Second harmonic generation in chalcogenide glasses

Virginie Nazabal (1) , I. V. Kityk

1 ISCR - Institut des Sciences Chimiques de Rennes

This chapter is mainly devoted to the second-order nonlinear optical processes induced in optically isotropic chalcogenide glasses. The chapter is divided into two main parts related to the second-order nonlinear optical effects in near infrared and IR stimulated processes obtained in chalcogenide glasses. The different processes applied to break the centrosymmetry of glasses, which enables their use for the conversion of wavelength and for electro-optical purposes, are described: optical poling, poling assisted by e-beam or thermal poling. The origin and mechanisms of the phenomena induced by these processes, dedicated to the generation in glasses of a second-order nonlinear optical response, are discussed. In addition to these extrinsic methods, the interest in glass-ceramics containing non-centrosymmetric crystalline phases is considered. This chapter is also dedicated to some experiments describing IR-laser-stimulated changes of main linear and nonlinear optical constants in chalcogenide glasses. The origin of the observed phenomena is described within phenomenological and microscopic approaches, with special attention being paid to the contribution of phonons.

Mots clés: second-order nonlinear optical; second harmonic generation (SHG); poling; IR-laser-induced non-centrosymmetry; phonon contributions

Domaines: Matériaux

Virginie Nazabal, I. V. Kityk. Second harmonic generation in chalcogenide glasses. Woodhead Publishing Series in Electronic and Optical Materials, 2014, 44, pp.509-561. ⟨10.1533/9780857093561.2.509⟩. ⟨hal-00989577⟩