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Compact diode-pumped 1.1 kW Yb:YAG Innoslab femtosecond amplifier

 
: Russbueldt, P.; Mans, T.; Weitenberg, J.; Hoffmann, H.D.; Poprawe, R.

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Optics Letters 35 (2010), No.24, pp.4169-4171
ISSN: 0146-9592
English
Journal Article
Fraunhofer ILT ()

Abstract
We demonstrate a compact diode-pumped Yb:KGW femtosecond oscillator-Yb:YAG Innoslab amplifier master oscillator power amplifier (MOPA) with nearly transform-limited 636 fs pulses at 620 W average output power, 20 MHz repetition rate, and beam quality of Mx2 = 1:43 and M y2 = 1:35. By cascading two amplifiers, we attain an average output power of 1:1 kW, a peak power of 80 MW, and a 615 fs pulse width in a single linearly polarized beam. The power-scalable MOPA is operated at room temperature, and no chirped-pulse amplification technique is used.

: http://publica.fraunhofer.de/documents/N-171062.html