Thermal effects in the DKDP Pockels cells in the 215–300  K temperature range

Abstract

The thermal and electro-optical effects in Pockels cells with deuterated potassium dihydrogen phosphate (DKDP) crystals in the 215-300 K temperature range were investigated. Half-wave voltage decreases linearly with cooling, thereby it reduces seven times (up to 1 kW) with cooling to 215 K. The optical power of the thermally induced lens falls twice on cooling to 215 K from 300 K; thermally induced depolarization is almost independent of temperature and determined by input radiation power. A significant reduction of the thermally induced depolarization in a DKDP crystal with the axis inclined to the polarization plane of the beam was demonstrated numerically and experimentally. Thus, the DKDP crystals cooled to 215 K allow the creation of a low-voltage Pockels cell working with a high average and peak laser power.

Thermo-optical and magneto-optical characteristics of CeF 3 crystal

“…Optical scheme was the same as in Refs. [28] and [29]. Heating was performed by an Ybfiber laser (l ¼ 1075 nm) with maximum power of 300 W. Beam has Gaussian intensity profile and radius of 0.17 mm.…”

Polar-coordinate-based data analysis scheme for high-voltage measurement system using the Pockels electro-optic effect

“…V π is the half-wave voltage set by the Pockels cell and the laser wavelength defined as V π ≡ λ laser /2n 3 o r 63 . Since V π depends on not only the laser wavelength but also the temperature sensitively [13], independent measurements of V π are typically required.…”

Influence of the Piezoelectric Ringing on the Temperature of the Beta Barium Borate Crystal

“…High piezoelectric ringing amplitudes produce the heat. It is known that the polarization angle of the light, which travels through the DKDP Pockels cell crystal, depends on the temperature [10,11]. Consequently, the temperature change causes the variation of the CR as well.…”

“…The investigations of the temperature impact on the polarization of the light of the Pockels cells based on the DKDP crystals have already been performed [9][10][11]. The results presented in [9][10][11] show that the temperature change influences the polarization and, as a consequence, the CR.…”