OPTICAL PULSE INTENSITY AND PHASE MEASUREMENT DEVICE AND METHOD
外国特許コード | F130007766 |
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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 |
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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)]}*・ 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. |
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国際特許分類(IPC) |
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日本語項目の表示
発明の名称 | 光パルスの強度と位相を測定する装置及び方法 |
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