Design of diffractive optical elements for beam shaping in near Fresnel diffraction domain

Weidong Qu; Huarong Gu; Qiaofeng Tan

doi:10.1117/12.2036184

23 December 2013 Design of diffractive optical elements for beam shaping in near Fresnel diffraction domain

Weidong Qu, Huarong Gu, Qiaofeng Tan

Proceedings Volume 9043, 2013 International Conference on Optical Instruments and Technology: Optoelectronic Devices and Optical Signal Processing; 90430S (2013) https://doi.org/10.1117/12.2036184
Event: International Conference on Optical Instruments and Technology (OIT2013), 2013, Beijing, China

Abstract

Fast optimization algorithms of the design of diffractive optical elements (DOEs) for beam shaping are often based on fast Fourier transform (FFT), and the demand of the sampling theorem must be met when FFT is used to calculate the light intensity. Limited by the fabricating technology, the pixel size of a DOE cannot be too small. For beam shaping in Fresnel diffraction domain, given that the sampling interval of a DOE is fixed, if the diffraction distance is too short, all FFT algorithms would not meet the demand of the sampling theorem, and then the results of beam shaping would become worse. In this paper, the disadvantages of the FFT algorithms in near Fresnel diffraction domain are discussed, and an area division method is proposed for the DOEs design. The simulation and experimental results show the validity of the proposed area division method.

Citation Download Citation

Weidong Qu, Huarong Gu, and Qiaofeng Tan "Design of diffractive optical elements for beam shaping in near Fresnel diffraction domain", Proc. SPIE 9043, 2013 International Conference on Optical Instruments and Technology: Optoelectronic Devices and Optical Signal Processing, 90430S (23 December 2013); https://doi.org/10.1117/12.2036184

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available