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

Bradler, M.; Homann, C. und Riedle, Eberhard (2011): Mid-IR femtosecond pulse generation on the microjoule level up to 5 μm at high repetition rates. In: Optics Letters, Bd. 36, Nr. 21: S. 4212-4214

Abstract

We show efficient generation of mid-IR pulses tunable between 1 and 5 μm 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.

• Dokumententyp: Zeitschriftenartikel
• Fakultät: Physik
• Themengebiete: 500 Naturwissenschaften und Mathematik > 530 Physik
• ISSN: 1539-4794
• Sprache: Englisch