太赫兹光电导天线阵列 交叉指型光电导天线

     BATOP不仅提供单带隙天线，还包括整合了微透镜的高能大狭缝交叉天线阵列和整套的太赫兹光谱仪。 

 产品特点：

—  高太赫兹输出功率（最高可至280uW）

— 大面积发射/探测

— 高的转换效率~ 10^-4（100μW THz / 1 W optical power）

— 谱宽 0.1 – 3 THz

— 封装有超半球Si透镜和SiO2透镜阵列

iPCA working principleAn extended gap along the finger electrodes of the iPCA is illuminated by a short pulse laser beam. By using the microlens array only every second gap between the finger structure is excited by the laser. The fill factor of the lens array of 73.5 % ensures, that nearly the total optical laser energy is used for excitation of carriers. Despite of the large emitting area the needed voltage for the carrier excitation is low (< 35 V) because of the small gap of only 5 μm. The coherent excitation of the single emitters located at every microlens spot results in a constructive interference of the radiated THz waves in the far field.

Mounting:

iPCA chip, size 4 mm x 4 mm, thickness 625μm, mounted on 25.4 mm diameter black aluminium mount with prealigned hyperhemispherical silicon lens ? 12 mm and prealigned fused silica lens array, size 2 mm x 2 mm, and 1 m coaxial cable (RG 178) with BNC or SMA connector.