Abstract
High energy picosecond pulses at 2 μm wavelength are of importance for developing the next generation of ultrafast laser physics in the mid infrared [1] (mid-IR) spectral region as they permit pumping highly effective mid-IR nonlinear materials efficiently. Amongst many other applications, intense mid-IR few-cycle pulses are key for the development of atto- and zeptosecond science beyond the vacuum ultraviolet and into the soft X-ray regime [2]. Efficient generation of mid-IR pulses via OPCPA, however, requires resorting to non-oxide nonlinear crystals as OPA gain media which imposes for the pump laser to operate at wavelengths > 2 μm while meeting the strict requirements imposed on OPCPA pump lasers, a class of laser systems which are currently unavailable.
© 2015 IEEE
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