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Published on: July 18, 2015
Multiechelle grating mountings with high spectral resolution and dispersion
Applied Optics
|April 20, 2010
Summary
A novel spectrometer mounting utilizes multiple echelle gratings to achieve additive resolution and high dispersion. This multiechelle grating design enables compact, high-resolution spectrometers.
Area of Science:
- Spectroscopy
- Optical Engineering
Background:
- Traditional spectrometers face limitations in resolution and compactness.
- Echelle gratings offer high spectral resolution but can be bulky.
Purpose of the Study:
- To introduce and verify a new spectrometer mounting design using multiple echelle gratings.
- To achieve enhanced spectral resolution and dispersion in a compact form factor.
Main Methods:
- A novel mounting configuration for several echelle gratings was designed.
- The gratings were arranged to allow their dispersions to coact.
- Experimental verification of the proposed mounting was performed.
Main Results:
- The multiechelle grating mounting achieved a spectral resolution equal to the sum of individual grating resolutions.
- Very high dispersion was observed in the focal plane due to coacting dispersions.
- Experimental results confirmed the theoretical performance.
Conclusions:
- The multiechelle grating mounting offers a viable method for creating compact spectrometers with unprecedented resolution.
- This design surpasses the resolution limits of conventional single-grating spectrometers.
- The experimental verification validates the effectiveness of the multiechelle grating approach.
