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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 37, Iss. 9 — Mar. 20, 1998
  • pp: 1635–1637

Thermal coefficients of the optical path length and refractive index in YAG

Tso Yee Fan and John L. Daneu  »View Author Affiliations


Applied Optics, Vol. 37, Issue 9, pp. 1635-1637 (1998)
http://dx.doi.org/10.1364/AO.37.001635


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Abstract

The changes in optical path length and refractive index with temperature are measured at 633 nm in undoped YAG in the 85–285 K temperature range. At 100 K the change in optical path length with temperature is only ∼25% of its value at 300 K; the change of refractive index with temperature is also substantially reduced at low temperatures.

© 1998 Optical Society of America

OCIS Codes
(140.0140) Lasers and laser optics : Lasers and laser optics
(140.3380) Lasers and laser optics : Laser materials
(140.3580) Lasers and laser optics : Lasers, solid-state
(140.6810) Lasers and laser optics : Thermal effects
(160.3380) Materials : Laser materials
(160.4760) Materials : Optical properties

History
Original Manuscript: June 24, 1997
Revised Manuscript: November 3, 1997
Published: March 20, 1998

Citation
Tso Yee Fan and John L. Daneu, "Thermal coefficients of the optical path length and refractive index in YAG," Appl. Opt. 37, 1635-1637 (1998)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-37-9-1635


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References

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  2. J. D. Foster, L. M. Osterink, “Index of refraction and expansion thermal coefficients of Nd:YAG,” Appl. Opt. 7, 2428–2429 (1968). [CrossRef] [PubMed]
  3. D. Taylor, “Thermal expansion data XI. Complex oxides, A2BO5, and the garnets,” Trans. J. Br. Ceram. Soc. 86, 1–6 (1987).
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  6. Note that in Refs. 4 and 5 the tabulated thermal expansion coefficients at low temperature are much larger than that given by the equation in Ref. 3 [Eq. (4) of this study], because the tabulated values were not calculated correctly in Refs. 4 and 5. They appear to have been calculated by use of the equation α(TC) = [a(TC) - a(0)]/TC, where TC is the temperature in degrees Celcius and a(TC) is the temperature-dependent lattice constant. This actually gives an estimate for α(TC/2) not α(TC) and consequently the tabulated values for the thermal expansion coefficient are too large.
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  9. D. D. Young, K. C. Jungling, T. L. Williamson, E. R. Nichols, “Holographic interferometry measurement of the thermal refractive index coefficient and the thermal expansion coefficient of Nd:YAG and Nd:YALO,” IEEE J. Quantum Electron. QE-8, 720–721 (1972). [CrossRef]
  10. O. S. Shchavelev, V. A. Babkina, Z. S. Mal’tseva, “Thermo-optic properties, expansion coefficient, and refractive index of yttrium aluminum garnet,” Sov. J. Opt. Technol. 40, 623–624 (1973).
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  12. L. G. DeShazer, S. C. Rand, B. A. Wechsler, “Laser crystals,” in CRC Handbook of Laser Science and Technology, Vol. 5, Pt. 3. Applications, Coatings, and Fabrication, M. J. Weber, ed. (CRC Press, Boca Raton, Fla., 1987), pp. 281–338.
  13. E. V. Zharikov, Yu. S. Privis, P. A. Studenikin, V. A. Chikov, V. D. Shigorin, I. A. Shcherbakov, “Temperaturewise measurements of refractive indices of rare-earth garnets,” Sov. Phys. Crystallogr. 34, 712–714 (1989).
  14. W. F. Krupke, M. D. Shinn, J. E. Marion, J. A. Caird, S. E. Stokowski, “Spectroscopic, optical, and thermomechanical properties of neodymium- and chromium-doped gadolinium scandium gallium garnet,” J. Opt. Soc. Am. B 3, 102–113 (1986). [CrossRef]
  15. A. A. Kaminskii, Laser Crystals: Physics and Properties (Springer-Verlag, Berlin, 1981), p. 351.

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