Dispersion effect in optical microscopy systems with a supersphere solid immersion lens

• 来源期刊: 中国物理B（英文版）
• 关键词: dispersion supersphere solid immersion lens microscopy
• 年，卷（期）: 2009,（7）
• 页码范围: 2788-2793
• 页数: 6页
• 语种: 英文

摘要

This paper studies the dispersion effect of the supersphere solid immersion lens (SIL) on a near field optical microscopy system by using the vector diffraction theory. Results show that when a real non-monochromatic beam illuminates a supersphere SIL microscopy, the dispersion effect of the SIL has an important influence on the image quality. As the wavelength bandwidth of the non-monochromatic beam increases, the size of the focused spot increases and its intensity decreases in near-field microscopy systems with a supersphere SIL.