OSA's Digital Library

Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 37, Iss. 9 — May. 1, 2012
  • pp: 1403–1405

Rapid assessment of mid-infrared refractive index anisotropy using a prism coupler: chemical vapor deposited ZnS

H. A. Qiao, Kristen A. Lipschultz, N. C. Anheier, and J. S. McCloy  »View Author Affiliations

Optics Letters, Vol. 37, Issue 9, pp. 1403-1405 (2012)

View Full Text Article

Enhanced HTML    Acrobat PDF (326 KB)

Browse Journals / Lookup Meetings

Browse by Journal and Year


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools



A state-of-the-art mid-infrared prism coupler was used to study suspected anisotropy in the refractive index of forward-looking-infrared grade chemical vapor deposited (CVD) zinc sulfide. Samples were prepared with columnar grain structure in and perpendicular to the sample plane, as well as from different depths in the CVD growth body. This study was motivated by the growing industry concern among optical design engineers, as well as developers of mid-infrared systems, over the reliability of historically accepted index data. Prior photoluminescence and x-ray diffraction measurements have suggested that refractive index may vary according to sample orientation with respect to the grain structure. Measurements were conducted to provide optical dispersion and thermal index (dn/dT) data at discrete laser wavelengths between 0.633 and 10.591 μm at two temperature set points (30 °C and 90 °C). Refractive index measurements between samples exhibited an average standard deviation comparable to the uncertainty of the prism coupler measurement (0.0004 refractive index units), suggesting that the variation in refractive index as a function of sample orientation and CVD deposition time is negligible and should have no impact on subsequent optical designs. Measured dispersion data at mid-infrared wavelengths were also found to agree well with prior published measurements.

© 2012 Optical Society of America

OCIS Codes
(120.3930) Instrumentation, measurement, and metrology : Metrological instrumentation
(120.6810) Instrumentation, measurement, and metrology : Thermal effects
(160.5320) Materials : Photorefractive materials
(260.2030) Physical optics : Dispersion
(260.3060) Physical optics : Infrared
(290.3030) Scattering : Index measurements

ToC Category:

Original Manuscript: December 23, 2011
Revised Manuscript: February 16, 2012
Manuscript Accepted: February 21, 2012
Published: April 19, 2012

H. A. Qiao, Kristen A. Lipschultz, N. C. Anheier, and J. S. McCloy, "Rapid assessment of mid-infrared refractive index anisotropy using a prism coupler: chemical vapor deposited ZnS," Opt. Lett. 37, 1403-1405 (2012)

Sort:  Author  |  Year  |  Journal  |  Reset  


  1. D. C. Harris, Materials for Infrared Windows and Domes: Properties and Performance (SPIE, 1999).
  2. J. Goela and R. L. Taylor, J. Mater. Sci. 23, 4331 (1988). [CrossRef]
  3. J. McCloy, R. Korenstein, and B. Zelinski, J. Am. Ceram. Soc. 92, 1725 (2009). [CrossRef]
  4. J. McCloy, E. Fest, R. Korenstein, and W. H. Poisl, Proc. SPIE 8016, 80160I (2011). [CrossRef]
  5. J. McCloy, “Properties and processing of chemical vapor deposited zinc sulfide,” Ph.D. dissertation (University of Arizona, 2008).
  6. N. C. Anheier and A. H. Qiao, Proc. SPIE 8016, 801614 (2011).
  7. N. Carlie, N. C. Anheier, H. A. Qiao, B. Bernacki, M. C. Phillips, L. Petit, J. D. Musgraves, and K. Richardson, Rev. Sci. Instrum. 82, 053103 (2011). [CrossRef]
  8. A. H. Qiao, N. C. Anheier, J. D. Musgraves, K. Richardson, and D. W. Hewak, Proc. SPIE 8016, 801613 (2011).
  9. J. McCloy, B. Riley, B. Johnson, M. Schweiger, H. A. Qiao, and N. Carlie, J. Am. Ceram. Soc. 93, 1650 (2010).
  10. H. H. Li, J. Phys. Chem. Ref. Data 13, 103 (1984). [CrossRef]
  11. M. Mell, Z. Phys. 16, 244 (1923). [CrossRef]
  12. A. Feldman, D. Horowitz, R. M. Waxler, and M. J. Dodge, NBS Tech. Note (U.S.) 993 (GPO, 1979).
  13. T. Zhou, J. Zhang, B. Hu, and H. Yang, Appl. Opt. 33, 13 (1994).
  14. Rohm and Haas Company, “CVD Zinc Sulfide,” http://www.dow.com/assets/attachments/business/gt/infrared_materials/cvd_zinc_sulfide/tds/cvd_zinc_sulfide.pdf (2008).

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.


Fig. 1. Fig. 2. Fig. 3.

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited