A Single-Mode, Diode-Pumped Lma Laser To Probe The Spin Orientation Of Ensembles Of 3he And 4he

L. Schearer (1) , S. Essabaa (1) , M. Leduc (2)

1 IPNO - Institut de Physique Nucléaire d'Orsay
2 LSH-ENS - Laboratoire de Spectroscopie Hertzienne de l'ENS

A diode-pumped Nd:Lanthanum Magnesium Hexaluminate laser was constructed which provides up to 15 mW of single-mode, tunable CW emission at 1083 nm. By appropriately polarizing the narrow-band laser emission (< 10 MHz), the laser can be used to determine the populations of the magnetic substates of the He ( 23S1) atoms. The laser is tuned to one of the absorption peaks of the helium metastable atom by tilting a thin (1 mm) solid, coated etalon placed inside the laser cavity and the absorption is measured. The relative absorption is used to determine the ensemble polarization ; the absolute absorption yields the metastable density.

Domaines: Articles anciens; Instrumentations et Détecteurs [physics.ins-det]

L. Schearer, S. Essabaa, M. Leduc. A Single-Mode, Diode-Pumped Lma Laser To Probe The Spin Orientation Of Ensembles Of 3he And 4he. International Conference Laser M2P 2, 1991, Grenoble, France. pp.C7-307-C7-310, ⟨10.1051/jp4:1991782⟩. ⟨jpa-00251025⟩