Chirped surface gratings on azopolymers from digital holographic photomorphing
Abstract
Azomaterials are a powerful class of photoactive materials capable of surface morphing under structured light, enabling fully reprogrammable micro-optical elements. We demonstrate the fabrication and dynamic reconfiguration of linearly chirped diffraction gratings via azopolymer-based photomorphing using digital holographic lithography. This method allows continuous control over the spatial distribution of the grating vectors, encoding a wide range of periodicities within a single exposure, an achievement typically hampered by conventional two-beam interference techniques. Real-time monitoring of diffraction efficiency also boosts direct optimization of lithographic parameters, ensuring agreement with theoretical predictions of scalar diffraction theory. The full reconfigurability of the azopolymer surface also allows dynamic tuning of the diffraction orders, including both the angular and spectral distribution as well as the power ratio of the diffracted light. These capabilities further establish our approach as a versatile platform for advancing azopolymer-based reconfigurable diffractive optics.
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BibTeX
@article{reda2026chirped,
title = {{Chirped surface gratings on azopolymers from digital holographic photomorphing}},
author = {Francesco Reda and Fabio Borbone and Marcella Salvatore and Stefano Luigi Oscurato},
journal = {Journal of Optical Microsystems},
year = {2026},
month = oct,
doi = {10.1117/1.jom.5.2.024002},
url = {https://hal.science/hal-05789707v1},
note = {CC BY},
}
RIS
TY - JOUR
TI - Chirped surface gratings on azopolymers from digital holographic photomorphing
AU - Francesco Reda
AU - Fabio Borbone
AU - Marcella Salvatore
AU - Stefano Luigi Oscurato
PY - 2026
DA - 2026/10/09
JO - Journal of Optical Microsystems
DO - 10.1117/1.jom.5.2.024002
UR - https://hal.science/hal-05789707v1
AB - Azomaterials are a powerful class of photoactive materials capable of surface morphing under structured light, enabling fully reprogrammable micro-optical elements. We demonstrate the fabrication and dynamic reconfiguration of linearly chirped diffraction gratings via azopolymer-based photomorphing using digital holographic lithography. This method allows continuous control over the spatial distribution of the grating vectors, encoding a wide range of periodicities within a single exposure, an achievement typically hampered by conventional two-beam interference techniques. Real-time monitoring of diffraction efficiency also boosts direct optimization of lithographic parameters, ensuring agreement with theoretical predictions of scalar diffraction theory. The full reconfigurability of the azopolymer surface also allows dynamic tuning of the diffraction orders, including both the angular and spectral distribution as well as the power ratio of the diffracted light. These capabilities further establish our approach as a versatile platform for advancing azopolymer-based reconfigurable diffractive optics.
SN - 2708-5260
ER -