![Applied Sciences | Free Full-Text | Influence of Numerical Aperture on Molten Area Formation in Fusion Micro-Welding of Glass by Picosecond Pulsed Laser Applied Sciences | Free Full-Text | Influence of Numerical Aperture on Molten Area Formation in Fusion Micro-Welding of Glass by Picosecond Pulsed Laser](https://www.mdpi.com/applsci/applsci-09-01412/article_deploy/html/images/applsci-09-01412-g005.png)
Applied Sciences | Free Full-Text | Influence of Numerical Aperture on Molten Area Formation in Fusion Micro-Welding of Glass by Picosecond Pulsed Laser
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Numerical aperture, explained by RP Photonics Encyclopedia; NA, optical fiber, lens, objective, acceptance angle
![Applied Sciences | Free Full-Text | Influence of Numerical Aperture on Molten Area Formation in Fusion Micro-Welding of Glass by Picosecond Pulsed Laser Applied Sciences | Free Full-Text | Influence of Numerical Aperture on Molten Area Formation in Fusion Micro-Welding of Glass by Picosecond Pulsed Laser](https://www.mdpi.com/applsci/applsci-09-01412/article_deploy/html/images/applsci-09-01412-g002.png)
Applied Sciences | Free Full-Text | Influence of Numerical Aperture on Molten Area Formation in Fusion Micro-Welding of Glass by Picosecond Pulsed Laser
![Numerical aperture, explained by RP Photonics Encyclopedia; NA, optical fiber, lens, objective, acceptance angle Numerical aperture, explained by RP Photonics Encyclopedia; NA, optical fiber, lens, objective, acceptance angle](https://www.rp-photonics.com/img/mode_divergence1.png)
Numerical aperture, explained by RP Photonics Encyclopedia; NA, optical fiber, lens, objective, acceptance angle
![a) The large numerical aperture is the key for minimizing the focal... | Download Scientific Diagram a) The large numerical aperture is the key for minimizing the focal... | Download Scientific Diagram](https://www.researchgate.net/publication/317685831/figure/fig1/AS:507249437429760@1497949098080/a-The-large-numerical-aperture-is-the-key-for-minimizing-the-focal-volume-which-leads.png)