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10:28
Compact Lens-less Digital Holographic Microscope for MEMS Inspection and Characterization
Published on: July 5, 2016
Multifunctional and compact spectrometers based on cylindrical beam volume holograms.
Omid Momtahan1, Chaoray Hsieh, Ali Adibi
1School of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0001, USA. omid@ece.gatech.edu
Optics Letters
|November 21, 2007
Summary
We introduce novel slitless spectrometers utilizing cylindrical beam volume holograms. This technology expands spectral range and allows independent beam modification, enhancing spectrometer performance without resolution loss.
Area of Science:
- Optics and Photonics
- Spectroscopy
- Holography
Background:
- Traditional spectrometers face limitations in spectral range and resolution.
- Slitless spectrometers offer advantages but require further development for enhanced performance.
Purpose of the Study:
- To propose and demonstrate a new class of slitless spectrometers.
- To leverage cylindrical beam volume holograms for improved spectral analysis.
- To enhance the operational spectral range and maintain resolution.
Main Methods:
- Utilizing cylindrical beam volume holograms for spectral dispersion.
- Implementing a spectral mapping technique in one direction.
- Independently modifying the beam in the perpendicular direction.
- Demonstrating a spectral wrapping technique.
Main Results:
- Cylindrical beam volume holograms disperse light in one direction while preserving the perpendicular dimension.
- Spectral mapping is achieved in one output plane direction.
- Independent beam modification in the perpendicular direction is feasible.
- Spectral wrapping significantly increases the operational spectral range without compromising resolution.
Conclusions:
- The proposed slitless spectrometers offer a unique approach to spectral analysis.
- Cylindrical beam volume holograms provide a versatile platform for spectrometer design.
- The spectral wrapping technique is effective in expanding the spectral range of slitless spectrometers.
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