Coherence function measurement of a multimode laser by polarization holography

Author

Reményi, Judit ; Lorincz, Emoke

Author_Institution

Budapest Univ. of Technol. & Econ., Hungary

fYear

2003

fDate

22-27 June 2003

Firstpage

305

Abstract

In this paper, the temporal coherence function of a frequency-doubled multimode Nd:YAG laser (532 nm, 50 mW) has been investigated by measuring the diffraction efficiency of the polarization holographic gratings written by the laser in photoanisotropic polymer. The power spectrum of the laser-beam has also been measured by a grating spectrometer. From the measured spectrum the coherence function has been calculated. At the Fourier transformation measured spectrum has been approximated by a linear combination of three δ-function with different amplitudes.

Keywords

Fourier transform optics; anisotropic media; holographic gratings; laser beams; laser modes; laser variables measurement; light coherence; light polarisation; neodymium; optical harmonic generation; optical polymers; optical testing; solid lasers; visible spectrometers; 50 mW; 532 nm; Fourier transformation; YAG:Nd; YAl5O12:Nd; diffraction efficiency measurement; frequency-doubled multimode Nd:YAG laser; grating spectrometer; laser beam power spectrum; photoanisotropic polymer; polarization holographic gratings; polarization holography; temporal coherence function measurement; Coherence; Frequency measurement; Gratings; Holography; Laser beams; Optical diffraction; Optical polarization; Power lasers; Power measurement; Wavelength measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics Europe, 2003. CLEO/Europe. 2003 Conference on

Print_ISBN

0-7803-7734-6

Type

conf

DOI

10.1109/CLEOE.2003.1312366

Filename

1312366