Diffraction of cosine-Gaussian-correlated Schell-model beams

作者：Pan Liuzhan^*; Ding Chaoliang; Wang Haixia

来源：Optics Express, 2014, 22(10): 11670-11679.

DOI：10.1364/OE.22.011670

The expression of spectral density of cosine-Gaussian-correlated Schell-model (CGSM) beams diffracted by an aperture is derived, and used to study the changes in the spectral density distribution of CGSM beams upon propagation, where the effect of aperture diffraction is emphasized. It is shown that, comparing with that of GSM beams, the spectral density distribution of CGSM beams diffracted by an aperture has dip and shows dark hollow intensity distribution when the order-parameter n is big enough. The central intensity increases with increasing truncation parameter of aperture. The comparative study of spectral density distributions of CGSM beams with aperture and that of without aperture is performed. Furthermore, the effect of order-parameter n and spatial coherence of CGSM beams on the spectral density distribution is discussed in detail. The results obtained may be useful in optical particulate manipulation.

• 出版日期2014-5-19
• 单位洛阳师范学院