Optical Spectroscopy with
Basics - Building Blocks - Systems - Applications
Basics Chapter 1: Diffraction Gratings
Please note: The content
of the BASICS pages is available in printed shape since June 2014:
"Fundamentals of dispersive optical Spectroscopy
SPIE-Monograph, ISBN No.: 9780819498243
The internet pages have been reduced to the headlines, equations, and figures of the different chapters . We hope, that the brief collection and the complete and extended book will be as helpful and useful for you, as the spectra-magic.de/Basics have been.
If you want to be linked directly to the ordering page of SPIE, please click here!
Aim of the “Fundamentals” is to help starters with the definition and verification of the instrumentation for optical spectroscopy. Experienced spectroscopists and expert physicists will know some of the issues better and in deeper detail. But hopefully, every reader may find things worth mentioning.
1.1.0 Grating functions
Graph 1: Parameters of a reflecting diffraction grating
1.1.1 The Free Spectral Range
1.2.0 The Dispersion of Gratings
Graph 2 with equation F3 explains the calculation of the angular difference of close-by wavelengths, as they leave the grating after dispersion.
Graph 3: “Resolution” by the 10% criterion.
1.4.0 Diffraction efficiencies and polarization of standard gratings.
Graph 4: General efficiency curves of blazed diffraction gratings.
1.4.1 A look at several kinds of dispersers:
Graph 5: Different dispersing Elements
Efficiency behaviour of Echelle gratings
Graph 6: Efficiency of an Echelle Grating at four subsequent orders
1.4.4 Concave and toroidal gratings
1.4.5 Transmission Gratings
1.4.6 The Prism
Graph 9: The transmitting and the reflecting prism.
1.5.0 Other features of diffraction gratings
1.5.1 Polarization Anomaly
Graph 7 shows some S plane curves adapted from real gratings under Littrow condition.
Graph 7A is an example, how Wood´s Anomaly leads to signal overshot.
1.5.2 Polarization of Echelle gratings
Graph 8: Polarization and Anomalies of Echelle Gratings
1.5.3 Scattering effects
1.5.4 Grating Ghosts
1.5.5 Shadowing and Diffusion
Hoping the study of the book Elements of dispersive optical Spectrometers will be of help for you, we remain with special thanks for your interest.
All copyrights on "spectra-magic.de" and "Optical
Spectroscopy with dispersive Spectrometers
Basics - Building Blocks - Systems - Applications " are reserved by
Wilfried Neumann, D-88171 Weiler-Simmerberg.
Status April 2012