MOSCOW BAUMANN STATE TECHNICAL UNIVERSITY
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AIM OF THE WORK

EQUIPMENT

   Spectrometer

   Optical behch design

   Optical resolution

   CCD-detector

   Fibre optic cable

   Collimating lens

   AVALight lamp

   SPECTROMETER CONTROL PARAMETERS

REFERENCE INFORMATION

   Spectral lines

   Argon (Ar I)

   Argon (Ar II)

   Crom (Cr I)

   Iron (Fe I)

   Hydrogen (H I)

   Mercury (Hg I)

EXPERIMENT

   Experiment scheme

   Àcquaintance with control interfaces

   Order of carrying out the work

   Stage 1

   Stage 2

   Stage 3

   Practical part
 
Optical behch design
The fiber optic spectrometer AvaSpec 2048 are 2 optical benches with 75 mm focal length, developed in a symmetrical Czerny-Turner design.

Light enters the optical bench through a standard SMA905 connector (1) and is collimated by a spherical mirror (2). A plane grating (3) diffracts the collimated light; a second spherical mirror (4) focuses the resulting diffracted light. An image of the spectrum is projected onto a 1-dimensional linear detector array (5).

The optical bench has a number of components installed inside, allowing a wide variety of different configurations, depending on the intended application. The choice of these components such as the diffraction grating, entrance slit, order sorting filter, and detector coating have a strong influence on system specifications.

AvaBench-75 technical data
Focal length 75 mm
Numerical aperture 0.07
Stray light < 0.1 %
Detector SONY 2048
Dimensions, weight 120x91 x 21 mm, 255 gr.