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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 32, Iss. 21 — Jul. 20, 1993
  • pp: 3948–3951

Mid-IR absorption in AgGaSe2 optical parametric oscillator crystals

G. C. Catella, L. R. Shiozawa, J. R. Hietanen, R. C. Eckardt, R. K. Route, R. S. Feigelson, D. G. Cooper, and C. L. Marquardt  »View Author Affiliations


Applied Optics, Vol. 32, Issue 21, pp. 3948-3951 (1993)
http://dx.doi.org/10.1364/AO.32.003948


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Abstract

We report new experimental results on the spectral, thermal, and orientational characteristics of stoichiometry-dependent mid-IR absorption in AgGaSe2 crystals. In currently available material, this absorption poses an obstacle to the power scaling of the 2-μm-pumped AgGaSe2 optical parametric oscillator (OPO). Preliminary experiments have indicated that this absorption could be substantially reduced by optimization of the process parameters during crystal growth and annealing. OPO output powers approaching 10 W may be achievable by using optimized material.

© 1993 Optical Society of America

History
Original Manuscript: January 15, 1993
Published: July 20, 1993

Citation
G. C. Catella, L. R. Shiozawa, J. R. Hietanen, R. C. Eckardt, R. K. Route, R. S. Feigelson, D. G. Cooper, and C. L. Marquardt, "Mid-IR absorption in AgGaSe2 optical parametric oscillator crystals," Appl. Opt. 32, 3948-3951 (1993)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-32-21-3948


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References

  1. R. C. Eckardt, Y. X. Fan, R. L. Byer, C. L. Marquardt, M. E. Storm, L. Esterowitz, “Broadly tunable infrared parametric oscillator using AgGaSe2,” Appl. Phys. Lett. 49, 608–610 (1986);G. J. Quarles, C. L. Marquardt, L. Esterowitz, “2 μm pumped AgGaSe2 with continuous tuning 2.49 –12.05 μm,” paper ELT7.1 presented at LEOS'90, Boston Mass., 1990. [CrossRef]
  2. P. A. Budni, M. G. Knights, E. P. Chicklis, K. L. Schepler, “High repetition rate AgGaSe2 optical parametric oscillator,” presented at 1992 Optical Society of American Annual Meeting, Albuquerque, N.M., 1992Opt. Lett., (to be published). [PubMed]
  3. C. L. Marquardt, D. G. Cooper, P. A. Budni, M. G. Knights, K. L. Schepler, R. DeDomenico, G. C. Catella, “Thermal lensing and power scaling of a AgGaSe2 OPO,” presented at 1992 Optical Society of American Annual Meeting, Albuquerque, N.M., 1992.
  4. J. D. Beasley, “Thermal conductivity of some novel nonlinear optical materials,” Appl. Opt. (to be published).
  5. For spectrum in ZnGeP2 see P. A. Budni, P. G. Schunemann, M. G. Knights, T. M. Pollak, E. P. Chicklis, “Efficient, high average power optical parametric oscillator using ZnGeP2,” in Advanced Solid-State Lasers, L. L. Chase, A. A. Pinto, eds., Vol. 13 of OSA Proceedings Series (Optical Society of America, Washington, D.C., 1992), pp.380–383;for general review of polarization effects see G. A. Medvedkin, Yu. V. Rud, M. A. Tairov, “Photoelectric anisotropy of II-IV-V2 ternary semiconductors,” Phys. Status Solidi A 115, 11–50 (1989).
  6. R. S. Feigelson, R. K. Route, “Recent developments in the growth of chalcopyrite crystals,” Opt. Eng. 26, 113–119 (1987).
  7. N. H. Kim, R. S. Feigelson, R. K. Route, “Surface migration and volume diffusion in the AgGaSe2-Ag2Se system,” J. Mater. Res. 7, 1215–1220 (1992). [CrossRef]
  8. The dependence of the polarized absorption spectrum on the aspect ratio has been explored most extensively in glasses, where the aspect ratio can be varied over a wide range by stretching or compressing a softened glass. See for example T. P. Seward, “Some unusual optical properties of elongated phases in glasses,” in The Physics of Non-Crystalline Solids, G. H. Frischat, ed. (Trans Tech Aedermannsdorf, Switzerland, 1977), pp. 342–347, and references cited therein.

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