Acousto-Optical Tunable Filter design for efficient diffraction of unpolarised light

Dupont, Samuel; Kastelik, Jean-Claude; Vanhamel, J.; Dekemper, E.

Type de document :

Communication dans un congrès avec actes

DOI :

10.61782/fa.2023.0505

Titre :

Acousto-Optical Tunable Filter design for efficient diffraction of unpolarised light

Auteur(s) :

Dupont, Samuel [Auteur]

Optoélectronique - IEMN [OPTO - IEMN]
INSA Institut National des Sciences Appliquées Hauts-de-France [INSA Hauts-De-France]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - Département Opto-Acousto-Électronique - UMR 8520 [IEMN-DOAE]
Optoélectronique - IEMN [OPTO - IEMN]
Université Polytechnique Hauts-de-France [UPHF]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Kastelik, Jean-Claude [Auteur]

INSA Institut National des Sciences Appliquées Hauts-de-France [INSA Hauts-De-France]
Université Polytechnique Hauts-de-France [UPHF]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Optoélectronique - IEMN [OPTO - IEMN]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - Département Opto-Acousto-Électronique - UMR 8520 [IEMN-DOAE]
Vanhamel, J. [Auteur]
Delft University of Technology [TU Delft]
Department of Electrical Engineering [KU Leuven] [KU-ESAT]
Dekemper, E. [Auteur]
Belgian Institute for Space Aeronomy / Institut d'Aéronomie Spatiale de Belgique [BIRA-IASB]

Titre de la manifestation scientifique :

10th Convention of the European Acoustics Association Forum Acusticum 2023

Ville :

Turin

Pays :

Italie

Date de début de la manifestation scientifique :

2023-09-11

Éditeur :

European Acoustics Association

Date de publication :

2023-09-15

Discipline(s) HAL :

Sciences de l'ingénieur [physics]

Résumé en anglais : [en]

Diffraction of optical waves by an acoustic grating is a well-known phenomenon that enables the design of versatile devices useful in photonic systems. For example, acousto-optic tunable filters (AOTFs) can be dynamically ...
Lire la suite >Diffraction of optical waves by an acoustic grating is a well-known phenomenon that enables the design of versatile devices useful in photonic systems. For example, acousto-optic tunable filters (AOTFs) can be dynamically tuned by radio-frequency signals. Among possible material choice, paratellurite is often used for practical applications due to its high efficiency. In such a birefringent material, the interacton is anisotropic. This configuration is sensitive to optical input polarisation: a selective coupling between polarization modes occurs. The incident beam must be polarised and the diffracted mode polarisation is orthogonal to the incident one. However, during the design process a very specific operation point can be found that ensures the simultaneous diffraction of both the ordinary and the extraordinary optical modes. In this presentation, we introduce the design of AOTF in birefringent crystals and present the main parameters that are subject to trade-off. Acousto-optic diffraction efficiency is sensitive to the so-called phase matching condition between optical wave and the ultrasonic wave. The offset from synchronicity is considered introducing a phase mismatch parameter. Diffraction efficiency evolution with respect to Bragg condition are illustrated. A custom device is finally presented that ensures simultaneous diffraction of both polarisation modes and compared to experimental results.Lire moins >

Langue :

Anglais

Comité de lecture :

Oui

Audience :

Internationale

Vulgarisation :

Non

Projet ANR :

Imagerie Spectro-Polarimétrique pour l'Identification Temps Réel

Collections :

Institut d'Électronique, de Microélectronique et de Nanotechnologie (IEMN) - UMR 8520

Source :

Harvested from HAL

Fichiers

000505.pdf
Accès libre
Accéder au document

document
Accès libre
Accéder au document

Dupont_2023_000505.pdf
Accès libre
Accéder au document

document
Accès libre
Accéder au document

Dupont_2023_000505.pdf
Accès libre
Accéder au document

Acousto-Optical Tunable Filter design for ... BibTeX CSV Excel RIS

Fichiers

Acousto-Optical Tunable Filter design for ...

BibTeX

CSV

Excel

RIS