Title:
LIGHT SOURCE APPARATUS AND MAGNETIC FIELD MEASURING APPARATUS
Document Type and Number:
WIPO Patent Application WO/2015/083242
Kind Code:
A1
Abstract:
The present invention addresses the problem of stabilizing signals in magnetic field measurement using optical pumping.
In order to solve the problem, disclosed is a light source apparatus (10) that is characterized in having: a light intensity fluctuation detection circuit (130) that detects intensity fluctuation of light outputted from a laser output unit (11); and an acousto-optic modulator (121) that corrects light intensity on the basis of the light intensity fluctuation detected by means of the light intensity fluctuation detection circuit (130) such that the light intensity is constant. Furthermore, a magnetic field analytical apparatus of the present invention is characterized in having: one sensor unit that passes through light outputted from a light source unit; and a signal control unit that removes fluctuation of light intensity on the basis of two beams of light passed through the sensor unit.
Inventors:
KAWABATA RYUZO (JP)
KANDORI AKIHIKO (JP)
KANDORI AKIHIKO (JP)
Application Number:
PCT/JP2013/082494
Publication Date:
June 11, 2015
Filing Date:
December 03, 2013
Export Citation:
Assignee:
HITACHI LTD (JP)
International Classes:
G02F1/01; G01R33/26; H01S5/0683
Foreign References:
| JPS58163917A | 1983-09-28 | |||
| JPH0550758A | 1993-03-02 |
Attorney, Agent or Firm:
ISONO Michizo (JP)
Michizo Isono (JP)
Michizo Isono (JP)
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