1 Ocak 2018 Dergi makalesi Açık Erişim

Cetindag, S. Kaan; Toy, M. Fatih; Ferhanoglu, Onur; Civitci, Fehmi

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{
  "@context": "https://schema.org/", 
  "@id": 29747, 
  "@type": "ScholarlyArticle", 
  "creator": [
    {
      "@type": "Person", 
      "affiliation": "Istanbul Tech Univ, Dept Elect & Commun Engn, TR-34469 Istanbul, Turkey", 
      "name": "Cetindag, S. Kaan"
    }, 
    {
      "@type": "Person", 
      "affiliation": "Istanbul Medipol Univ, Dept Biomed Engn, TR-34810 Istanbul, Turkey", 
      "name": "Toy, M. Fatih"
    }, 
    {
      "@type": "Person", 
      "affiliation": "Istanbul Tech Univ, Dept Elect & Commun Engn, TR-34469 Istanbul, Turkey", 
      "name": "Ferhanoglu, Onur"
    }, 
    {
      "@type": "Person", 
      "affiliation": "Istanbul Tech Univ, Dept Elect & Commun Engn, TR-34469 Istanbul, Turkey", 
      "name": "Civitci, Fehmi"
    }
  ], 
  "datePublished": "2018-01-01", 
  "description": "We present a novel spectrometer device offering a wide wavelength range and high resolution. The device builds upon a conventional prism spectrometer; however, an additional scattering medium is introduced to generate a wavelength-dependent speckle pattern on the detector array. Simultaneous use of the prism and the scattering medium allows for both improved resolution and wavelength range. The generated speckle pattern secures a significant improvement in the resolution (up to 100 folds) and dynamic range over a conventional prism spectrometer. With the proposed spectrometer, implemented using a CCD camera, we demonstrate up to 17-pm resolution at 855-nm central wavelength and 756.5-nm wavelength range revealing a dynamic range of similar to 44 500. The dynamic range could be further improved upon using a detector array having larger area and a scattering medium offering a nar-rower spectral correlation function. With further development, the proposed device could be useful in a variety of spectroscopy applications, such as deep imaging of retinal layers in optical coherence tomography.", 
  "headline": "A Speckle-Enhanced Prism Spectrometer With High Dynamic Range", 
  "identifier": 29747, 
  "image": "https://aperta.ulakbim.gov.tr/static/img/logo/aperta_logo_with_icon.svg", 
  "license": "http://www.opendefinition.org/licenses/cc-by", 
  "name": "A Speckle-Enhanced Prism Spectrometer With High Dynamic Range", 
  "url": "https://aperta.ulakbim.gov.tr/record/29747"
}