On the quadratic electro-optic effect in KDP

Magnitude and nature of the quadratic electro-optic effect in potassium dihydrogen phosphate and ammonium dihydrogen phosphate crystals

“…(8) in Ref. 1.] It follows from this theory that, for light propagating along the crystallographic y axis of a KDP-type crystal, to which a field is applied in the x direction, the field-induced changes in refractive index in Eq.…”

“…It not only finds extensive use in a variety of technological applications but can also be related to other nonlinear phenomena such as Brillouin and Raman scattering and wave mixing. 1 Thus the study of electro-optic properties is also of importance in obtaining an insight into the nature of nonlinear phenomena.…”

“…To explain the spread, it had been suggested previously that in certain cases the theoretical conditions forbidding the existence of the linear electro-optic effect were not precisely realized in practice; thus the measured response was due to both the linear and the quadratic effects, yielding misleading results for the latter. 1 Measurement techniques, specifically those employing static fields, which do not distinguish the linear and quadratic responses, may be regarded as suspect, and results so obtained should be treated with caution. Yet, despite this, it is largely the static results for KDP-type crystals that are quoted in the literature (see, for example, Landolt-Börnstein 3 and Yariv and Yeh 13 ).…”

Characteristics of a corona discharge in active media of pulse-periodic XeCl* lasers emitting at λ = 308 nm

“…For KDP, r yzx = −8.6 × 10 −12 m V −1 [9], while the values of its g components in (21) are: g xxxx = −3.4, g xx yy = −0.2, g zzx x = −0.7 [2], and |g x yx y | = 1.4 [5], in units of 10 −20 m 2 V −2 . Since n o and n e are about 1.5, e.g.…”

“…Such a rotation occurs in the experiment to measure the quadratic coefficient g x yx y of KDP for light along the optic axis in a transverse field. In attempts to determine this coefficient experimentally we noted that our results were highly sensitive to inaccuracies in the crystal orientation and thus the value of |g x yx y | was measured indirectly [5]. Against this background it becomes of special interest to study the accuracy with which coefficients can be measured in different configurations, for instance, when the same coefficient may be measured with the light propagating parallel or perpendicularly to the optic axis in the appropriate field.…”