Sub-20-fs tunable pulses in the visible and NIR by noncollinear optical parametric amplification (NOPA)

Lochbrunner, Stefan; Wilhelm, T.; Piel, J.; Spörlein, S. und Riedle, Eberhard (1999): Sub-20-fs tunable pulses in the visible and NIR by noncollinear optical parametric amplification (NOPA). Advanced Solid-State Lasers, Boston, Massachusetts, United States, 31 January–3 February 1999. Fejer, M. M.; Injeyan, H. und Keller, U. (Hrsg.): Trends in Optics and Photonics. Bd. 26, Nr. TuA4 Optical Society of America. S. 366-371

Abstract

Generation of tunable sub-20-fs visible pulses is demonstrated by optical parametric amplification of a white light continuum in a 2 mm thick BBO crystal. The necessary broad amplification bandwidth is ensured by noncollinear type I phase matching. The proper angle between the seed light and the second harmonic of the Ti:sapphire pump light leads to an effective matching of the signal and idler group velocities. Above the degeneracy point this is not possible in the type I arrangement but it is shown that type II phase matching can be used instead to produce similarly short pulses in the NIR.

• Dokumententyp: Konferenzbeitrag (Paper)
• Fakultät: Physik
• Themengebiete: 500 Naturwissenschaften und Mathematik > 530 Physik
• ISSN: 1094-5695
• Sprache: Englisch