Limit of sensitivity of laser ellipsometry for the detection of magnetically-induced birefringence

Author

Muroo, K. ; Namikawa, M. ; Takubo, Y.

Author_Institution

Dept. of Appl. Phys., Tokyo Univ., Japan

Volume

4

fYear

1999

fDate

Aug. 30 1999-Sept. 3 1999

Firstpage

1326

Abstract

The technique to detect small birefringence has been developed and systematic measurements on the magnetically-induced birefringence of the gaseous samples oxygen, nitrogen, and the noble gases, have been made. In the present paper we describe a noise reduction technique to attain the shot-noise limit. Our approach is based on a light extinction ratio which is good enough to reduce the noise due to fluctuations of the light source intensity and on an proper adjustment of the polarization state of incident light.

Keywords

birefringence; ellipsometry; light polarisation; magneto-optical effects; measurement by laser beam; sensitivity; fluctuations; gaseous samples; hot-noise limit; incident light; laser ellipsometry; light extinction ratio; light source intensity; magnetically-induced birefringence; magnetically-induced birefringence detection; noble gases; noise reduction technique; polarization state; sensitivity; systematic measurements; Birefringence; Ellipsometry; Extinction ratio; Gas lasers; Gases; Laser noise; Magnetic noise; Nitrogen; Noise reduction; Signal to noise ratio;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics, 1999. CLEO/Pacific Rim '99. The Pacific Rim Conference on

Conference_Location

Seoul, South Korea

Print_ISBN

0-7803-5661-6

Type

conf

DOI

10.1109/CLEOPR.1999.814798

Filename

814798