Simultaneous material processing by picosecond-pulse bursts and nanosecond pulses arbitrarily generated by a directly modulated laser diode system

被引：2

作者：

Kurita, Takashi ^{[1
]}

Kawai, Kazuki ^{[1
]}

Morita, Takaaki ^{[1
]}

Iguchi, Takuto ^{[1
]}

Kato, Yoshinori ^{[1
]}

机构：

[1] Hamamatsu Photon KK, Nishi Ku, 1820 Kurematsu Cho, Hamamatsu, Shizuoka 4311202, Japan

来源：

OSA CONTINUUM | 2020年 / 3卷 / 06期

关键词：

D O I：

10.1364/OSAC.389818

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report a directly modulated laser diode system capable of generating picosecond-pulse bursts and nanosecond pulses simultaneously. A generated pulse shape can be arbitrary controlled with a temporal resolution of 1 ns and wavelength of 1064 nm. A two-stage Nd:YVO4 amplifier boosts the pulse energy to hundreds of microjoules to process JIS 304 stainless steel. Characterization of processed holes irradiated by different pulse durations and shapes reveals that the ablation efficiencies with the nanosecond pulses are two times higher than those with the picosecond-pulse bursts. A clear hole with a taper angle of 1.5 degrees is realized by the picosecond-pulse bursts with a 10-ns pulse interval. The combination of pulses with large differences in timescales offers an efficient production line with a single laser system. (C) 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

引用

页码：1711 / 1720

页数：10

共 5 条

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Zhang, Jie
Tao, Sha
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Zhao, Jay
LASER APPLICATIONS IN MICROELECTRONIC AND OPTOELECTRONIC MANUFACTURING (LAMOM) XXI, 2016, 9735
[2] New fiber lasers with temporal pulse shaping of nanosecond pulses for "Tailoring" flexible laser material processing
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Endert, H
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PHOTON PROCESSING IN MICROELECTRONICS AND PHOTONICS II, 2003, 4977 : 38 - 45
[3] 1.5 kW Burst of Picosecond Pulses with Scalable Energy and Average Power Generated by Diode Pumped Nd-laser System
Oreshkov, B.
Aleksandrov, V.
Iliev, H.
Trifonov, A.
Buchvarov, I.
2013 CONFERENCE ON LASERS AND ELECTRO-OPTICS EUROPE AND INTERNATIONAL QUANTUM ELECTRONICS CONFERENCE (CLEO EUROPE/IQEC), 2013,
[4] 18 W pulse-bursts 532 nm picosecond laser system with four equal amplitude and spacing pulses at 1 kHz
Ming Liang Long
Meng Chen
Gang Li
Applied Physics B, 2017, 123
[5] 18 W pulse-bursts 532 nm picosecond laser system with four equal amplitude and spacing pulses at 1 kHz
Long, Ming Liang
Chen, Meng
Li, Gang
APPLIED PHYSICS B-LASERS AND OPTICS, 2017, 123 (05):

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