X. P. Zhang

Efficient intracavity generation of visible pulses in a femtosecond near-infrared optical parametric oscillator.

H. Giessen, J. Kuhl, J. Hebling, 2001, Optics letters.

1-GHz repetition-rate femtosecond optical parametric oscillator

H. Giessen, A. Bartels, J. Hebling, 2002 .