Nd:Glass Laser Design for Laser ICF Fission Energy (LIFE)

Caird, J. A.; Agrawal, Vivek; Bayramian, A.; Beach, Raymond; Britten, J A; Chen, Diana; Cross, Robert R.; Ebbers, Christopher A.; Erlandson, Alvin C.; Feit, Michael D.; Freitas, B.L.; Ghosh, Chuni; Haefner, C.; Homoelle, D.; Ladran, T.; Latkowski, J. F.; Molander, William A.; Murray, J. R.; Rubenchik, Sasha; Schaffers, Kathleen I.; Siders, C. W.; Stappaerts, E. A.; Sutton, S.B.; Telford, S.; Trenholme, John B.; Barty, C. P. J.

doi:10.13182/fst18-p8031

Cited by 28 publications

(14 citation statements)

References 18 publications

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“…Increase of the stored energy is also part of the solution because large gain media are becoming available thanks to ceramic developments. Nevertheless, when dealing with apertures of around 20 cm, well-known classical glass material can provide excellent results when it is associated with new amplifier designs, as has been published recently with Nd-doped phosphate glass [49,50] . At this stage, the best solution for demonstrating that it is possible to combine these efforts is to build a prototype.…”

Section: Diode-pumped Solid-state Lasers (Dpssls)mentioning

confidence: 99%

“…The last critical parameter for DPSSLs is the cost of laser diodes because only quasi-continuous mode operation (QCW) at low duty cycle (1%) is possible for this type of medium repetition rate (10)(11)(12)(13)(14)(15)(16)(17)(18)(19)(20). This excludes the possibility of using CW diodes for which the market is larger.…”

Section: Diode-pumped Solid-state Lasers (Dpssls)mentioning

confidence: 99%

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Challenges of high power diode-pumped lasers for fusion energy

Garrec

2014

High Pow Laser Sci Eng

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This paper reviews the different challenges that are encountered in the delivery of high power lasers as drivers for fusion energy. We will focus on diode-pumped solid-state lasers and we will highlight some of the main recent achievements when using ytterbium, cryogenic cooling and ceramic gain media. Apart from some existing fusion facilities and some military applications of diode-pumped solid-state lasers, we will show that diode-pumped solid-state lasers are scalable to inertial fusion energy (IFE)'s facility level and that the all-fiber laser scheme is very promising.

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Section: Diode-pumped Solid-state Lasers (Dpssls)mentioning

confidence: 99%

Section: Diode-pumped Solid-state Lasers (Dpssls)mentioning

confidence: 99%

Challenges of high power diode-pumped lasers for fusion energy

Garrec

2014

High Pow Laser Sci Eng

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“…In parallel with Mercury laser development, we created the preliminary conceptual design of a laser beamline for the Laser Inertial Fusion Energy (LIFE) application as shown in Figure 2 [7]. That system produces 12.5 kJ of 1 µm output energy continuously at a repetition rate of 13.3 Hz.…”

Section: Laser Systemmentioning

confidence: 99%

Laser Systems for Orbital Debris Removal

Rubenchik¹,

Barty²,

Beach³

et al. 2010

AIP Conference Proceedings

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Abstract. The use of a ground based laser for space debris cleaning was investigated by the ORION project in 1996. Since that study the greatest technological advance in the development of high energy pulsed laser systems has taken place within the NIF project at LLNL. The proposed next laser system to follow the NIF at LLNL will be a high rep rate version of the NIF based on diode-pumping rather than flashlamp excitation; the so called "LIFE" laser system. Because a single "LIFE" beamline could be built up in a few year time frame, and has performance characteristics relevant to the space debris clearing problem, such a beamline could enable a near term demonstration of space debris cleaning. Moreover, the specifics of debris cleaning make it possible to simplify the LIFE laser beyond what is required for a fusion drive laser, and so substantially reduce its cost. Starting with the requirements for laser intensity on the target, and then considering beam delivery, we will flow back the laser requirements needed for space debris cleaning. Using these derived requirements we will then optimize the pulse duration, the operational regime, and the output pulse energy of the laser with a focus of simplifying its overall design. Anticipated simplifications include operation in the heat capacity regime, eliminating cooling requirements on the laser gain slabs, and relaxing B-integral and birefrigence requirements.

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“…This kind of laser system cannot meet the requirements of inertial fusion energy (IFE). Therefore, it is necessary to develop a new type of laser driver for fusion that can work at a high repetition rate (typically 10-20 Hz) [7][8][9][10][11] .…”

Section: Introductionmentioning

confidence: 99%

Progress of the 10 J water-cooled Yb:YAG laser system in RCLF

Zheng¹,

Jiang²,

Xia³

et al. 2014

High Pow Laser Sci Eng

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The high repetition rate 10 J/10 ns Yb:YAG laser system and its key techniques are reported. The amplifiers in this system have a multi-pass V-shape structure and the heat in the amplifiers is removed by means of laminar water flow. In the main amplifier, the laser is four-pass, and an approximately 8.5 J/1 Hz/10 ns output is achieved in the primary test. The far-field of the output beam is approximately 10 times the diffraction limit. Because of the higher levels of amplified spontaneous emission (ASE) in the main amplifier, the output energy is lower than expected. At the end we discuss some measures that can improve the properties of the laser system.

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Nd:Glass Laser Design for Laser ICF Fission Energy (LIFE)

Cited by 28 publications

References 18 publications

Challenges of high power diode-pumped lasers for fusion energy

Challenges of high power diode-pumped lasers for fusion energy

Laser Systems for Orbital Debris Removal

Progress of the 10 J water-cooled Yb:YAG laser system in RCLF

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