21 April 2006 Light propagation in a GRIN microlens with gain or loss and comparison with lossless case
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Abstract
The correspondence between the linear integral transform and the ray-transfer matrix of a diffraction-free first-order optical system is used to describe the ray trajectory and to study the point spread function (PSF) in an active GRIN microlens characterized by a complex refractive index. The results show that the active microlens is regarded as a lossless microlens with a Gaussian mask induced by the complex refractive index. Comparison between light propagation effects in passive and active GRIN microlens is outlined.
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C. Gomez-Reino, M. T. Flores-Arias, A. Castelo, Y. Meuret, C. Ruwisch, H. Thienpont, N. Lindelein, "Light propagation in a GRIN microlens with gain or loss and comparison with lossless case", Proc. SPIE 6185, Micro-Optics, VCSELs, and Photonic Interconnects II: Fabrication, Packaging, and Integration, 618515 (21 April 2006); doi: 10.1117/12.661993; https://doi.org/10.1117/12.661993
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