Micro/nano/technologies for enhanced integration of optoelectronic devices

We are developing micro/nano-technologies combining organic and inorganic materials in semiconductor optical microdevices (VCSELs, photodetectors, OLEDs) to improve their integration in compact optical instrumentation and communication systems.

Microcavity devices

We exploit filtering and resonance effects in optical microcavities to adapt the properties of blue-emitting OLEDs (470 nm) to the needs of compact instrumentation systems. We are also developing generic micro/nano technologies to improve the integration of III-V near infrared microcavity devices for laser emission (VCSELs, vertical cavity surface emitting lasers) or photodetection (photodiodes), for application to ICT and instrumentation systems.

Implied Persons:

• V. Bardinal
• I. Séguy

Running projects:

• ANR BELUGA
• ANR 3DBEAMFLEX

Beam control

We are developing methods for shaping the beam emitted by VCSELs using micro/nano polymer technologies applicable at low temperatures, at the post-process or post-mount stage. In particular, we are studying the fabrication of microlenses on VCSEL chip using two-photon fs 3D-printing, as well as the realization by NIR photopolymerization of flexible, self-written single-mode waveguide between a single-mode VCSEL and a single mode optical fiber.

Implied Persons:

• V. Bardinal

Running projects:

• ANR 3DBEAMFLEX (https://sites.laas.fr/projects/3DBEAMFLEX/)

Spectral tunability

We design and fabricate new kinds of tunable optical devices (filters, photodetectors, laser VCSELs) for portable instrumentation systems, where spectral reproducibility and stability are crucial (no moving parts). To this end, we take advantage of the electro-optical properties of nematic liquid crystals and develop innovative processes for aligning and integrating these birefringent materials into III-V semiconductor devices.

Implied Persons:

• V. Bardinal
• S. Plissard

Running projects:

• ANR DOCT-VCSEL