Optical pumping and vibrational cooling of molecules

In the linear cavity configuration, with a loop mirror and a low reflectivity fiber Bragg grating, evolution of the laser line width and mode structure with launched pump power has

By removing the laser frequencies corresponding to the excitation of the v X = 0 level, we realize a dark state for the shaped femtosec- ond laser, leading to an accumulation of

It can be seen from this figure that a slightly different mean value is obtained for the measurements made with a Lorentzian shaped symme- tric curve (S) or with

Six Doppler-free re- sonances can be seen in Figure (4a) : they are associated with the three hyperfine components of the pumping transition and to the three corresponding

ground state for the metastable atoms having a velocity very different from the velocity in resonance. with

observable by diffusion of atoms out of the beam, quenching on the cell walls etc., and y~(v) denotes the rate of transfer of atomic ground state population. out

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This clock combines a distributed feedback (DFB) diode laser tuned on the Cs D 1 line (894.6 nm), a Mach-Zehnder electro- optic modulator (MZ EOM) driven by a local