Rapid Selective Ablation and High-Precision Patterning for Micro-Thermoelectric Devices Using Femtosecond Laser Directing Writing

2022 ◽  
Author(s):  
Jie Zhou ◽  
Wei Zhu ◽  
Yujie Xie ◽  
Yuedong Yu ◽  
Zhanpeng Guo ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
High Precision ◽  
Thermoelectric Devices ◽  
Selective Ablation

High-precision Method of Machining Taper Holes of Diesel Engine Nozzle with Femtosecond Laser

2014 ◽  
Vol 43 (4) ◽  
pp. 414003
Author(s):  
王锋 WANG Feng ◽  
罗建军 LUO Jian-jun ◽  
李明 LI Ming
Keyword(s):  
Diesel Engine ◽  
Femtosecond Laser ◽  
High Precision ◽  
Precision Method

REALIZATION OF HOLOGRAPHIC STORAGE ON METAL FILM BY FEMTOSECOND LASER PULSES MICROMACHINING

2009 ◽  
Vol 18 (04) ◽  
pp. 617-623
Author(s):  
ZHONGYI GUO ◽  
HAIFENG WANG ◽  
ZHENGJUN LIU ◽  
SHILIANG QU ◽  
JINGMIN DAI ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Metal Film ◽  
Amplitude Distribution ◽  
Laser Pulses ◽  
Femtosecond Laser Pulses ◽  
Phase Method ◽  
High Fidelity ◽  
Holographic Storage ◽  
Selective Ablation ◽  
The Fourier Transform

Optical information has been stored on the metal film by femtosecond laser pulses with the aid of the computer-generated hologram (CGH). The Fourier transform of an object is performed by a computer, and then the resulted complex amplitude distribution is encoded by the detour phase method. The resulted cell-oriented CGH is directly written on the metal film deposited on the glass substrate using femtosecond laser by selective ablation. The object wave has also been reconstructed with high fidelity by using a collimated He-Ne laser beam.

Investigation of Micro Holes Fabricated by Femtosecond Laser on S136

2015 ◽  
Vol 727-728 ◽  
pp. 205-208 ◽  
Author(s):  
Lei Zhang ◽  
Xiao Wen Cao ◽  
Deng Peng Huang ◽  
Dong Wei Ran ◽  
Shuo Tian ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
High Precision ◽  
Systematic Study ◽  
Laser Power ◽  
High Efficiency ◽  
Focal Length ◽  
Die Steel ◽  
Micro Holes ◽  
Focusing Lens ◽  
The Relationship

Femtosecond laser is now widely used in micro holes drilling because of its unique advantages, such as high efficiency, high precision and non-contact. Femtosecond laser is the best choice to fabricate micro holes. This paper makes a systematic study of the influence of laser power and number of pulses on diameter and depth of micro holes on S136 die steel through the focusing lens with focal length of 35 cm. A series of high-precision micro holes with different diameter and depth are fabricated. The relationship between the dimension of fabricated micro holes and the process parameters is determined.

scholarly journals High-precision measurement of terahertz frequency using an unstabilized femtosecond laser

2016 ◽  
Vol 65 (15) ◽  
pp. 150601
Author(s):  
Sun Qing ◽  
Yang Yi ◽  
Deng Yu-Qiang ◽  
Meng Fei ◽  
Zhao Kun
Keyword(s):  
Femtosecond Laser ◽  
High Precision ◽  
Precision Measurement ◽  
Terahertz Frequency ◽  
High Precision Measurement
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