Development of diode‐pumped solid‐state laser HALNA for fusion reactor driver

Kawashima, Toshiyuki; Kanabe, T.; Matsumoto, Osamu; Yasuhara, Ryo; Furukawa, Hiroyuki; Miyamoto, Masahiro; Sekine, Takashi; Kitahara, Takashi; Kan, Hirofumi; Yamanaka, Masanobu; Nakatsuka, Masahiro; Izawa, Yasukazu

doi:10.1002/eej.20288

Cited by 6 publications

(1 citation statement)

References 12 publications

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“…To verify the above described simulation, a simple demonstration was performed using an output from the pre-amplifier of our recently upgraded HALNA laser system. 42,43) During this demonstration, as shown in Fig. 6, a ∼110-fs seed pulse centered at 1053 nm was generated by an in-house-developed Yb-doped fiber mode-locking oscillator.…”

Section: Experimental Demonstrationmentioning

confidence: 99%

Investigation of optical parametric fluorescence suppression with a quencher pulse in an optical parametric chirped-pulse amplification laser

Li¹,

Tomita²,

Uesu³

et al. 2017

Jpn. J. Appl. Phys.

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The mechanism of suppressing optical parametric fluorescence (OPF) with a quencher pulse in an optical parametric chirped-pulse amplification (OPCPA) laser is investigated. A simplified theoretical model of this phenomenon is presented, and numerical simulations and experimental demonstrations are performed for explanation and verification. The results show that, although the improvement of the temporal contrast usually is limited, the generation and amplification of the OPF in an OPCPA process does be suppressed by the injection of a quencher pulse, and the suppression capability can be slightly enhanced by increasing the quencher-pulse energy. We believe that this work will be helpful in designing high-peak-power lasers with high temporal contrast.

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Section: Experimental Demonstrationmentioning

confidence: 99%

Investigation of optical parametric fluorescence suppression with a quencher pulse in an optical parametric chirped-pulse amplification laser

Li¹,

Tomita²,

Uesu³

et al. 2017

Jpn. J. Appl. Phys.

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A Laser Technology Test Facility for Laser Inertial Fusion Energy (LIFE)

Bayramian

Campbell

Ebbers

et al. 2010

J. Phys.: Conf. Ser.

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A LIFE laser driver needs to be designed and operated which meets the rigorous requirements of the NIF laser system while operating at high average power, and operate for a lifetime of >30 years. Ignition on NIF will serve to demonstrate laser driver functionality, operation of the Mercury laser system at LLNL demonstrates the ability of a diode-pumped solid-state laser to run at high average power, but the operational lifetime >30 yrs remains to be proven. A Laser Technology test Facility (LTF) has been designed to specifically address this issue. The LTF is a 100-Hz diode-pumped solid-state laser system intended for accelerated testing of the diodes, gain media, optics, frequency converters and final optics, providing system statistics for billion shot class tests. These statistics will be utilized for material and technology development as well as economic and reliability models for LIFE laser drivers.

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Optimal design of ultrahigh-energy laser amplifier chain with high storage energy extraction

Liu

Hong

et al. 2013

Appl. Opt.

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This paper presents the concept of constant-fluence amplification. It refers to the fact that laser fluence anywhere in the amplifier gain medium is identical to the design fluence E(design), which represents the maximum allowed fluence in consideration of the laser-induced damage threshold (LIDT). Based on this concept, we explore ideal amplifier model (IAM) and near-ideal amplifier chain (NIAC) and propose an optimal NIAC design method and analytically offer an indicator of the extraction efficiency. Finally, the paper discusses the influences of losses on the NIAC's extraction efficiency.

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Development of diode‐pumped solid‐state laser HALNA for fusion reactor driver

Cited by 6 publications

References 12 publications

Investigation of optical parametric fluorescence suppression with a quencher pulse in an optical parametric chirped-pulse amplification laser

Investigation of optical parametric fluorescence suppression with a quencher pulse in an optical parametric chirped-pulse amplification laser

A Laser Technology Test Facility for Laser Inertial Fusion Energy (LIFE)

Optimal design of ultrahigh-energy laser amplifier chain with high storage energy extraction

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