Title :
1083 nm ytterbium doped fibre amplifier for optical pumping of helium
Author :
Chernikov, S.V. ; Taylor, J.R. ; Platonov, N.S. ; Gapontsev, V.P. ; Tastevin, G. ; Leduc, M.
Author_Institution :
Femtosecond Opt. Group, Imperial Coll., London
fDate :
4/24/1997 12:00:00 AM
Abstract :
A combination of a narrow linewidth, tunable DBR diode laser and high power ytterbium fibre amplifier in a master oscillator power fibre amplifier (MOPFA) configuration is demonstrated for efficient optical pumping of helium. A compact and efficient diode pumped prototype system is shown to compare favourably with alternative laser sources for production of hyperpolarised 3He using direct pumping for medical application in MRI
Keywords :
biomedical NMR; distributed Bragg reflector lasers; fibre lasers; helium; laser tuning; light sources; optical pumping; semiconductor lasers; ytterbium; 1083 nm; He; MRI; Yb doped fibre amplifier; diode pumped prototype system; direct pumping; high power fibre amplifier; hyperpolarised 3He; laser sources; magnetic resonance imaging; master oscillator power fibre amplifier configuration; medical application; optical pumping; tunable DBR diode laser;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19970487
