Abstract

We propose and demonstrate high-quality generation of a uniform multispot pattern (MSP) by using a spatial light modulator with adaptive feedback. The method iteratively updates a computer generated hologram (CGH) using correction coefficients to improve the intensity distribution of the generated MSP in the optical system. Thanks to a simple method of determining the correction coefficients, the computational cost for optimizing the CGH is low, while maintaining high uniformity of the generated MSP. We demonstrate the generation of a 28×28 square-aligned MSP with high uniformity. Additionally, the proposed method could generate an MSP with a gradually varying intensity profile, as well as a uniform MSP consisting of more than 1000 spots arranged in an arbitrary pattern.

© 2012 Optical Society of America

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References

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2011 (1)

2010 (2)

2008 (1)

2007 (3)

T. Inoue, H. Tanaka, N. Fukuchi, M. Takumi, N. Matsumoto, T. Hara, N. Yoshida, Y. Igasaki, and Y. Kobayashi, Proc. SPIE 6487, 64870Y (2007).
[CrossRef]

R. D. Leonardo, F. Ianni, and G. Ruocco, Opt. Express 15, 1913 (2007).
[CrossRef]

H. Takahashi, S. Hasegawa, and Y. Hayasaki, Appl. Opt. 46, 5917 (2007).
[CrossRef]

2005 (1)

Y. Hayasaki, T. Sugimoto, A. Takita, and N. Nishida, Appl. Phys. Lett. 87, 031101 (2005).
[CrossRef]

2004 (1)

O. Ripoll, V. Kettunen, and H. P. Herzig, Opt. Eng. 43, 2549 (2004).
[CrossRef]

2003 (1)

D. G. Grier, Nature 424, 810 (2003).
[CrossRef]

1997 (1)

N. Yoshikawa, M. Itoh, and T. Yatagai, Opt. Rev. 4, A161 (1997).
[CrossRef]

1992 (2)

1990 (1)

Ando, T.

Colyer, R. A.

Cova, S.

Dändliker, R.

Fukuchi, N.

N. Matsumoto, T. Ando, T. Inoue, Y. Ohtake, N. Fukuchi, and T. Hara, J. Opt. Soc. Am. A 25, 1642 (2008).
[CrossRef]

T. Inoue, H. Tanaka, N. Fukuchi, M. Takumi, N. Matsumoto, T. Hara, N. Yoshida, Y. Igasaki, and Y. Kobayashi, Proc. SPIE 6487, 64870Y (2007).
[CrossRef]

Gale, M. T.

Ghioni, M.

Grier, D. G.

D. G. Grier, Nature 424, 810 (2003).
[CrossRef]

Gulinatti, A.

Hara, T.

N. Matsumoto, T. Ando, T. Inoue, Y. Ohtake, N. Fukuchi, and T. Hara, J. Opt. Soc. Am. A 25, 1642 (2008).
[CrossRef]

T. Inoue, H. Tanaka, N. Fukuchi, M. Takumi, N. Matsumoto, T. Hara, N. Yoshida, Y. Igasaki, and Y. Kobayashi, Proc. SPIE 6487, 64870Y (2007).
[CrossRef]

Hasegawa, S.

Hayasaki, Y.

Herzig, H. P.

Hirao, K.

Ianni, F.

Igasaki, Y.

T. Inoue, H. Tanaka, N. Fukuchi, M. Takumi, N. Matsumoto, T. Hara, N. Yoshida, Y. Igasaki, and Y. Kobayashi, Proc. SPIE 6487, 64870Y (2007).
[CrossRef]

Inoue, T.

N. Matsumoto, T. Ando, T. Inoue, Y. Ohtake, N. Fukuchi, and T. Hara, J. Opt. Soc. Am. A 25, 1642 (2008).
[CrossRef]

T. Inoue, H. Tanaka, N. Fukuchi, M. Takumi, N. Matsumoto, T. Hara, N. Yoshida, Y. Igasaki, and Y. Kobayashi, Proc. SPIE 6487, 64870Y (2007).
[CrossRef]

Itoh, M.

N. Yoshikawa, M. Itoh, and T. Yatagai, Opt. Rev. 4, A161 (1997).
[CrossRef]

Kettunen, V.

