Temperature dependence of linear electrooptic coefficients r 113 and r 333 in lithium niobate

Abstract

A new method of determination of individual linear electrooptic coefficients is proposed. The technique is based on the dynamic polarimetric measurements and takes into consideration the temperature dependences of ordinary and extraordinary refractive indices. Results obtained for the electrooptic coefficients r113 and r333 in LiNbO3 are presented. The coefficients are found to increase significantly within the considered temperature range 25-200°C. The temperature dependences of the intrinsic coefficients m113 and m333, defined in terms of the induced polarisation, are considered as well.

All-optical technique to measure the pyroelectric coefficient in electro-optic crystals

“…15 The variation in the electro-optic coefficients in the temperature interval is considered negligible in accordance with recent publication. 16 Then the material spontaneous polarization change ⌬P s can be calculated through Eq. ͑3͒ knowing the dielectric constants of LiNbO 3 , whose variation is also negligible in the considered temperature range.…”

Temperature-dependent terahertz time-domain spectroscopy study of Mg-doped stoichiometric lithium niobate

“…In the THz generation efficiency, beside the absorption, the electro-optic coefficient has also a key role, since the effective nonlinear optical coefficient is proportional to it [14]. The electro-optic coefficient also decreases with decreasing temperature [15]. Therefore it is not evident, that the THz generation efficiency is higher if the temperature is lower.…”

Thermally insensitive design for the LiNbO3electro-optical modulator under dynamic electric field

“…Due to large electro-optic coefficients [1] and high bandwidth, LiNbO 3 has been widely used as an optical modulator and Qswitch in high speed fiber-optic communication systems [2][3][4][5][6]. However, the linear electro-optic coefficient and refractive index are often noticeably temperature dependent [7][8][9]. This feature limits the temperature stability of electrooptic devices [7], in particular, for outdoor industry and military application [10] if high modulation precision is also required.…”

“…However, the linear electro-optic coefficient and refractive index are often noticeably temperature dependent [7][8][9]. This feature limits the temperature stability of electrooptic devices [7], in particular, for outdoor industry and military application [10] if high modulation precision is also required. Recently, the concept of thermal insensitive (TI) orientations in an electro-optic crystal has been demonstrated [11], the crystal can be used as an intrinsic temperature stable electro-optic modulator without the external compensation if a beam of light propagates in TI orientations through the crystal.…”