Engineering the on-axis intensity of Bessel beam by a feedback tuning loop

Runze Li; Xianghua Yu; Yanlong Yang; Tong Peng; Baoli Yao; Chunmin Zhang; Tong Ye

doi:10.1117/12.2290358

23 February 2018 Engineering the on-axis intensity of Bessel beam by a feedback tuning loop

Runze Li, Xianghua Yu, Yanlong Yang, Tong Peng, Baoli Yao, Chunmin Zhang, Tong Ye

Proceedings Volume 10499, Three-Dimensional and Multidimensional Microscopy: Image Acquisition and Processing XXV; 1049921 (2018) https://doi.org/10.1117/12.2290358
Event: SPIE BiOS, 2018, San Francisco, California, United States

Abstract

The Bessel beam belongs to a typical class of non-diffractive optical fields that are characterized by their invariant focal profiles along the propagation direction. However, ideal Bessel beams only rigorously exist in theory; Bessel beams generated in the lab are quasi-Bessel beams with finite focal extensions and varying intensity profiles along the propagation axis. The ability to engineer the on-axis intensity profile to the desired shape is essential for many applications. Here we demonstrate an iterative optimization-based approach to engineering the on-axis intensity of Bessel beams. The genetic algorithm is used to demonstrate this approach. Starting with a traditional axicon phase mask, in the design process, the computed on-axis beam profile is fed into a feedback tuning loop of an iterative optimization process, which searches for an optimal radial phase distribution that can generate a generalized Bessel beam with the desired onaxis intensity profile. The experimental implementation involves a fine-tuning process that adjusts the originally targeted profile so that the optimization process can optimize the phase mask to yield an improved on-axis profile. Our proposed method has been demonstrated in engineering several zeroth-order Bessel beams with customized on-axis profiles. High accuracy and high energy throughput merit its use in many applications.

Citation Download Citation

Runze Li, Xianghua Yu, Yanlong Yang, Tong Peng, Baoli Yao, Chunmin Zhang, and Tong Ye "Engineering the on-axis intensity of Bessel beam by a feedback tuning loop", Proc. SPIE 10499, Three-Dimensional and Multidimensional Microscopy: Image Acquisition and Processing XXV, 1049921 (23 February 2018); https://doi.org/10.1117/12.2290358

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

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
9 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Bessel beams

Axicons

Spatial light modulators

Optimization (mathematics)

Modulation

Beam propagation method

Genetic algorithms

Show All Keywords

Keywords/Phrases

Search In:

Publication Years