Doppler cooling of buffer-gas-cooled barium monofluoride molecules

Doppler-free laser spectroscopy of buffer-gas- cooled molecular radicals

We demonstrate Doppler-free saturated absorption spectroscopy of cold molecular radicals formed by laser ablation inside a cryogenic buffer gas cell. By lowering the temperature, congested regions of the spectrum can be simplified, and by using different temperatures for different regions of the spectrum a wide range of rotational states can be studied optimally. We use the technique to study t...

A buffer-gas cooled Bose-Einstein condensate

We report the creation of a Bose-Einstein condensate using buffer-gas cooling, the first realization of BEC using a broadly general method which relies neither on laser cooling nor unique atom-surface properties. Metastable helium (He*) is buffer-gas cooled, magnetically trapped, and evaporatively cooled to quantum degeneracy. 10 atoms are initially trapped, leading to Bose-Einstein condensatio...

Buffer-gas cooled Bose-Einstein condensate.

We report the creation of a Bose-Einstein condensate using buffer-gas cooling, the first realization of Bose-Einstein condensation using a broadly general method which relies neither on laser cooling nor unique atom-surface properties. Metastable helium ((4)He*) is buffer-gas cooled, magnetically trapped, and evaporatively cooled to quantum degeneracy. 10(11) atoms are initially trapped, leadin...

Formation of van der Waals Molecules in Buffer-Gas-Cooled Magnetic Traps

Sensitivity and resolution in frequency comb spectroscopy of buffer gas cooled polyatomic molecules

spectroscopy [1, 2]. While the use of combs as frequency references is now ubiquitous, they can also be directly employed for optical spectroscopy using techniques known as direct frequency comb spectroscopy [3]. By coupling frequency combs to high-finesse optical cavities, cavityenhanced direct frequency comb spectroscopy (CE-DFCS) combines broad spectral bandwidth, high spectral resolution, a...