Abstract
We report on room-temperature cw laser action of Er3+: Yttrium-aluminum-garnet (YAG) and Er3+: Yttrium-gallium-garnet (YGG) crystals at 1.64 μm. The laser operates from the metastable4 I 13/2 manifold into an upper Stark level of the4 I 15/2 ground-state manifold of Er3+. Due to reabsorption losses, the Er3+ concentration of the laser crystals must be low. Laser pumping at a wavelength of 647.1 nm yields lowest thresholds around 30 mW and slope efficiencies up to 12.7% for Er:YAG. Laser operation in Er:YGG is achieved with higher thresholds of about 200 mW and smaller slope efficiencies of 0.9%. The effective emission cross section in YAG is estimated to be σe≈5×10−21 cm2.
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References
A.A. Kaminskii:Laser Crystals, Springer Ser. Opt. Sci. (Springer, Berlin, Heidelberg 1981)
L.F. Johnson, J.E. Geusic, L.G. van Uitert: Appl. Phys. Lett.7, 127–128 (1965)
K.O. White, S.A. Schleusener: Appl. Phys. Lett.21, 419–420 (1972)
G.M. Zverev, V.M. Garmash, A.M. Onishchenko, V.A. Pashkov, A.A. Semenov, Yu.M. Kolbetskov, A.I. Smirnov: Zh. Prikl. Spektrosk.21, 820–823 (1974) [English transl.: J. Appl. Spectrosc. (USSR)21, 1467–1469 (1974)]
L. Reekie, I.M. Jauncey, S.B. Poole, D.N. Payne: Electron. Lett.23, 1076–1078 (1987)
C.A. Millar, I.D. Miller, B.I. Ainslie, S.P. Craig, J.P. Armitage: Electron. Lett.23, 865–866 (1987)
E. Heumann, M. Ledig, D. Ehrt, W. Seeber, E.W. Duczynski, H.-J. v. Heide, G. Huber: Appl. Phys. Lett.52, 255–256 (1988)
D.C. Hanna, A. Kazer, D.P. Shepherd: Opt. Commun.63, 417–420 (1987)
E.W. Duczynski, G. Huber, K. Petermann, H. Stange: Topical Meeting on Tunable Solid State Lasers, Technical Digest Series, Vol.20, 197–198 (1987), ed. by the Optical Society of America, Washington, D.C.
M.K. Ashurov, Y.K. Voronko, V.V. Osiko, A.A. Sobol, M.I. Timoshechkin: Phys. Stat. Solidi (a)42, 101–110 (1977)
A.A. Kaminskii, T.I. Butaeva, U.A. Fedorov, K.S. Bagdasarov, A.G. Petrosyan: Phys. Stat. Solidi (a)39, 541–548 (1977)
J. Rubin, A. Brenier, R. Moncorge, C. Pedrini: J. Lumin.36, 39–47 (1986)
J.P. van der Ziel, L.G. Van Uitert, W.H. Grodkiewicz, R.M. Mikulyak: J. Appl. Phys.60, 4262–4267 (1986)
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Dedicated to Prof. Dr. Herbert Welling on the occasion of his 60th birthday