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Title: Characterization of designed and constructed optical system,

Authors: Ph.D Hemmo Tuovinen and Eric Amankwa

Topic: Information Technology


This laboratory work emphasize on the characterization of designed and constructed
grating spectrometer . This was done by measuring the diffraction efficiency of the
fabricated grating. The fabricated grating is a binary grating with height 650 nm,
period 880 nm and fill factor 0.40 nm. The light source used were laser sources
and halogen lamp with wavelength range 532 nm and 473 nm. CCD line camera
is used as a detector having 3648 pixels with each pixel having a size of 8μm. The
diffraction efficiencies and filter transmittance measured with the Perkin Lambda 18
spectrophotometer are compared with the constructed spectrometer. The character-
ization is done by measuring the full width half maximum (FWHM) of the detected
laser line peaks by the constructed spectrometer.


    COMMENT - 1

  • EMMANUEL CHINWEUBA NWANI (Viewer) 23rd Nov 2015 - 10:14 PM
    Dear Authors, Hemmo Tuovinen and Eric Amankwa
    Your article is scholarly okay and was presented in a standardized way. The data analysis confirms the level of laboratory test you conducted to reach the conclusion. The paper, going by your references is current and relevant to field of application.

    Question: Where exactly can this grating spectrometer be applied?

  • COMMENT - 2

  • Sikandar Khan (Viewer) 24th Nov 2015 - 10:08 AM
    I think you have a very strong paper that seems to fulfill the parameters of the assignment quite well.

  • COMMENT - 3

  • Amankwa Eric (Author) 24th Nov 2015 - 4:30 PM
    Amankwa Eric
    Many thanks Emmanuel Nwani
    Grating spectrometer is applicable in varying fields such as;
    Astronomy or Astrophysics to measure velocities of galactic components such as composition of stars
    Biomedical to ensure correct signal processing
    CCD camera for digital holography
    At large it can be applied everywhere so far as light is concern

  • COMMENT - 4

  • Amankwa Eric (Author) 24th Nov 2015 - 4:31 PM
    Many thanks Sikandar Khan for the kind comment.

  • COMMENT - 5

  • Novlloyd Celeste (Viewer) 26th Nov 2015 - 12:13 PM
    Your paper is truly commendable!
    With your result it will give idea and serve as springboard in constructing devices that are equally comparable to the existing devices.
    Good job to your Sir!
    • Amankwa Eric (Author) 26th Nov 2015 - 8:13 PM
      Many thanks
      Sir Novlloyd Celeste

  • COMMENT - 6

  • Kayode Aderinsola Eunice (Viewer) 26th Nov 2015 - 2:13 PM
    Dear Authors,
    The approach to your research work is excellent. The data analysed would definitely help to reach the conclusion on characterization of designed and constructed optical system. and those figures were well explained and understood which reveals the spectrometer results and its performances.
    Very good work, Well done and keep it up.
    Mrs. Kayode Aderinsola E. (University of Ibadan, Nigeria)
    • Amankwa Eric (Author) 26th Nov 2015 - 8:14 PM
      Many thanks
      Mrs. Kayode Aderinsola E. (University of Ibadan, Nigeria)

  • COMMENT - 7

  • MAURICIO ADAMI MARIANI (Viewer) 26th Nov 2015 - 5:03 PM
    Great. Excellent organization , description , and writing
    • Amankwa Eric (Author) 26th Nov 2015 - 8:15 PM
      Many thanks