Terahertz Free Beam Sensor 800 nm, 20 um high power dipole (T-Era-20D-800-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-800-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-800-Air, THz-PCA is made on high resistive ultra-fast epitaxially grown low-temperature GaAs (LT-GaAs) 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 attach 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-800-Air THz-PCAs generate unprecedented 100 nA peak THz photocurrent on the receiver antenna with more than 75dB terahertz power spectrum dynamic range.
- Terahertz Spectroscopy.
- Terahertz Imaging.
- Material characterization.
- Material sensing.
- Non-destructive test.
- Terahertz spectroscopy.
- Hidden object detection.
- Product inspection.
- Manufacturing quality control.
- Material identification, such as: plastics; pulp and paper; gels organic powders; adhesives.
- Thickness measurement and uniformity analysis.
- Coating and thin film analysis.
- Additives analysis.
- Electronic chip fault analysis.
- THz Time-domain Systems.
A typical THz pulse and its corresponding power spectrum generated by a T-Era-20D-800-Air transmitter module and detected by a T-Era-20D-800-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-800-Air THz-PCAs generate 100 nA peak terahertz photocurrent on the receiving antenna with more than 75dB 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.
The T-Era-20D-800 devices are long dipoles, which generate a large terahertz signal at the expense of lower bandwidth. They are useful for the type of applications that do not need a large terahertz bandwidth but require strong terahertz signals. Using a pair of these devices, you can generate a strong THz signal that can even be measured without a lock-in technique.
Product Specification:
| Optical Excitation Wavelength: | 750 nm-850 nm |
| Average Optical Power: | 1 mW-15 mW |
| Bias Voltage: | 1 V-15 V |
| Dark Resistance: | 9.6 MΩ |
| Spectrum Bandwidth: | 2.5 THz |
| Power Spectrum Dynamic Range: | 75 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-800-air transmitter module and detected by a T-Era-20D-800-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-800-air THz-PCAs generate 100 nA peak terahertz photocurrent on the receiving antenna with more than 75dB terahertz power spectrum dynamic range.
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