Title:
MEASURING APPARATUS OF WAVEFORM OF OPTICAL PULSE
Document Type and Number:
Japanese Patent JPH04240530
Kind Code:
A
Abstract:
PURPOSE:To measure the waveform of an optical pulse in a wide range of wavelength with high resolution by obtaining a signal corresponding to the correlation of higher order, higher harmonics and a signal corresponding to the correlation of a fundamental wave without using a nonlinear medium. CONSTITUTION:Two optical pulses having a delay one another which are obtained by dividing the light with use of a half mirror 22B of a Michelson interferometer 22 are combined and then made incident into a photoelectric surface 24A of a multiphoton absorption type of a photomultiplier 24 to be a photoelectron proportional to not smaller than a square of the intensity of the incident light. Outputs from the photoelectric surfaces of a multiphoton absorption type and a single photon absorption type of the photomultiplier represent a nonlinear self-correlative waveform and a linear correlative waveform, respectively. The waveform of the optical pulse can be obtained by analyzing the waveforms by an analyzing device 16.
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Inventors:
URAGAMI TSUNEYUKI
SUYAMA MOTOHIRO
SUYAMA MOTOHIRO
Application Number:
JP4725291A
Publication Date:
August 27, 1992
Filing Date:
January 25, 1991
Export Citation:
Assignee:
HAMAMATSU PHOTONICS KK
International Classes:
G01J11/00; (IPC1-7): G01J11/00
Attorney, Agent or Firm:
Keisuke Matsuyama (2 outside)