Amplifier Systems
In addition to the main focus of our group: “generation of ultrashort pulses,” we aspire towards high power laser systems. To reach this aim we are doing research on in-house development of different amplifier concepts with higher repetition rates like a “rod-type fiber amplifier” which delivers 9 μJ pulses at 1 MHz repetition rate with a pulse duration of 420 fs in the infrared, or “optical parametric amplifiers” (OPAs). OPAs are a powerful tool to combine the generation of ultrashort pulses with the producing of high peak powers and high repetition rates.
Furthermore we are using commercially available amplifier systems like the Dragon system manufactured by KMLabs with a peak power of 80 GW, a Repetition rate of 1-10 kHz, and a pulse length of 30 fs or the Thales Alpha 10/CS-3TW system with a peak power of 3 TW, a repetition rate of 10 Hz, and a pulse length of 100 fs.
Commercial Systems:
High Repetition Rate Optical Parametric Amplifier (OPA)
Optical parametric amplifiers (OPAs) are a powerful tool for the generation of broadly wavelength tuneable ultrashort pulses of high peak power. So far OPAs have been pumped exclusively by amplified laser systems which have two severe disadvantages: Firstly, the repetition frequency of such systems is limited typically to several 100 kHz, and secondly they suffer from their complexity and high cost [more...]
High Power Femtosecond Ti:sapphire Laser Systems
In order to investigate laser-matter interaction high power laser systems are needed to provide laser pulses that can be focused to reach high intensities (I>1014 W/cm2). Thus laser pulses generated by femtosecond oscillators with typical energies of a few nanojoules have to be amplified. This amplification of the ultrashort pulses becomes complicated by the fact that even low pulse energies result in intensities that can cause damage of the optical laser components. [more...]
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