Second-order optical nonlinearity in corona-poled glass films

Abstract

Several experiments were performed to elucidate the origin of the second-order optical nonlinearity χ(2) induced in the corona-poled Corning 7059 glass films. The values and the time decay of the second-harmonic coefficient d33 were measured for the glass films poled on several different kinds of substrates. The value of d33 was found to be dependent on the kinds of substrates. It was also observed that the glass films poled on a soda-lime substrate showed faster time decay of d33 than those poled on a Pyrex glass substrate. The glass films were also poled at room temperature, and the values of d33 were measured as a function of poling time. As a result, the value of d33 increased with the poling time and approached a value which was close to that obtained for the glass films poled at 100 °C. From the experimental results, it is speculated that the space charge formed in the vicinity of the interface between the glass film and the substrate contributes to the creation of the χ(2). The planar charge density at the glass-film–substrate interface is derived, and the experimental results are discussed.

Second Harmonic Generation from Thermally Poled Ge-S Glass System

“…One can notice the intensity remarkably increased by poling near glass transition temperature. This relationship agrees with the observation of tellurite glasses, 6 and thus it is indicated that the translational movement inside of the glasses plays important role of the origin of the second harmonic generation. The intensity decreased by the poling above glass transition temperature.…”

Origin and enhancement of the second-order non-linear optical susceptibility induced in bismuth borate glasses by thermal poling

“…Among the available poling techniques, thermal poling has proven to be both straightforward and reliable [1]. The v (2) in thermally poled silica is of the order of 1 pm/V, possesses excellent long-term stability at room temperature and is determined mainly by the poling conditions [1]. In practice, the level of v (2) does not change significantly with the chemical composition of the glass although the latter has a dramatic influence on the stability of v (2) [7].…”

“…Breaking of the symmetry, which can be achieved by various poling techniques [1][2][3][4][5], provides the glass with second-order non-linear optical susceptibility v (2) , which can be exploited in order to implement electro-optic and second-order non-linear effects in glass planar waveguides or optical fibres [6]. Among the available poling techniques, thermal poling has proven to be both straightforward and reliable [1].…”

Optical quadratic nonlinearity in corona-poled glass film waveguides

“…The composition, room temperature resistivity, and refractive index of each glass are shown in Table 1 [14]. The refractive index of the Corning 7059 film was measured by the optical waveguide m-line method [16].…”

“…Nasu and colleagues proposed a model based on OH bonding in glass [10,11]. Apart from the reports on bulk glass [712], Okada and colleagues reported on phased-matched SHG (wavelength: 532 nm) in a glass thin film with corona poling [13] and qualitatively explained its origin as a glass interfacial effect [14]. We have also reported on the effect of the constituents (SiO 2 , B 2 O 3 , Al 2 O 3 , BaO) in a Corning 7059 glass film [15].…”