Applied Physics B

, 97:561

Femtosecond continuum generation in bulk laser host materials with sub-μJ pump pulses

Authors

    • Lehrstuhl für BioMolekulare OptikLudwig-Maximilians-Universität München
  • P. Baum
    • Lehrstuhl für BioMolekulare OptikLudwig-Maximilians-Universität München
  • E. Riedle
    • Lehrstuhl für BioMolekulare OptikLudwig-Maximilians-Universität München
Article

DOI: 10.1007/s00340-009-3699-1

Cite this article as:
Bradler, M., Baum, P. & Riedle, E. Appl. Phys. B (2009) 97: 561. doi:10.1007/s00340-009-3699-1

Abstract

We report a comprehensive investigation of femtosecond continuum generation in single crystals of several common laser host materials. The absolute spectral energy density, pulse-to-pulse stability, pump threshold, and beam profile are studied in dependence on the focusing conditions, crystal thickness, pump pulse energy, and pump wavelength (775–1600 nm). Continuum generation is shown at repetition rates of up to 80 MHz and for pump pulse durations of up to 350 fs. In yttrium aluminum garnet (YAG), yttrium vanadate (YVO4), gadolinium vanadate (GdVO4), and potassium-gadolinium tungstate (KGW) thresholds below 50 nJ, plateau-like visible and infrared spectra, and higher infrared photon flux as compared to conventional materials like sapphire are found. We discuss the particular advantages of these materials for application in parametric amplification, femtosecond spectroscopy, and carrier-envelope phase stabilization.

PACS

42.25.Dd42.65.Jx42.65.Ky42.65.Re

Copyright information

© Springer-Verlag 2009