Besides serving as a frequency counter or clockwork, an optical frequency comb can be
used directly for spectroscopy, thus the name Direct Frequency Comb Spectroscopy (DFCS) …

Thanks to the advent of optical frequency comb synthesizers, based on femto-second mode-
locked lasers, the field of optical frequency metrology has experienced an extraordinary …

Direct digital synthesis in concert with an electro-optic phase modulator was employed to
generate optical frequency combs with tooth spacings as low as 100 Hz. These combs were …

Descriptions of coherent excitation of multi-state quantum systems model changes through
coupled ordinary differential equations that become more cumbersome as the number of …

We have experimentally demonstrated an ultra-dispersive optical prism made from a
coherently driven Rb atomic vapor. The prism possesses spectral angular dispersion that is …

We have theoretically demonstrated an enhanced Fizeau effect due to dragging the light that
occurs when the group velocity of light is ultraslow. The proposed experiment can be done …

A mode-locked femtosecond laser is used to physically map the laser frequency comb into
the velocity comb of the excited Rb atoms at room temperature. Upon resonant excitation by …

We measure the electromagnetically induced transparency (EIT) of a single-frequency comb
mode interacting with laser-cooled Rb87 atoms. A Λ hyperfine level structure in a D2 …

We investigate the excitation of an atomic degenerate-Λ system by a train of ultrashort
pulses. An iterative analytic solution to the optical Bloch equations is found describing the …

Induced transparency on a blue probe light in a Doppler broadened V-type mismatched
system using a low power near infrared coupling diode laser was experimentally observed …