Rare‐Earth‐Doped Y 2 SiO 5 Crystal Directly Bonded on Glass for Efficient Optical Quantum Technologies Platform

Anne Talneau (1) , Sacha Welinski (2) , Alban Ferrier (3)

1 C2N - Centre de Nanosciences et de Nanotechnologies
2 THALES [France]
3 ENSCP - Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL

For high‐efficiency optical quantum technology platforms, bonding rare‐earth doped crystals on glass are of great interest, enabling the enhancement of the optical guided mode interaction with the active rare‐earth ions. Optical coherence lifetimes and stable operation are operated at very low temperature (3–4 K). Bonding should be preferably performed without adding any intermediate sticking layer in order not to hamper the optical mode distribution and propagation. Directly bonded Y 2 SiO 5 crystal on a borosilicate glass is shown and the bonding mechanisms are discussed.

Mots clés: Hybrid bonding, Rear earth doped crystals, Non linear optics, Quantum communications

Domaines: Physique [physics]

Anne Talneau, Sacha Welinski, Alban Ferrier. Rare‐Earth‐Doped Y 2 SiO 5 Crystal Directly Bonded on Glass for Efficient Optical Quantum Technologies Platform. physica status solidi (a), 2024, Phys. Status Solidi A 2024, 2300718, ⟨10.1002/pssa.202300718⟩. ⟨hal-04475234⟩