Terahertz Free Beam Sensor 1550 nm, 20 um high power dipole (T-Era-20D-1550-Air)
- Rugged Packaging.
- Large THz Signal.
- Integrated Silicon Lens.
- Standard 01/2' Adaptor.
- Easy to Mount.
- Built-in Protection Circuit.
- Ready to Use.
The T-Era-20D-1550-Air terahertz photoconductive antenna (THz-PCA) is used to generate and detect high power and wideband terahertz pulses in THz time-domain systems. The T-Era-20D-1550-Air THz-PCA is made on high resistive ultra-fast epitaxially grown multi-quantum well InGaAs-InAlAs substrates and is packaged in TeTechS' patent pending THz chip enclosure module. The enclosure module houses the THz-PCA with a collimating high-resistive silicon lens attached to the back side of the THz-PCA chip.
The device is packaged in a modular format so that it is easy to change the THz-PCA chip inside the enclosure at a fraction of cost. The device is shipped with the silicon lens aligned and packaged on the back side of the THz-PCA chip. The silicon lens can be re-aligned after changing the THz-PCA chip using our silicon lens setting fixtures.
An input bias voltage can be applied to the chip through an isolated SMA connector. A built-in voltage limit circuit prevents overvoltage damage to the chip. In the receiving operation mode, the detected terahertz photocurrent can be measured through the SMA connector. A standard 01/2' treaded hole on the front plate and a tapped hole on the side of the enclosure make it convenient to attach the module to other standard optical components or mount it on an optical bench.
When excited by optical pulses with 15 mW average optical power, a pair of transmitter and receiver T-Era-20D-1550-Air THz-PCAs generate 4.5 nA peak terahertz photocurrent on the receiver antenna with 60 dB terahertz power spectrum dynamic range.
Terahertz technology has entered into an era with ever-growing applications in material spectroscopy and sensing, monitoring and spectroscopy in pharmaceutical industry and science, food industry, security, aerospace, oil industry, medical imaging, biology and medicine, and high-data-rate communications. Recent advances in semiconductor, laser, and optical technologies have made terahertz spectrum accessible to many technologists and scientists in diverse areas, ranging from biology and medicine to chemical, pharmaceutical, and environmental sciences to revisit their problems under the light of terahertz waves, thanks to the substantial growth of adjacent telecom, semiconductor, and laser markets in the recent years.
Product Specification:
| Optical Excitation Wavelength: | 1540 nm-1560 nm |
| Average Optical Power: | 1 mW-15 mW |
| Bias Voltage: | 1 V-15 V |
| Dark Resistance: | 0.276 MΩ |
| Spectrum Bandwidth: | 1.2 THz |
| Power Spectrum Dynamic Range: | 60 dB |
| Size (W X L X H): | 1" X 1" X 0.4" |
A typical THz pulse and its corresponding power spectrum generated by a T-Era-20D-1550-Air transmitter module and detected by a T-Era-20D-1550-Air receiver module in a terahertz time-domain system. Excited by 100 fs optical pulses with 15 mW average power a pair of T-Era-20D-1550-Air THz-PCAs generate 4.5 nA peak terahertz photocurrent on the receiving antenna with more than 60dB terahertz power spectrum dynamic range.
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