Imaging analysis of nanolithography based on surface-plasmon polariton

Wei Xiong; Xiaowei Guo; Jinglei Du; Xi Hou; Chunlei Du; Jun Yao

doi:10.1117/12.679079

30 August 2006 Imaging analysis of nanolithography based on surface-plasmon polariton

Wei Xiong, Xiaowei Guo, Jinglei Du, Xi Hou, Chunlei Du, Jun Yao

Proceedings Volume 6324, Plasmonics: Nanoimaging, Nanofabrication, and their Applications II; 632410 (2006) https://doi.org/10.1117/12.679079
Event: SPIE Optics + Photonics, 2006, San Diego, California, United States

Abstract

The continuing size reduction of integrated circuits to nano dimensions requires the development of advanced lithographic techniques. In order to obtain the desired feature sizes, it has become increasingly complex and high-cost to use the established methods of optical projection lithography at short optical wavelengths. Surface-plasmon polariton interference lithography (SPPIL) can provide a feasible way to achieve or approach the ultimate resolution for a certain wavelength without requiring complicated and expensive large numerical aperture optics. But it demands the fabrication of gratings with very fine period as a mask to realize contact printing, and the imaging quality is seriously dependent on the structure and materials of the mask, the illuminating light, photoresist, etc. So the optimization of the technological parameters is important to improve the imaging quality of nanolithography based on surface-plasmon polariton(SPP). In this paper, the simulation of near-field distribution of SPPIL is performed using Finite Difference Time Domain FDTD method, and the impacts of some technological conditions to the exposure field are analyzed including the polarization state and wavelength of the illuminating light, the periodicity, thickness and slit width of the mask, and so on. The simulation results show that, it is possible to fabricate good quality pattern with about 60nm features, with SPPIL using a 436nm-wavelength incident light.

Citation Download Citation

Wei Xiong, Xiaowei Guo, Jinglei Du, Xi Hou, Chunlei Du, and Jun Yao "Imaging analysis of nanolithography based on surface-plasmon polariton", Proc. SPIE 6324, Plasmonics: Nanoimaging, Nanofabrication, and their Applications II, 632410 (30 August 2006); https://doi.org/10.1117/12.679079

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KEYWORDS

Near field

Nanolithography

Photomasks

Polaritons

Metals

Near field optics

Finite-difference time-domain method

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