High-speed ultrafast laser machining with tertiary beam positioning (Conference Presentation)

2017 ◽  
Author(s):  
Chuan Yang ◽  
Haibin Zhang
Keyword(s):  
High Speed ◽  
Ultrafast Laser ◽  
Laser Machining

Ultrafast laser machining: process optimization and applications

2021 ◽  
Author(s):  
Norman Hodgson ◽  
Albrecht Steinkopff ◽  
Sebastian Heming ◽  
Hortense Allegre ◽  
Hatim Haloui ◽  
...  
Keyword(s):  
Process Optimization ◽  
Ultrafast Laser ◽  
Machining Process ◽  
Laser Machining

High speed ultrafast laser surface processing (Conference Presentation)

2017 ◽  
Author(s):  
Girolamo Mincuzzi ◽  
Rainer Kling ◽  
John Lopez ◽  
Clemens Hönninger ◽  
Eric Audouard ◽  
...  
Keyword(s):  
High Speed ◽  
Ultrafast Laser ◽  
Laser Surface ◽  
Surface Processing

Effect of Optical Properties Characteristic Polymethylmethacrylate Using UV Laser Direct-Structuring

2014 ◽  
Vol 939 ◽  
pp. 230-236
Author(s):  
Chien Kai Chung ◽  
Wen Tse Hsaio ◽  
Shih Feng Tseng ◽  
Kuo Cheng Huang ◽  
Ming Fei Chen
Keyword(s):  
High Speed ◽  
Pulse Repetition Frequency ◽  
Laser System ◽  
3D Structure ◽  
Optical Quality ◽  
Light Transmittance ◽  
Laser Source ◽  
Laser Machining ◽  
Uv Laser ◽  
Machining Quality

Polymethylmethacrylate (PMMA) material has excellent characteristics, such as being light weight, low cost, ease of machining, and optical quality, which are useful in numerous applications such as backlit LCD display panels, lens optics, and other photoelectric fields. Laser machining of polymerization material results in a superior machining quality, high accuracy, high speed, and high reproducibility, produces a small variety of products, reduces mold costs, and enables the rapid manufacture of products based on complex graphics by processing different depths and widths of the 3D structure. This paper presents the fabrication of symmetrical array microstructures on PMMA material by using a UV laser system. The PMMA material dimensions and thickness were 20 x 20 mm and 1 mm, respectively. Regarding the machining quality, the laser pulse energy, pulse repetition frequency, and fill spacing were adjusted. For the experiments, a semiconductor laser source (635 nm/5 mW/TEM00) and a beam profiler were used to measure the characteristics of a laser beam passing through the microstructures. The microstructure pitches and morphologies also affected the light uniformity. After laser machining, the surface morphology and the light transmittance were measured using a spectrophotometer.

scholarly journals High-speed flow microscopy using compressed sensing with ultrafast laser pulses

2015 ◽  
Vol 23 (8) ◽  
pp. 10521 ◽  
Author(s):  
Bryan T. Bosworth ◽  
Jasper R. Stroud ◽  
Dung N. Tran ◽  
Trac D. Tran ◽  
Sang Chin ◽  
...  
Keyword(s):  
Compressed Sensing ◽  
High Speed ◽  
Laser Pulses ◽  
Ultrafast Laser ◽  
High Speed Flow ◽  
Ultrafast Laser Pulses ◽  
Speed Flow

scholarly journals A 5-mm piezo-scanning fiber device for high speed ultrafast laser microsurgery

2014 ◽  
Vol 5 (7) ◽  
pp. 2023 ◽  
Author(s):  
Onur Ferhanoglu ◽  
Murat Yildirim ◽  
Kaushik Subramanian ◽  
Adela Ben-Yakar
Keyword(s):  
High Speed ◽  
Ultrafast Laser ◽  
Laser Microsurgery ◽  
Scanning Fiber

Ultrafast laser machining of tapered microchannels in glass and PDMS

2012 ◽  
Vol 50 (2) ◽  
pp. 210-214 ◽  
Author(s):  
Samira Darvishi ◽  
Thomas Cubaud ◽  
Jon P. Longtin
Keyword(s):  
Ultrafast Laser ◽  
Laser Machining

Ultrafast laser machining of porcine sclera

2015 ◽  
Author(s):  
W. S. Góra ◽  
R. M. Carter ◽  
B. Dhillon ◽  
D. P. Hand ◽  
J. D. Shephard
Keyword(s):  
Ultrafast Laser ◽  
Laser Machining

Observation Of Laser Machining Process By High Speed Holography

1983 ◽  
Author(s):  
T. Uyemura ◽  
S. Ozono ◽  
Y. Yamamoto, ◽  
N. Yokoyama ◽  
J Kato ◽  
...  
Keyword(s):  
High Speed ◽  
Machining Process ◽  
Laser Machining

Bubble Formation in the Underwater Laser Ablation of Silicon

2016 ◽  
Vol 835 ◽  
pp. 144-148 ◽  
Author(s):  
Wisan Charee ◽  
Viboon Tangwarodomnukun ◽  
Chaiya Dumkum
Keyword(s):  
Laser Beam ◽  
High Speed ◽  
Bubble Formation ◽  
Laser Pulses ◽  
Machining Process ◽  
Laser Machining ◽  
Dynamic Features ◽  
Workpiece Material ◽  
Work Surface ◽  
Underwater Laser

Thermal damage of workpiece material induced by laser machining process can be reduced by using the underwater technique. This method requies the whole workpiece to be submerged in water while a laser beam strikes the work surface for ablation. Though water can cool the workpiece during the ablation, the dynamic features of water can adversely interfere the laser beam. The vapor bubbles created in water can scatter the laser beam and in turn attenuate the laser intensity at the work surface so as the ablation performance. In this paper, the bubble formation caused by laser machining of silicon in water was investigated and analyzed. The shadowgraph technique associated with the high speed camera was used to capture and measure the vapor bubble in water. The bubble size was found to increase with the laser pulse energy. After a number of laser pulses irradiated on the workpiece surface, the bubble was broken up into small ones which can significantly disturb the laser beam so as the ablation performance.

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