Optical pumping of helium with arc lamp excited LNA lasers

Carl C. G. Aminoff (1) , C. Larat (1) , M. Leduc (1) , F. Laloë (1)

1 LSH-ENS - Laboratoire de Spectroscopie Hertzienne de l'ENS

We have developed a compact and relatively inexpensive laser source at λ =1.083 μm, suitable for optical pumping in helium. The laser is made of an LNA crystal transversely pumped by krypton arc lamps. A cw power of 800 mW has been achieved at 1.083 μm with a 3 GHz bandwidth. A 66 % nuclear polarization has been obtained in a 3He gas.

Mots clés: helium; lanthanum compounds; neodymium compounds; solid lasers; arc lamp excited LNA lasers; optical pumping; CW power; nuclear polarization; sup 3 He gas; 1.083 micron; 800 mW; 3 GHz; He; Kr; La sub 1 x Nd sub x MgAl sub 11 O sub 19

Domaines: Articles anciens; Mécanique statistique [cond-mat.stat-mech]

Carl C. G. Aminoff, C. Larat, M. Leduc, F. Laloë. Optical pumping of helium with arc lamp excited LNA lasers. Revue de Physique Appliquée, 1989, 24 (8), pp.827-831. ⟨10.1051/rphysap:01989002408082700⟩. ⟨jpa-00246105⟩