Mid-IR femtosecond pulse generation on the microjoule level up to 5 mu m at high repetition rates

作者：Bradler Maximilian^*; Homann Christian; Riedle Eberhard

来源：Optics Letters, 2011, 36(21): 4212-4214.

We show efficient generation of mid-IR pulses tunable between 1 and 5 mu m from 100 kHz class femtosecond systems. The concept can be applied to various sources, particularly based on Ti:sapphire and the newly evolving Yb(+) lasers. The mid-IR pulses are generated as the idler of a collinear optical parametric amplifier pumped by the laser fundamental. The seed for this amplifier is the idler of a previous amplification stage pumped with the second harmonic and seeded with a visible continuum. This enhances the energy and allows us to influence the bandwidth of the final output. Pulses with microjoule energy and Fourier limits of 50 fs are achieved.

• 出版日期2011-11-1