Photothermal spatial light modulator

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985882%3A_____%2F25%3A00648233" target="_blank" >RIV/67985882:_____/25:00648233 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1117/12.3058335" target="_blank" >https://doi.org/10.1117/12.3058335</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1117/12.3058335" target="_blank" >10.1117/12.3058335</a>

Result language

angličtina

Original language name

Photothermal spatial light modulator

Original language description

We introduce a novel approach to spatial light modulators by leveraging the unique properties of photothermal metamaterials for polarization-independent, active wavefront modulation of transmitted beams across a wide wavelength range. The operating principle relies on the thermo-optic effect in plasmonic gold nanoparticles embedded in a polymeric matrix, with precise control provided by a heating laser beam. This work presents a new concept for photothermal spatial light modulators (PT-SLMs), which offers enhanced control over light propagation. In previous studies, digital micromirror devices were used to modulate the PT-SLM profile, enabling rapid and efficient wavefront control. However, these systems were limited by a narrow field of view and high power requirements, confining their use to specialized optical laboratories. In this work, we incorporate metamaterial structures and acousto-optic deflectors (AODs) to overcome these limitations, enabling higher efficiency and broader applicability. With a frame rate of 2.8 kHz for a 128x128 pixel grid (0.36 ms per frame), the system achieves highly accurate control over the refractive index distribution across the active layer. This results in a larger field of view, improved performance, and the ability to modulate wavefronts with high precision. The system also offers near-continuous position resolution, tunable feature sizes, and polarization independence, making it ideal for a broad range of wavelengths and applications in flat optics. This enhanced PT-SLM design opens up exciting opportunities for high-speed, high-resolution wavefront control, advancing the potential of metamaterials and flat optics for applications requiring precise and efficient optical modulation across diverse wavelengths

Czech name

—

Czech description

—

Type

D - Article in proceedings

CEP classification

—

OECD FORD branch

10306 - Optics (including laser optics and quantum optics)

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2025

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

Proceedings of SPIE, Metamaterials XV

ISBN

9781510688421

ISSN

0277-786X

e-ISSN

1996-756X

Number of pages

7

Pages from-to

"Roč. 13523 (2025)"

Publisher name

SPIE

Place of publication

Bellingham

Event location

Prague

Event date

Apr 8, 2025

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

001533512900012