相关实验视频

Updated: Jul 25, 2025

$Femtosecond Laser Filaments for Use in Sub-Diffraction-Limited Imaging and Remote Sensing$

Femtosecond Laser Filaments for Use in Sub-Diffraction-Limited Imaging and Remote Sensing

Published on: April 25, 2019

在全空间频率的集群重叠技术下,用于超精确的激光束图形的密度融化效应

Yichi Han, Songlin Wan, Xiaocong Peng

|June 29, 2023

概括

本研究介绍了用于超精密光学的二氧化碳激光束计算 (LBF). 控制材料的密度和融,可以精确地控制形状和粗度,提供高精度,低成本的制造方法.

科学领域:

光学制造业制造业光学制造业
材料科学材料科学材料科学
激光处理激光加工

背景情况:

超精确的计算对于先进的光学性能至关重要.
现有的方法在全空间频率误差趋同和压力管理方面面临挑战.
激光束图形 (LBF) 为高精度表面控制提供了一个有前途的替代方案.

研究的目的:

为了证明 CO2 LBF 的全空间频率误差趋同与微不足道的压力.
调查在LBF期间控制物质行为的物理机制.
开发新的加工策略,以提高精度和效率.

主要方法:

二氧化碳激光束计算 (LBF) 的开发和应用.
提出并验证"密度融化"效应来解释材料的行为.
集群重叠处理与工具影响函数 (TIF) 控制的实施.
通过不同脉冲持续时间对模拟结果的实验验证.

主要成果:

在不损害微尺度和纳米尺度粗度的情况下,实现了形式错误的显著减少 (RMS从0.009λ到0.003λ).
通过精确的参数管理,对材料沉降和表面光滑进行了有效的控制.
通过实验和模拟数据验证了"密度融化"效应和集群重叠处理.

结论:

CO2 LBF是一种实现超精密光学表面的可行技术.
"密度融化"效应为理解和控制LBF过程提供了一个框架.
集群重叠处理有效地抑制激光扫描波纹,减少数据量,使高精度,低成本的光学制造.

更多相关视频

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

Published on: January 28, 2019

Laser-induced Forward Transfer of Ag Nanopaste

Laser-induced Forward Transfer of Ag Nanopaste

Published on: March 31, 2016

相关概念视频

Confocal Fluorescence Microscopy

Confocal Fluorescence Microscopy

Confocal microscopy is an advanced microscopic technique. The prime advantage of the confocal microscope over other microscopy techniques is its ability to block the out-of-focus light from the illuminated samples using pinholes. It is widely used with fluorescence optics to obtain high-resolution, sharp contrast images. Unlike optical microscopes, confocal microscopes use a focused beam of light laser to scan the entire sample surface at different z-planes. These microscopes are, therefore,...

Super-resolution Fluorescence Microscopy

Super-resolution Fluorescence Microscopy

Super-resolution fluorescence microscopy (SRFM) provides a better resolution than conventional fluorescence microscopy by reducing the point spread function (PSF). PSF is the light intensity distribution from a point that causes it to appear blurred. Due to PSF, each fluorescing point appears bigger than its actual size, and it is the PSF interference of nearby fluorophores that causes the blurred image. Various approaches to achieving higher resolution through SRFM have recently been...