Index profile of a planar microlens by ion exchange/diffusion

Abstract

For optimizing the diffusion condition in the fabrication of planar microlenses, it is important to simulate the distributed-index formation process. In this paper, a variable transformation is proposed to simplify the concentration-dependent diffusion equation and to remove the instability occurring in the numerical calculation. By using the transformation, the relationship between index profile and diffusion time is made clear. As a result of calculation, it is found that the index profile can be close to that of a Luneburg lens if a suitable diffusion coefficient is chosen.

© 1986 Optical Society of America

Distributed-index planar microlens and stacked planar optics: a review of progress

K. Iga and S. Misawa
Appl. Opt. 25(19) 3388-3396 (1986)

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Index profile simulation for a planar microlens by electromigration

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Distributed-index formation process in a planar microlens

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