Title:
時間信号の空間信号への直接超高速変換方法および装置
Document Type and Number:
Japanese Patent JP4044271
Kind Code:
B2
Abstract:
A signal light pulse and a reference ultra-short light pulse each having an appropriate spatially lateral width are launched simultaneously into an ultra-high-speed optical memory element from both sides of an optical axis thereof at appropriate angles with respect to the axis. Temporal waveforms of the signal light pulse and reference ultra-short light pulse are projected onto a plane. An interference fringe produced by interference between spatial projection images of two moving light waves corresponding to cross-correlation waveforms of the signal light pulse and reference ultra-short light pulse is retained in the ultra-high-speed optical memory element. A spatial distribution of self-diffracted light of the reference ultra-short light pulse produced in accordance with the spatial distribution of the retained interference fringe corresponding to the cross-correlation waveforms is imaged using an image forming lens and thus, is converted into a spatial distribution corresponding to the temporal waveform of the input signal light pulse.
Inventors:
Takeshi Konishi
Yoshiki Ichioka
Yoshiki Ichioka
Application Number:
JP2000182667A
Publication Date:
February 06, 2008
Filing Date:
June 19, 2000
Export Citation:
Assignee:
Japan Science and Technology Agency
International Classes:
G02F1/01; G02F2/00; G02F3/00; G11B7/0065; G11C13/04
Domestic Patent References:
| JP5100256A | ||||
| JP4333830A |
Other References:
東京大学工学部総合試験所年報,1991年,第50巻,79-85
Opt.Lett.,1993年,Vol.18,No.24,2129-2131
第59回応用物理学会学術講演会講演予稿集,1998年,No.3,901,16a-A-9
OPTRONICS,1995年,No.9,148-152
Opt.Lett.,1993年,Vol.18,No.24,2129-2131
第59回応用物理学会学術講演会講演予稿集,1998年,No.3,901,16a-A-9
OPTRONICS,1995年,No.9,148-152
Attorney, Agent or Firm:
Fumihiro Hasegawa
Akihiko Watanabe
Akihiko Watanabe