Refractive Optical Reshaper that Converts a Laser Gaussian Beam to a Flat-Top Beam

Jianli, 尚建力 Shang; Xiao, 朱晓 Zhu; Chen, Peng; Guangzhi, 朱广志 Zhu; Wei, 王伟 Wang; Songqing, 任松青 Ren; Qiong, 严琼 Yan

doi:10.3788/cjl20103710.2543

Cited by 2 publications

(1 citation statement)

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“…In the fast axis direction, the divergence angle is typically 40°~50°, the beam quality is close to the diffraction limit and the energy distribution is consistent with a single-Gaussian-mode. In the slow axis direction, the divergence angle is generally 10°~15°, and the width of the luminous area is often greater than the minimum width of the fundamental mode, showing a horizontal multi-mode [Shang et al 2010].…”

Section: The Simulations Of Attop Beam Shaping and Ber Couplingmentioning

confidence: 99%

Uniformization and collimation of a high-power blue EESLD

Luo

Geng

et al. 2023

Preprint

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Delivering the highest power among the visible diodes, semiconductor lasers at 450 nm have been extensively applied in biomedical and micro-processing fields. However, the edge-emitting inherence that gives birth to the divergent and ununiform profile largely prohibits the practice due to the fiber coupling and pumping difficulty. To address these challenges, we propose and demonstrate a scheme that is both robust and cost-effective. A laser spot with 3×3 mm2 profile, 0.86 mrad divergence and 87.28% uniformity is experimentally achieved. Further simulation reveals that the coupling efficiency into a S460-HP single-mode fiber by a 20-mm focus-lens can reach 58.35%.

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Section: The Simulations Of Attop Beam Shaping and Ber Couplingmentioning

confidence: 99%

Uniformization and collimation of a high-power blue EESLD

Luo

Geng

et al. 2023

Preprint

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Flat-Top Line-Shaped Beam Shaping and System Design

Guo

2022

Sensors

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In this study, the circular Gaussian spot emitted by a laser light source is shaped into a rectangular flat-top beam to improve the scanning efficiency of a selective laser sintering scanning system. A CO2 laser with a power of 200 W, wavelength of 10.6 μm, and spot diameter of 9 mm is shaped into a flat-top spot with a length and width of 0.5 × 0.1 mm, and the mapping function and flat-top Lorentzian function are calculated. We utilize ZEMAX to optimize the aspherical cylindrical lens of the shaping system and the cylindrical lens of the focusing system. We then calculate the energy uniformity of the flat-top line-shaped beam at distances from 500 to 535 mm and study the zoom displacement of the focusing lens system. The results indicated that the energy uniformity of the flat-top beam was greater than 80% at the distances considered, and the focusing system must precisely control the displacement of the cylindrical lens in the Y-direction to achieve precise zooming.

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Refractive Optical Reshaper that Converts a Laser Gaussian Beam to a Flat-Top Beam

Cited by 2 publications

References 0 publications

Uniformization and collimation of a high-power blue EESLD

Uniformization and collimation of a high-power blue EESLD

Flat-Top Line-Shaped Beam Shaping and System Design

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