Ultrafast thin-disk multipass laser amplifier delivering 1.4 kW (4.7 mJ, 1030 nm) average power converted to 820 W at 515 nm and 234 W at 343 nm

被引：151

作者：

Negel, Jan-Philipp ^{[1
]}

Loescher, Andre ^{[1
]}

Voss, Andreas ^{[1
]}

Bauer, Dominik ^{[2
]}

Sutter, Dirk ^{[2
]}

Killi, Alexander ^{[2
]}

Ahmed, Marwan Abdou ^{[1
]}

Graf, Thomas ^{[1
]}

机构：

[1] Univ Stuttgart, Inst Strahlwerkzeuge IFSW, D-70569 Stuttgart, Germany

[2] TRUMPF Laser GmbH, D-78713 Schramberg, Germany

来源：

OPTICS EXPRESS | 2015年 / 23卷 / 16期

关键词：

OUTPUT POWER; PULSE ENERGY; OSCILLATOR; QUALITY;

D O I：

10.1364/OE.23.021064

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report on an Yb:YAG thin-disk multipass laser amplifier delivering sub-8 ps pulses at a wavelength of 1030 nm with 1420 W of average output power and 4.7 mJ of pulse energy. The amplifier is seeded by a regenerative amplifier delivering 6.5 ps pulses with 300 kHz of repetition rate and an average power of 115 W. The optical efficiency of the multipass amplifier was measured to be 48% and the beam quality factor was better than M-2 = 1.4. Furthermore we report on the external second harmonic generation from 1030 nm to 515 nm using an LBO crystal leading to an output power of 820 W with 2.7 mJ of energy per pulse. This corresponds to a conversion efficiency of 70%. Additionally, 234 W of average power were obtained at the third harmonic with a wavelength of 343 nm. (C) 2015 Optical Society of America

引用

页码：21064 / 21077

页数：14

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