Wolf effect: the experiment with a variable aperture

Akhmedzhanov, I.М., Baranov, D.V., Usievich, B.A., Tikhonevich O.V.

For Russian citation (Opticheskii Zhurnal):

Ахмеджанов И.М., Баранов Д.В., Тихоневич О.В., Усиевич Б.А. Эффект Вольфа: эксперимент с изменяемой апертурой // Оптический журнал. 2025. Т. 92. № 12. С. 106–110. http://doi.org/10.17586/1023-5086-2025-92-12-106-110

Akhmedzhanov I.M., Baranov D.V., Tikhonevich O.V., Usievich B.A. Wolf effect: the experiment with a variable aperture [in Russian] // Opticheskii Zhurnal. 2025. V. 92. № 12. P. 106–110. http://doi.org/10.17586/1023-5086-2025-92-12-107-110

For citation (Journal of Optical Technology):

Abstract:

The Wolf effect has been experimentally investigated for the first time in an optical scheme with a variable slit aperture. The dependence of the radiation spectrum in the far zone on the normalized aperture size has been obtained. The normalized aperture size characterizes the degree of spatial coherence of the optical field on the aperture; normalization is performed on the effective correlation length of the light on the aperture. For two different types of visible light sources, the measured maximum blueshift of the radiation spectrum was about 20 nm when the normalized aperture size changed from 0 to 1. The features in the dependence of the spectrum shift were found, which can be interpreted as the effect of spectral switching in the far zone.

Keywords:

Wolf effect, coherence, optical spectrum, spectral switch

OCIS codes: 030.1640, 050.1220, 300.6170

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