Multipass OPCPA system at 100 kHz pumped by a CPA-free solid-state amplifier

Abstract

We present a compact few-cycle 100 kHz OPCPA system pumped by a CPA-free picosecond Nd:YVO₄ solid-state amplifier with all-optical synchronization to an ultra-broadband Ti:sapphire oscillator. This pump approach shows an exceptional conversion rate into the second harmonic of almost 78%. Efficient parametric amplification was realized by a two stage double-pass scheme with following chirped mirror compressor. The amount of superfluorescence was measured by an optical cross-correlation. Pulses with a duration of 8.7 fs at energies of 18 µJ are demonstrated. Due to the peak power of 1.26 GW, this simple OPCPA approach forms an ideal high repetition rate driving source for high-order harmonic generation.

Thin-disk pumped optical parametric chirped pulse amplifier delivering CEP-stable multi-mJ few-cycle pulses at 6 kHz

“…Taking into account the pulse compression of ~2•10 2 and a typical gain quenching factor of 6 [25], the final pulse contrast between main pulse and PSF pedestal is estimated to be ~6.6•10 4 . This value is comparable to other high gain OPCPA systems [26,11]. Figure 6 summarizes the output pulse characteristics of the 1.8 mJ output, measured with spectral phase interferometry (venteon SPIDER).…”

Generation and Parametric Amplification of Few‐Cycle Light Pulses at Relativistic Intensities

“…To allow for this measure, the vacuum chambers for the extended system have already been designed to accommodate another OPA crystal on a second layer. Simulations and experimental studies of pump recycling by other groups suggest an increase of the output energy by 50-70 % by this technique [107,156,157]. Therefore, an ultimate peak power of 90-120 TW might be achievable with the upgraded PFS system.…”

Table-top optical parametric chirped pulse amplifiers: past and present

“…Thire 168 Baudisch 164 Moses 123 Neuhaus 134 Pupeikis 135 Gu 122 Zou 171 Kurucz 169 Shumakova 175 Flender 170 Bigler 137 Schmidt 129 Yin 120 Ishii 118 Deng 126 Elu 166 Wang 178 Zou 171 Bridger 173 Hong 125 Fu 131 Xu 132 Rigaud 149 Mero 151 Shamir 138 Feng 128 Jargot 150 Tsai 148 Mücke 147 Budriunas 88 Hrisafov 107 Yang 77 Batysta 83 Kretschmar 90 Herrmann 75 Prinz 85 Witting 109 Witte 70 Prinz 105 Harth 101 Adachi 79 Kessel 78 Toth 89 Hädrich 96 Rothhardt 97 Adachi 81 Lu 110 J o u r n a l P r e -p r o o f this spectral range both spectral broadening and temporal compression could be accomplished within a single piece of solid-state material due to favorable interplay between self-phase modulation and anomalous group velocity dispersion, offering the advantages of technical simplicity and high energy through...…”