Marcus Zimmermann

Frequency Comparison of I2 Stabilized Lasers at 532 nm and Absolute Frequency Measurement of I2 Absorption Lines

Thomas Udem, Theodor W. Hänsch, S N Bagayev, 2002 .

Optical clockwork with an offset-free difference-frequency comb: accuracy of sum- and difference-frequency generation.

Thomas Udem, Ronald Holzwarth, T. Hänsch, 2004, Optics letters.

Few-cycle Laser Pulse Generation and its Applications

Thomas Udem, Theodor W. Hänsch, Ronald Holzwarth, 2004 .

In-Orbit Performance of the GRACE Follow-on Laser Ranging Interferometer.

Martin Gohlke, Reinhold Flatscher, Frank Heine, 2019, Physical review letters.

Optical clockworks and the measurement of laser frequencies with a mode-locked frequency comb

Theodor W. Hänsch, Ronald Holzwarth, T. Hänsch, 2001 .