O. Ripoll, V. Kettunen, and H. P. Herzig, Opt. Eng. 43, 2549 (2004).
[CrossRef]

Kobayashi, Y.

T. Inoue, H. Tanaka, N. Fukuchi, M. Takumi, N. Matsumoto, T. Hara, N. Yoshida, Y. Igasaki, and Y. Kobayashi, Proc. SPIE 6487, 64870Y (2007).
[CrossRef]

Leonardo, R. D.

Mahlab, U.

Matsumoto, N.

N. Matsumoto, T. Ando, T. Inoue, Y. Ohtake, N. Fukuchi, and T. Hara, J. Opt. Soc. Am. A 25, 1642 (2008).
[CrossRef]

T. Inoue, H. Tanaka, N. Fukuchi, M. Takumi, N. Matsumoto, T. Hara, N. Yoshida, Y. Igasaki, and Y. Kobayashi, Proc. SPIE 6487, 64870Y (2007).
[CrossRef]

Michalet, X.

Miura, K.

Nishida, N.

Y. Hayasaki, T. Sugimoto, A. Takita, and N. Nishida, Appl. Phys. Lett. 87, 031101 (2005).
[CrossRef]

Ohtake, Y.

Prongué, D.

Rech, I.

Ripoll, O.

O. Ripoll, V. Kettunen, and H. P. Herzig, Opt. Eng. 43, 2549 (2004).
[CrossRef]

Rosen, J.

Ruocco, G.

Sakakura, M.

Sawano, T.

Scalia, G.

Shamir, J.

Shimotsuma, Y.

Shiv, L.

Stein, J.

Sugimoto, T.

Y. Hayasaki, T. Sugimoto, A. Takita, and N. Nishida, Appl. Phys. Lett. 87, 031101 (2005).
[CrossRef]

Takahashi, H.

Takita, A.

Y. Hayasaki, T. Sugimoto, A. Takita, and N. Nishida, Appl. Phys. Lett. 87, 031101 (2005).
[CrossRef]

Takumi, M.

T. Inoue, H. Tanaka, N. Fukuchi, M. Takumi, N. Matsumoto, T. Hara, N. Yoshida, Y. Igasaki, and Y. Kobayashi, Proc. SPIE 6487, 64870Y (2007).
[CrossRef]

Tanaka, H.

T. Inoue, H. Tanaka, N. Fukuchi, M. Takumi, N. Matsumoto, T. Hara, N. Yoshida, Y. Igasaki, and Y. Kobayashi, Proc. SPIE 6487, 64870Y (2007).
[CrossRef]

Weiss, S.

Yatagai, T.

N. Yoshikawa, M. Itoh, and T. Yatagai, Opt. Rev. 4, A161 (1997).
[CrossRef]

Yoshida, N.

T. Inoue, H. Tanaka, N. Fukuchi, M. Takumi, N. Matsumoto, T. Hara, N. Yoshida, Y. Igasaki, and Y. Kobayashi, Proc. SPIE 6487, 64870Y (2007).
[CrossRef]

Yoshikawa, N.

N. Yoshikawa, M. Itoh, and T. Yatagai, Opt. Rev. 4, A161 (1997).
[CrossRef]

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Figures (4)

Fig. 1.
Fig. 1.

Block diagram of the proposed method: (a)  outer iteration and (b) inner iteration. Parameters in dashed boxes are stored in memory.

Fig. 2.
Fig. 2.

Observed 28×28 square-aligned MSP obtained by applying (a) the present method and (b) the conventional OC method. (c) Relation between the number of adaptive feedback iterations and the diffraction efficiency.

Fig. 3.
Fig. 3.

(a) 10×10 square-aligned MSP whose intensity distribution varies in the row direction, (b) magnified view, and (c) differences between the designed and measured spot intensities along the dashed line in (a).

Fig. 4.
Fig. 4.

(a) Observed characters “LCOS SLM” composed of 1442 points and (b) magnified view around character “C.”

Equations (4)

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v(k)(m)=v(k1)(m)I(k)(m)/I(k1)(m),
Tl(k)(m)=v(k)(m)wl(k)(m)Tgoal(m),
σ=m=1M[I(m)Idesired]2/M,
η=(ImaxImin)/(2Idesired),

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