Experiment Creation of a monochromator

Subjects discussed :
- Dispersion by a network in reflection
- Adjustment of a monochromator in Czerny-Turner assembly
- Study of the resolution and spectral separation of a line spectrum

Principles and objectives:
The monochromator constitutes the main subset of the spectrometers. This instrument is designed to isolate a particular wavelength, or small spectral band Δλ, from light incident through an ouExperimentut slit.
In this practical work, we propose to build a monochromator based on the Czerny-Turner configuration which is made up of an optical system comprising:
    - an input slot which acts as a “point source” and whose opening has an influence on the brightness and resolution of the system,
    - a collimation mirror,
    - a diffraction grating in reflection,
    - a focusing mirror,
    - an ouExperimentut slot is positioned at the image focus of the ouExperimentut mirror, the opening of which also improves the resolution of the system, but also limits the ouExperimentut brightness.

Composition :
 ▪ 1 optical honeycomb table 600x450 mm (ref.203268)
 ▪ 7 standard magnetic feet (ref.202541)
 ▪ 1 wide magnetic foot (ref.202542)
 ▪ 1 magnetic foot with lateral translation (ref.202707)
 ▪ 1 magnetic foot with groove (ref.202540)
 ▪ 1 magnetic foot with angular adjustment (ref.204711) and fixing flanges (ref.203267)
 ▪ 1 optical foot (ref.203213)
 ▪ 1 cold white LED source (ref.204277)
 ▪ 1 spectral power supply (ref.204315)
 ▪ 1 E27 Mercury spectral bulb (ref.204093)
 ▪ 1 housing for E27 bulb (ref.203390)
 ▪ 2 slots with symmetrical opening (ref.202423)
 ▪ 2 concave mirrors f+100 mm (ref.202290)
 ▪ 2 concave mirrors f+200 mm (ref.202291)
 ▪ 2 converging lenses f+50 mm (ref.202273)
 ▪ 4 component holders Ø40 mm (ref.202439)
 ▪ 2 holographic gratings 600 and 1200 lines/mm (ref.202345 and 202346)
 ▪ 1 blade holder on rod (ref.204707)
 ▪ 1 large-edged iris diaphragm (ref.203301)
 ▪ 1 optical coupling nut (ref.202680)
 ▪ 1 white, squared metal screen 20x20 cm (ref.204094)
 ▪ 1 white plastic screen 15x15 cm (ref.202955)
 ▪ 1 experiment note and 1 GeoGebra software utility