Acta Optica Sinica, Volume. 41, Issue 4, 0426001(2021)
Diffraction and Collimation Characteristics of Small Light Fields with Planar Wavefronts
Based on the Huygens-Fresnel principle, spatial frequency spectrum theory, and the law of energy conservation, we derive an inclination factor of the integral formula for far-field diffraction from a small diffractive source with a planar wavefront and provide an expression to calculate the light field distribution on the far-field hemispherical surface. Then, according to the characteristics of the wavefront transformation of a collimating objective satisfying the sine condition, a calculation formula is recommended for a collimating light field from a small diffractive source with a planar wavefront. Furthermore, applications of this formula are shown through the transformation characteristics of Gaussian beams of simple rectangular coordinate polarization and simple cylindrical coordinate polarization.
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Fuyuan Guo, Lianhuang Li, Hua Zheng. Diffraction and Collimation Characteristics of Small Light Fields with Planar Wavefronts[J]. Acta Optica Sinica, 2021, 41(4): 0426001
Category: Physical Optics
Received: Aug. 24, 2020
Accepted: Sep. 25, 2020
Published Online: Feb. 26, 2021
The Author Email: Guo Fuyuan (guofy@fjnu.edu.cn)