Abstract
We report on room temperature quasi-cw laser action in K5Nd(MoO4)4 at a wavelength of 1.067 μm. The crystal was pumped with the 5140 Å line of an argon ion laser. Due to thermal effects actual cw lasing was not possible. Chopping the pump light with a low duty cycle of 1∶1000 leads to quasi-cw laser action and stable output power. We have determined the fundamental laser parameters: threshold pump powerA T=15 mW, slope efficiency η=22%, and internal lossesL=2.5%. In order to explain the measured relaxation oscillations, diffusion of the excited 4f-excitons is considered. According to a recently developed theory, a diffusion constant ofD=2×10−6cm2/s explains the observed results.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
A.A. Kaminskii, S.E. Sarkisov, J. Bohm, P. Reiche, D. Schultze, R. Uecker: Phys. Stat. Sol. (a)43, 71 (1977)
H.-D. Hattendorff, W. Lenth, J. Liebertz, H.G. Danielmeyer: To be published
P.V. Klevtsov, L.P. Kozeeva, V.I. Protasova, L. Yu. Kharchenko, L.A. Glinskaya, R.F. Kletsova, V.V. Bakakin: Sov. Phys. Crystallogr.20, 31 (1975)
G. Huber, W. Lenth, J. Liebertz, F. Lutz: J. Luminescence16, 353 (1978)
H.G. Danielmeyer: “Stoichiometric Laser Materials”, inFestkörperprobleme XV (Advances in Solid State Physics), ed. by H.J. Queisser (Pergamon-Vieweg, Braunschweig 1975)
S.R. Chinn, H.Y.-P. Hong: Opt. Commun.15, 345 (1975)
T. Yamada, K. Otsuka, J. Nakano: J. Appl. Phys.45, 5096 (1974)
H.G. Danielmeyer: “Progress in Nd: YAG Lasers”, inLasers: A Series of Advances., Vol. IV, ed by A.K. Levine, A. De Maria (Marcel Dekker Inc., New York 1975)
G. Huber, G. Weber: To be published
K. Otsuka: IEEE J. QE-13, 520 (1977)
H.G. Danielmeyer, M. Blätte: Appl. Phys.1, 269 (1973)
G. Huber, W. W. Krühler, W. Bludau, H.G. Danielmeyer: J. Appl. Phys.46, 3580 (1975)