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Electron Beam Processing of ZnGeP2: A Nonlinear Optical Material for the Infrared

  • P.G. Schunemann (a1), P.J. Drevinsky (a2), M.C. Ohmer (a3), W.C. Mitchel (a3) and N.C. Fernelius (a3)...

Abstract

Zinc germanium phosphide, an important frequency-conversion material for producing mid-infrared lasers, is plaqued by a detect-related absorption band extending from the fundamental edge (0.62 microns) to ∼3 microns. The level of absorption varies with melt composition, and can be reduced by post-growth annealing treatments. In these experiments, further reduction of the near-band-edge absorption was achieved by irradiating with 1-1.5 MeV electrons at cumulative fluence levels up to 2.75xlOI8cm2. Ge-rich, ZnP2-rich, and both as-grown and annealed stoichiometric crystals were studied. The near-edge absorption of the higher-loss, nonstoichiometric samples decreased monotonically with each subsequent irradiation, whereas the absorption in the lower-loss, stoichiometric samples was minimized after cumulative electron fluences of 2 x 10I8cnv2 and 1 x 10I8cm2 for as-grown and annealed material respectively. The minimum absorption coefficient achieved at 1/im was ∼4.4cnr’ in both stoichiometric samples, representing a factor two decrease for the as-grown crystal. Further exposure after reaching saturation served only to increase the losses at longer wavelengths.

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1 Schunemann, P.G., Budni, P.A., Knights, M.G., Pollak, T.M., Chicklis, E.P., and Marquardt, C.L., in OSA Proceedings on Advanced Solid State Lasers, Pinto, A. A. and Fan, T. Y., eds. (Opt. Soc. Am., Washington, DC 1993), Vol. 15, pp. 166168.
2 Boyd, G.D., Buehler, E., Storz, F.G., and Wernick, J.H., IEEE J. Quant. Elec. QE-8, 419 (1972).
3 Schunemann, P.G. and Pollak, T.M., in OSA Proceedings on Advanced Solid State Lasers, Dube, G. and Chase, L., eds. (Opt. Soc. Am., Washington, DC 1991), Vol. 10, pp. 332334.
4 P.A. Budni, , P.G. Schunemann, , Knights, M.G., Pollak, T.M., and Chicklis, E.P., in OSA Proceedings on Advanced Solid State Lasers, Chase, L. and Pinto, A.A., eds. (Opt. Soc. Am., Washington, DC 1992), Vol. 13, pp. 380383.
5 Brudnyi, V. N., Budnitskii, D.L., Krivov, M.A., Masagutova, R.V., Prochukhan, V.D., and Rud, Yu. V., Phys. Stat. Sol. A 50, 379 (1978).
6 Brudnyi, V. N., Novikov, V.A., and Popova, E.A., Izv. Vyssh. Ucheb. Zaved. Fiz. 8, 122 (1986).
7 Bhar, G.C., Samanta, L.K., Ghosh, D.K., and Das, S., Sov. J. Quant. Elect. 17, 860 (1987).
8 Rakowsky, M.H., Kuhn, W.K., Lauderdale, W.J., Halliburton, L.E., Edwards, G.J., Scripsick, M.P., Schunemann, P.G., Pollak, T.M., Ohmer, M.C., and Hopkins, F.K., Appl. Phys. Lett. 64 (13), 1615 (1994).
9 Rakowsky, M.H., Lauderdale, W.J., Mantz, R.A., Pandey, R., and Drevinsky, P.J., in this volume.

Electron Beam Processing of ZnGeP2: A Nonlinear Optical Material for the Infrared

  • P.G. Schunemann (a1), P.J. Drevinsky (a2), M.C. Ohmer (a3), W.C. Mitchel (a3) and N.C. Fernelius (a3)...

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