Title :
Coherence function measurement of a multimode laser by polarization holography
Author :
Reményi, Judit ; Lorincz, Emoke
Author_Institution :
Budapest Univ. of Technol. & Econ., Hungary
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;
Conference_Titel :
Lasers and Electro-Optics Europe, 2003. CLEO/Europe. 2003 Conference on
Print_ISBN :
0-7803-7734-6
DOI :
10.1109/CLEOE.2003.1312366
