Diode-pumped Yb:LuAG and Yb:YAG disk laser amplifiers with high pulse energies

482

318

The use of ultra-high intensity laser beams to achieve extreme material states in the laboratory has become almost routine with the development of the petawatt laser. Petawatt class lasers have been constructed for specific research activities, including particle acceleration, inertial confinement fusion and radiation therapy, and for secondary source generation (x-rays, electrons, protons, neutrons and ions). They are also now routinely coupled, and synchronized, to other large scale facilities including megajoule scale lasers, ion and electron accelerators, x-ray sources and z-pinches. The authors of this paper have tried to compile a comprehensive overview of the current status of petawatt class lasers worldwide. The definition of 'petawatt class' in this context is a laser that delivers >200 TW.

Section: The Next Generationmentioning

confidence: 99%

Petawatt class lasers worldwide

Danson

Hillier

Hopps

et al. 2015

482

318

“…This approach is valid for other DPSSL amplifier architectures like the DIPOLE [10] and PEnELOPE [11] projects, where pumping takes place from both sides through the coolant.…”

Section: Discussionmentioning

confidence: 98%

Defining the optimal gradient doped :YAG disk for room and low temperature diode pumped solid-state laser operations

Chanteloup

Arzakantsyan

Marrazzo

2014

“…A commercial oscillator (Flint, Light Conversion) generates 65 fs long pulses at a repetition rate of 78 MHz and a pulse energy of about 10 nJ with the central wavelength at 1035 nm. Pulse picking down to 1 Hz and stretching to 10 ns hard clip (4.4 ns full width at half-maximum (FWHM)) is performed before entering a first set of amplifiers with a stretching factor of 200 ps/nm and a 50 nm hard clip [21] .…”

Section: Setup Descriptionmentioning

confidence: 99%

“…Notably two fully, direct laser diode-pumped laser projects are located in Germany: the Polaris laser system in Jena relies on ytterbium doped glass and calcium fluoride : [19, 20] , while the PE n ELOPE (Petawatt E n ergy Efficient Laser for Optical Plasma Experiments) laser project currently under development at the Helmholtz–Zentrum Dresden–Rossendorf uses the latter material alone [21] .…”

Section: Introductionmentioning

confidence: 99%

Performance demonstration of the PEnELOPE main amplifier HEPA I using broadband nanosecond pulses

Albach

Loeser

Siebold

et al. 2018

Self Cite

We report on the energetic and beam quality performance of the second to the last main amplifier section HEPA I of the PEnELOPE laser project. A polarization coupled double-12-pass scheme to verify the full amplification capacity of the last two amplifiers HEPA I and II was used. The small signal gain for a narrow-band continuous wave laser was 900 and 527 for a broadband nanosecond pulse, demonstrating 12.6 J of output pulse energy. Those pulses, being spectrally wide enough to support equivalent 150 fs long ultrashort pulses, are shown with an excellent spatial beam quality. A first active correction of the wavefront using a deformable mirror resulted in a Strehl ratio of 76% in the single-12-pass configuration for HEPA I.