ArticleAdvanced materials (Deerfield Beach, Fla.)2026
Spectral Response Pixels in Lithium Niobate for Spectroscopic Applications.
Article in Advanced materials (Deerfield Beach, Fla.), 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Spectral encoding units are pivotal for computationally augmented spectroscopic applications across sensing, measuring, and imaging domains. Recent advancements in miniaturized spectroscopic systems have dramatically reduced the size of spectral encoding units, rendering them increasingly compatible with field-deployable, wearable, and customer platforms. However, the miniaturization of spectral encoding units is often accompanied by the deterioration of manufacturability, stability, and operational bandwidth. Here, we present a single-step approach to inscribe spectral response pixels in lithium niobate crystals. By employing ultrafast laser-induced pixelated amorphous phase transition in birefringent substrates, we achieve localized frequency-dependent optical modulation, generating dispersion signals at the microscale. These pixels function over a broad bandwidth (400-1550 nm), occupy an ultra-compact footprint (5 × 5 µm
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