We describe efficient soliton compression of femtosecond pulses by use of cascade quadratic nonlinearity and normal dispersion in quadratic media. Pulse compression by a factor of ∼3 is achieved in ∼30-mm-long beta-barium borate at a wavelength of 800 nm. We investigate the dependence of compression performance on phase mismatch, input intensity, and propagation length. The compressed pulses are fully characterized by use of the frequency-resolved optical gating method.
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Ashihara et al. (2002) studied this question.
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