Investigation and Control of Ultrafast Laser-Induced Nanoscale Patterns in Bulk Fused Silica

Razvan Stoian (1) , Konstantin Mishchik (1) , Guanghua Cheng (1, 2) , Cyril Mauclair (1) , Jean-Philippe Colombier (1) , Marian Zamfirescu (3)

1 LHC - Laboratoire Hubert Curien
2 State Key Laboratory of Transient Optics and Photonics,
3 NILPRP - National Institute for Plasma and Radiation Physics

Refractive index changes in a-SiO2 consist of positive index variations or regular nanoscale patterns. We spectroscopically reveal the electronic and structural transformation of glass in the self-organized structures, indicating bond breaking and oxygen deficiency. We equally propose a method of real time control of nanogratings formation under the action of ultrashort laser pulse with variable envelopes. Application as polarizing optical devices is discussed.

Mots clés: refractive index engineering; fused silica

Domaines: Optique / photonique

Razvan Stoian, Konstantin Mishchik, Guanghua Cheng, Cyril Mauclair, Jean-Philippe Colombier, et al.. Investigation and Control of Ultrafast Laser-Induced Nanoscale Patterns in Bulk Fused Silica. Progress in Ultrafast Laser Modifications of Materials, Apr 2013, Cargese, France. ⟨ujm-00829155⟩