Abstract

A traditional Shack-Hartmann wavefront sensor (SHWS) uses a physical microlens array to sample the incoming wavefront into a number of segments and to measure the phase profile over the cross section of a given light beam. We customized a digital SHWS by encoding a spatial light modulator (SLM) with a diffractive optical lens (DOL) pattern to function as a diffractive optical microlens array. This SHWS can offer great flexibility for various applications. Through fast-Fourier-transform (FFT) analysis and experimental investigation, we studied three sampling methods to generate the digitized DOL pattern, and we compared the results. By analyzing the diffraction efficiency of the DOL and the microstructure of the SLM, we proposed three important strategies for the proper implementation of DOLs and DOL arrays with a SLM. Experiments demonstrated that these design rules were necessary and sufficient for generating an efficient DOL and DOL array with a SLM.

© 2006 Optical Society of America

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  1. B. C. Platt and R. Shack, "History and principles of Shack-Hartmann wavefront sensing," J. Refract. Surg. 17, 573-577 (2001).
  2. See http://holoeye.com/ (accessed on 31 May 2005).
  3. H. P. Herzig, Micro-optics, Elements, Systems and Applications (Taylor & Francis, 1997), pp. 19-23.
  4. J. R. Leger and M. P. Griswold, "Binary-optics miniature Talbot cavities for laser beam addition," Appl. Phys. Lett. 56, 4-6 (1990).
    [CrossRef]
  5. J. Jahns and S. J. Walker, "Two-dimensional array of diffractive microlens fabrication by thin film deposition," Appl. Opt. 29, 931-936 (1990).
  6. W. C. Sweat, "Describing holographic and optical elements as lenses," J. Opt. Soc. Am. 67, 803-808 (1977).
  7. E. Hecht, Optics, 2nd ed. (Addison-Wesley, 1990), pp. 424-426.

2001

B. C. Platt and R. Shack, "History and principles of Shack-Hartmann wavefront sensing," J. Refract. Surg. 17, 573-577 (2001).

1990

J. R. Leger and M. P. Griswold, "Binary-optics miniature Talbot cavities for laser beam addition," Appl. Phys. Lett. 56, 4-6 (1990).
[CrossRef]

J. Jahns and S. J. Walker, "Two-dimensional array of diffractive microlens fabrication by thin film deposition," Appl. Opt. 29, 931-936 (1990).

1977

Griswold, M. P.

J. R. Leger and M. P. Griswold, "Binary-optics miniature Talbot cavities for laser beam addition," Appl. Phys. Lett. 56, 4-6 (1990).
[CrossRef]

Hecht, E.

E. Hecht, Optics, 2nd ed. (Addison-Wesley, 1990), pp. 424-426.

Herzig, H. P.

H. P. Herzig, Micro-optics, Elements, Systems and Applications (Taylor & Francis, 1997), pp. 19-23.

Jahns, J.

Leger, J. R.

J. R. Leger and M. P. Griswold, "Binary-optics miniature Talbot cavities for laser beam addition," Appl. Phys. Lett. 56, 4-6 (1990).
[CrossRef]

Platt, B. C.

B. C. Platt and R. Shack, "History and principles of Shack-Hartmann wavefront sensing," J. Refract. Surg. 17, 573-577 (2001).

Shack, R.

B. C. Platt and R. Shack, "History and principles of Shack-Hartmann wavefront sensing," J. Refract. Surg. 17, 573-577 (2001).

Sweat, W. C.

Walker, S. J.

Appl. Opt.

Appl. Phys. Lett.

J. R. Leger and M. P. Griswold, "Binary-optics miniature Talbot cavities for laser beam addition," Appl. Phys. Lett. 56, 4-6 (1990).
[CrossRef]

J. Opt. Soc. Am.

J. Refract. Surg.

B. C. Platt and R. Shack, "History and principles of Shack-Hartmann wavefront sensing," J. Refract. Surg. 17, 573-577 (2001).

Other

See http://holoeye.com/ (accessed on 31 May 2005).

H. P. Herzig, Micro-optics, Elements, Systems and Applications (Taylor & Francis, 1997), pp. 19-23.

E. Hecht, Optics, 2nd ed. (Addison-Wesley, 1990), pp. 424-426.

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