For the purpose of fabricating an electro-optic (E-O) modulator of ZnTe, we introduced an improved method
for growing ZnTe crystals. Since pure ZnTe has a p-type conductivity, we use an indium
impurity and the charge--compensation effects to make insu...
For the purpose of fabricating an electro-optic (E-O) modulator of ZnTe, we introduced an improved method
for growing ZnTe crystals. Since pure ZnTe has a p-type conductivity, we use an indium
impurity and the charge--compensation effects to make insulating ZnTe .
From the X-ray diffraction patterns and the X-ray double--crystal rocking curve (DCRC), we found that the crystal surface
was the (110) plane and that the crystal was very high quality.
With this crystal, we made a ZnTe E-O modulator device, and as a test result, we confirmed that the modulation signal
varied linearly from 15 mV to 95 mV when an input signal of 25 V to 150 V was applied. The modulator followed
the Pockels effect exactly. Also, we obtained a significant modulation signal at 1.7 kHz and at 200 kHz.