IPCA光電導天線陣列(iPCA - interdigital array)
品牌： Batop
型號： IPCA
BATOP不僅提供單帶隙天線，還包括整合了微透鏡的高能大狹縫交叉天線陣列和整套的太赫茲光譜儀。
產品特點：
? 高太赫茲輸出功率（可至280uW）
? 大面積發射/探測
? 高的轉換效率~ 10-4（100μW THz / 1 W optical power）
? 譜寬 0.1 – 3 THz
? 封裝有超半球Si透鏡和SiO2透鏡陣列
Part No. | Delivery time | l | g | w | Description |
iPCA-21-05-300-800-h | 1 week | 21 | 05 | 300 | interdigital photoconductive terahertz antenna, resonance frequency 2 THz, gap distance 5 μm, active area 300 μm x 300 μm, optical excitation wavelength λ= 800 nm, with adjusted hyperhemispherical silicon lens, BNC connector |
iPCA-21-05-1000-800-h | 1 week | 21 | 05 | 1000 | interdigital photoconductive terahertz antenna, resonance frequency 2 THz, gap distance 5 μm, active area 1 mm x 1 mm, optical excitation wavelength λ= 800 nm, with adjusted hyperhemispherical silicon lens, BNC connector |
iPCA working principle
An 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.
Part No. example | Description |
iPCA-21-05-1000-800-h | interdigital PhotoConductive Antenna |
iPCA-21-05-1000-800-h | length l = 21 μm |
iPCA-21-05-1000-800-h | gap distance g = 5 μm |
iPCA-21-05-1000-800-h | width w = 1000 μm |
iPCA-21-05-1000-800-h | laser excitation wavelength λ ~ 800 nm |
iPCA-21-05-300-800-h | mounted on a hyperhemispherical Si lens with 12 mm diameter |
iPCA-21-05-1000-800-h | mounted on a hyperhemispherical Si lens with 12 mm diameter |
| additional options: |
iPCA-21-05-1000-800-c | mounted on an collimating aspheric Si substrate lens with 12 mm diameter |
iPCA-21-05-1000-800-a | mounted on an aspheric focusing Si lens with 12 mm diameter |
iPCA-21-05-1000-800-h-f | fiber coupled antenna with FC/PC connector |
- 光電導天線陣列
