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OPTICAL PULSE INTENSITY AND PHASE MEASUREMENT DEVICE AND METHOD

外国特許コード F130007766
掲載日 2013年12月10日
出願国 世界知的所有権機関(WIPO)
国際出願番号 2013JP002735
国際公開番号 WO 2013/161282
国際出願日 平成25年4月23日(2013.4.23)
国際公開日 平成25年10月31日(2013.10.31)
優先権データ
  • 特願2012-101276 (2012.4.26) JP
発明の名称 (英語) OPTICAL PULSE INTENSITY AND PHASE MEASUREMENT DEVICE AND METHOD
発明の概要(英語)

Provided are a method and device which measure the absolute values of spectral intensity and spectral phase of an optical pulse having an arbitrary duration. An optical pulse intensity and phase measurement device comprises: a nonlinear mixing means for nonlinearly mixing a reference optical pulse having an electrical field (Er(t-tau)) which is delayed with an optical delay means with an optical pulse to be measured having an electrical field (E0(t)) and creating a signal optical pulse represented by the following formula (where * is an operator which represents a general nonlinear mixing, and alpha is a coefficient which is proportional to a nonlinear susceptibility in this nonlinear mixing): Er(t-tau)+alphaEr(t-tau)*E0(t)

and an imaging spectrum device which spectrally splits the signal optical pulse and outputs a Fourier transform signal which is represented with the following formula (where F is a symbol which represents the Fourier transform, * represents a complex conjugate, and R is a symbol which represents the real part): |F[Er(t-tau)]|2+|alphaF[Er(t-tau)*E0(t)]|2 + 2R{alphaF[Er(t-tau)]}*&#x30FB

F[Er(t-tau) *E0(t)]}. The intensity and phase of the optical pulse to be measured are derived from a second term signal (frequency resolved optical gate signal) of the Fourier transform signal and a third term signal (electro-optic sampling signal) of the Fourier transform signal.

  • 出願人(英語)
  • ※2012年7月以前掲載分については米国以外のすべての指定国
  • INTER-UNIVERSITY RESEARCH INSTITUTE CORPORATION NATIONAL INSTITUTES OF NATURAL SCIENCES
  • 発明者(英語)
  • FUJI, TAKAO,
  • NOMURA, YUTAKA
国際特許分類(IPC)

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