse light (4) are projected onto a spatial plane. The interference fringes (5, 5') produced by the interference between the spatially projected images of the traveling two light waves corresponding to the cross-correlation waveforms of the signal pulse light (3, 3') and the reference extremely short pulse light (4) are recorded in the ultrahigh-speed storage device (2). The image of the spatial distribution of the self-diffraction light (7, 7') of the reference extremely short pulse light produced by the spatial distribution of the recorded interference fringes is formed through an image-forming lens (8), thereby converting the spatial distribution to the one corresponding to the time waveform of the input signal pulse light (3, 3').
Inventors:
KONISHI TSUYOSHI (JP)
ICHIOKA YOSHIKI (JP)
ICHIOKA YOSHIKI (JP)
Application Number:
PCT/JP2001/005206
Publication Date:
December 27, 2001
Filing Date:
June 19, 2001
Export Citation:
Assignee:
JAPAN SCIENCE & TECH CORP (JP)
KONISHI TSUYOSHI (JP)
ICHIOKA YOSHIKI (JP)
KONISHI TSUYOSHI (JP)
ICHIOKA YOSHIKI (JP)
International Classes:
G02F2/00; G02F3/00; G11B7/0065; G11C13/04; (IPC1-7): G02F3/00
Foreign References:
| JPH05100256A | 1993-04-23 | |||
| US5528389A | 1996-06-18 |
Other References:
KAZUHIRO EMA ET AL.: "Hakei seikei wo riyou shita chou-kousoku kouhaikei sokutei-hou to sono ouyou", TOKYO DAIGAKU KOUGAKUBU SOUGOU SHIKENJO NENPOU, vol. 50, 1991, pages 79 - 85, XP002945936
MARTIN C. NUSS, MELISSA LI, T.H. CHIU: "Time-to space mapping of femtosecond pulses", OPT. LETT., vol. 19, no. 9, 1 May 1994 (1994-05-01), pages 664 - 666, XP002945937
MARTIN C. NUSS, MELISSA LI, T.H. CHIU: "Time-to space mapping of femtosecond pulses", OPT. LETT., vol. 19, no. 9, 1 May 1994 (1994-05-01), pages 664 - 666, XP002945937
Attorney, Agent or Firm:
Hasegawa, Fumihiro (Nishi-Nippori 5-Chome Arakawa-ku, Tokyo, JP)
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