A light beam and its second harmonic can create a semipermanent dc electric field inside glass. This dc electric field is responsible for the unexpected production of second-harmonic light in the glass. We determine the transverse spatial shape of this photoinduced dc field inside a bulk sample of germanium-doped fused-silica glass.
© 1993 Optical Society of America
Vince Dominic and Jack Feinberg, "Spatial shape of the dc electric field produced by intense light in glass," Opt. Lett. 18, 784-786 (1993)