Affiliation
Wyant College of Optical Sciences, University of ArizonaIssue Date
2022-12-05
Metadata
Show full item recordPublisher
Optica Publishing Group (formerly OSA)Citation
McCaffrey, L., Alcaraz, P. E., & Pierre-Alexandre, B. (2022). Dispersion correction in the advanced volume holographic filter. Optics Express, 30(25), 45748–45758.Journal
Optics ExpressRights
© 2022 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement.Collection Information
This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.Abstract
Thick volume Bragg gratings (VBG) have been used for wavefront selectivity in various applications such as data storage, endoscopy, or astronomic observation. However, a single thick grating is also selective in wavelength, severely limiting the spectral throughput of the system. Recently, our group introduced a two element Advanced Volume Holographic Filter (AVHF) where the first, dispersive Bragg grating is coupled to a thick VBG such that it dramatically improves the spectral bandwidth, and ultimately enhances the signal to noise ratio of polychromatic sources. Still, the two grating AVHF configuration introduced wavelength dispersion which prevents usage of the filter in imaging systems. Here, we present a solution to this problem by introducing a third diffraction grating that compensates for the dispersion of the two initial gratings. Using both simulation and experimental implementation of a visible-based, broadband AVHF system, the spectral dispersion was improved by a factor of up to 41 × compared to our previous system, re-collimating the output filtered beam. This new AVHF system can be utilized in imaging applications with noisy environments requiring filtration of a polychromatic source. © 2022 OSA - The Optical Society. All rights reserved.Note
Open access journalISSN
1094-4087PubMed ID
36522973Version
Final published versionae974a485f413a2113503eed53cd6c53
10.1364/OE.472928
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