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Article Dans Une Revue IEEE Photonics Technology Letters Année : 2011

Contrast and Finesse Enhancement in a Birefringent Filter

Résumé

We propose and demonstrate a novel optical implementation to simultaneously improve the contrast and increase the finesse of a classical -stage Lyot filter. The new device based on the multiple-passage concept uses two mirrors placed at the extremities of the filter. The light beam passes through the structure back and forth and each passage has a significant influence in reducing the sidelobes and the bandwidth of the filter transmittance. We show that for a two-stage Lyot filter, the contrast is increased by 100% after each passage and the finesse is improved by over 50% after four passages and more. Such a device is highly desirable in a wide field where the filtering function requires high performancesin term of contrast and finesse.
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Dates et versions

hal-00724680 , version 1 (22-08-2012)

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Citer

Djalal Falih Bendimerad, Badr-Eddine Benkelfat, Yaneck Gottesman, Omar Seddiki, Bruno Vinouze, et al.. Contrast and Finesse Enhancement in a Birefringent Filter. IEEE Photonics Technology Letters, 2011, 23 (22), pp.1721-1723. ⟨10.1109/LPT.2011.2168202⟩. ⟨hal-00724680⟩
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