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Design of high-performance supersphere solid immersion lenses.
1College of Physics and Electronic Information, Wenzhou University, China. zhangyaoju@sohu.com
Applied Optics
|June 27, 2006
Summary
Novel high-performance supersphere solid immersion lenses (HPSILs) enhance optical system performance by improving spot quality and focal depth without increasing spot size. These HPSILs offer advancements for near-field optical data storage and photolithography applications.
Area of Science:
- Optics and Photonics
- Nanotechnology
Background:
- Near-field optical systems are crucial for high-resolution applications like data storage and lithography.
- Standard solid immersion lenses (SILs) have limitations in improving optical performance metrics.
Purpose of the Study:
- To design and theoretically investigate novel high-performance supersphere solid immersion lenses (HPSILs).
- To evaluate the potential of HPSILs in enhancing optical system characteristics for advanced applications.
Main Methods:
- Theoretical investigation using vector diffraction theory.
- Design of two novel HPSIL configurations.
Main Results:
- HPSILs demonstrate improved Strehl ratio of the focused spot.
- Increased focal depth in near-field optical systems is achieved with HPSILs.
- Spot size and sidelobe intensity remain comparable to standard Weierstrass SILs.
Conclusions:
- HPSILs offer significant advantages over standard SILs for near-field optics.
- The developed HPSILs are promising for applications in near-field optical data storage and photolithography.