Source laser intense pour le refroidissement du 87Rb par doublement de fréquence d'un laser fibré télécom

Paul-Eric Pottie (1) , Laurent Longchambon (1) , Julien Delaporte (1) , Rémi Desbuquois (1) , Thomas Liennard (1) , Vincent Lorent (1) , Hélène Perrin (2)

1 LPL - Laboratoire de Physique des Lasers
2 Condensat de Bose-Einstein

We built a frequency-doubled laser for 87Rb laser cooling, from a Telecom fiber laser. Thanks to intense technological development, telecom fiber lasers exhibit outstanding properties regarding relative intensity noise and modulation bandwidth. The enhanced doubling efficiency of periodically poled crystals allowed to obtain up to 1.8 W at 780 nm from 10 W at 1560 nm, with a simple pass configuration in a 50-mm long crystal of ppLN:MgO. This technique can also be applied at the wavelength of potassium (767 nm) (Bourdel, 2009) and could be of great interest for the realization of dipole traps.

Domaines: Optique [physics.optics]

Paul-Eric Pottie, Laurent Longchambon, Julien Delaporte, Rémi Desbuquois, Thomas Liennard, et al.. Source laser intense pour le refroidissement du 87Rb par doublement de fréquence d'un laser fibré télécom. 2010. ⟨hal-00456218⟩