Abstract
Sources of tunable mid-infrared (mid-IR) ultrashort pulses are of great interest for use in various applications, ranging from vibrational spectroscopy via trace-gas detection to high-field science. Difference frequency mixing (DFG) of near-IR sources offers straightforward single-pass geometries and relativ high conversion efficiencies to generate mid-IR pulses. This is the first time such a compact mid-IR source has been demonstrated. In addition, DFG of two pulses with the same but arbitrary carrier-envelope-offset (CEO) [1] frequency fluctuations delivers intrinsically phase-stable output pulses which will be interesting for chirped pulse optical parametric amplification (CPOPA) and single attosecond pulse generation.
© 2007 IEEE
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