Experimental investigation of the closest parallel pulses in holographic femtosecond laser processing

被引：22
|
作者：
Hayasaki, Yoshio [1 ,2 ]
Nishitani, Maki [2 ]
Takahashi, Hidetomo [2 ]
Yamamoto, Hirotsugu [2 ]
Takita, Akihiro [1 ]
Suzuki, Daichi [1 ]
Hasegawa, Satoshi [1 ]
机构：
[1] Utsunomiya Univ, Ctr Opt Res & Educ, Utsunomiya, Tochigi 3218585, Japan
[2] Univ Tokushima, Inst Sci & Technol, Tokushima 7708506, Japan
来源：
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING | 2012年 / 107卷 / 02期
关键词：
SPATIAL-FREQUENCY RESPONSE; LIGHT-MODULATOR; WAVE-GUIDES; FABRICATION; COMPENSATION; GLASS; RESOLUTION; SPLITTER; ABLATION; OPTICS;
D O I：
10.1007/s00339-012-6801-1
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In holographic femtosecond laser processing, diffractive parallel pulses are distorted by phase discontinuities and mutual interference between the neighborhoods in the reconstructed image of a Fourier computer-generated hologram when the interval is smaller than the beam diameter. We investigated holographic fabrication on a glass surface using parallel pulses with different intervals. We found the closest parallel pulses with sufficient separation to avoid mutual interference in holographic femtosecond laser processing. The minimum interval was 2.8 times larger than the diffracted beam diameter. The experimental results were also supported by a computer simulation. Our findings will be very useful in the design of holographic laser processing systems.
引用
收藏
页码：357 / 362
页数：6
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