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Related Experiment Video

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Optical data storage system with a planoellipsoidal solid immersion mirror illuminated directly by a point light

¹College of Physics and Electronic Information, Wenzhou University, Wenzhou, China. zhangyaoju@sohu.com

|November 23, 2006

Summary

A novel planoellipsoidal (PE) solid immersion mirror (SIM) simplifies optical storage systems. This PE SIM enhances near-field optical data storage by reducing components and improving focusing for compact, robust designs.

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Area of Science:

Optics and Photonics
Data Storage Technologies
Nanotechnology

Background:

Conventional solid immersion lens (SIL) systems for near-field optical storage involve multiple optical elements.
Existing systems face challenges with optical head unit size and potential contact with recording media.

Purpose of the Study:

To propose and develop a new planoellipsoidal (PE) solid immersion mirror (SIM) for near-field optical storage.
To simplify optical systems and enhance performance in compact data storage applications.

Main Methods:

Development of the planoellipsoidal (PE) solid immersion mirror (SIM) with an aperture at the apex.
Calculation of transmitted field intensity distribution using vector diffraction theory.

Main Results:

The PE SIM integrates the functions of a collimator, objective, and SIL, simplifying optical system assembly.
The PE SIM focuses light directly onto the recording layer, enabling compact optical data storage.
The convex ellipsoidal surface minimizes the risk of contact with the recording medium and reduces spot size spreading.

Conclusions:

The PE SIM offers a simplified and effective solution for near-field optical storage.
This design is suitable for developing compact optical data storage systems with improved robustness.