Optimization of multiplexed holographic gratings in PQ-PMMA for spectral-spatial imaging filters

Luo Yuan, Paul J. Gelsinger, Jennifer K. Barton, George Barbastathis, Raymond K. Kostuk

Research output: Contribution to journalArticlepeer-review

90 Scopus citations


Holographic gratings formed in thick phenanthrenquinone- (PQ-) doped poly(methyl methacrylate) (PMMA) can be made to have narrowband spectral and spatial transmittance filtering properties. We present the design and performance of angle-multiplexed holographic filters formed in PQ-PMMA at 488 nm and reconstructed with a LED operated at ∼630 nm. The dark delay time between exposure and the preillumination exposure of the polymer prior to exposure of the holographic area are varied to optimize the diffraction efficiency of multiplexed holographic filters. The resultant holographic filters can enhance the performance of four-dimensional spatial-spectral imaging systems. The optimized filters are used to simultaneously sample spatial and spectral information at five different depths separated by 50 μm within biological tissue samples.

Original languageEnglish (US)
Pages (from-to)566-568
Number of pages3
JournalOptics letters
Issue number6
StatePublished - Mar 15 2008

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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