Abstract

A variable-transmittance apodizing filter has been designed and demonstrated at 157 nm. The Gaussian transmission function is created by flowing oxygen gas, which is absorptive below 185 nm, between the two spherical surfaces of meniscus lenses. By varying the oxygen partial pressure, the degree of apodization can be controlled.

© 2005 Optical Society of America

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J. Opt. Soc. Am. A (2)

J. Vac. Sci. Technol. B (3)

V. Liberman, T. M. Bloomstein, M. Rothschild, J. H. C. Sedlacek, R. S. Uttaro, A. K. Bates, C. Van Peski, and K. Orvek, �??Materials issues for optical components and photomasks in 157 nm lithography,�?? J. Vac. Sci. Technol. B 17, 3273 (1999).
[CrossRef]

G. Owen, R. F. Pease, D. A. Markle, A. Grenville, R. L. Hsieh, R. von Bünau, and N. I. Maluf, �??1/8 infinitym optical lithography,�?? J. Vac. Sci. Technol. B 10, 3032 (1992).
[CrossRef]

R. von Bünau, G. Owen, and R. F. Pease, �??Depth of focus enhancement in optical lithography,�?? J. Vac. Sci. Technol. B 10, 3047 (1992).
[CrossRef]

Jet Propulsion Laboratory Publication (1)

W. B. DeMore, S. P. Sander, D. M. Golden, R. F. Hampson, M. J. Kurylo, C. J. Howard, A. R. Ravishankara, C. E. Kolb, and M. J. Molina, �??Chemical Kinetics and Photochemical Data for Use in Stratospheric Modeling, Evaluation Number 12,�?? Jet Propulsion Laboratory Publication 97-4, January 15, 1997.

Opt. Eng. (1)

S. J. Wein and W. L. Wolfe, �??Gaussian-apodized apertures and small-angle scatter measurement,�?? Opt. Eng. 28, 273 (1989).

Opt. Express (2)

Opt. Lett. (1)

Proc. SPIE (3)

P. Gräupner, A. Göhnermeier, M. Lowisch, R. Garreis, D. Flagello, S. Hansen, R. Socha, and C. Köhler, �??Solutions for printing sub 100nm contacts with ArF,�?? in Optical Microlithography VI, A. Yen ed., Proc. SPIE 4691, 503 (2002).

A. F. Kurtz and M. E. Harrigan, �??Gaussian beam apodization and application in a laser printer,�?? in Laser Beam Shaping, F. M. Dickey and S. C. Holswade, eds., Proc. SPIE 4095, 176 (2000).

S. J. Wein and W. L. Wolfe, �??A small-angle scatterometer,�?? in Stray Light and contamination in Optical Systems, R. Breault, ed., Proc. SPIE 967, 27 (1988).

Other (6)

P. Jacquinot and B. Roizen-Dossier, in Progress in Optics v. 3, ed. E. Wolf (Amsterdam, North Holland Publishing Company and New York, J. Wiley and Sons, 1964), pp. 29.

D. W. Wilson, P. D. Maker, J. T. Trauger, and T. B. Hull, �??Eclipse apodization: realization of occulting spots and Lyot masks,�?? in High-Contrast Imaging for Exo-Planet Detection, A. B. Schultz and R. G. Lyons, eds., Proc. SPIE 4860, 361 (2003).

M. E. MacDonald, D. P. Ryan-Howard, and E. C. Wack, �??Pupil apodization as a means of mitigating diffraction effects in remote sensing instruments,�?? in Earth Observing Systems VI, W. L. Barnes, ed., Proc. SPIE 4483, 258 (2002).

Hideo Okabe, Photochemistry of Small Molecules (Wiley, New York, 1978), pp. 162-268.

M. Born and E. Wolf, Principles of Optics (Pergamon Press, New York, 1965) pp. 511 and 435.

Peter Warneck, Chemistry of the Natural Atmosphere (Academic Press, New York, 1988), pg. 100.

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