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BATOP, a developer of semiconductor optoelectronic devices and terahertz components, offers a range of terahertz time-domain spectrometers (THz-TDS) designed for material analysis, spectroscopy, and imaging applications in research and industrial environments. The company’s THz portfolio includes benchtop spectrometers, pre-assembled systems, modular THz kits, and photoconductive antenna components for custom terahertz system development.

BATOP’s THz spectrometers operate using the principle of terahertz time-domain spectroscopy, where ultrashort laser pulses excite photoconductive antennas to generate and detect broadband terahertz radiation. By measuring the temporal response of THz pulses passing through or reflected from a sample, the system can determine material properties such as refractive index, absorption characteristics, conductivity, and layer thickness with high precision.

The company’s flagship TDS10XX benchtop spectrometer series is designed for laboratory-based THz characterization. These systems support both transmission and reflection measurements and are available with either an internal nitrogen-purged sample compartment or external fiber-coupled antennas for flexible experimental configurations. The spectrometers cover a frequency range of approximately 0.05 THz to 4 THz, enabling analysis of materials across a broad terahertz spectrum.

A major feature of the TDS10XX platform is its support for fiber-coupled antenna configurations, which simplify alignment and allow external measurement geometries such as angular scanning and THz imaging of larger objects. Optional accessories include reflection measurement holders, attenuated total reflection modules, imaging scan units, and fast scanning systems capable of increasing acquisition speed for dynamic measurements.

For users who already own femtosecond laser sources, BATOP also provides pre-assembled THz systems and modular THz kits. These solutions include aligned emitter and detector antennas, signal generators, data acquisition electronics, delay stages, and the company’s proprietary T3DS software package. The modular approach allows researchers to build customized terahertz setups while reducing system integration complexity.

The systems are compatible with femtosecond lasers operating around 780 nm, 1060 nm, and 1550 nm, supporting a variety of ultrafast laser platforms. Depending on the antenna type and laser configuration, the spectrometers can achieve bandwidths exceeding 4 THz and dynamic ranges of approximately 70–85 dB, enabling sensitive analysis of weak THz signals and subtle material features.

BATOP also develops a range of photoconductive antennas (PCAs) optimized for THz emission and detection. These antennas are available with different substrate lens geometries, including hyperhemispherical silicon lenses and aspheric TPX lenses, enabling divergent, collimated, or focused THz beam profiles. The company additionally offers patented large-area interdigital antenna arrays for improved terahertz power generation efficiency.

The spectrometer systems are controlled through the company’s LabVIEW-based T3DS software, which enables acquisition and visualization of time-domain signals, real-time Fourier transformation into THz spectra, automated scanning control, and extraction of material parameters. The software also supports data storage and advanced analysis functions for spectroscopy workflows. BATOP’s terahertz spectrometers are used in applications such as non-destructive testing, semiconductor characterization, pharmaceutical inspection, material science, quality control, and THz imaging research. Their ability to analyze materials without physical contact or ionizing radiation makes them valuable for both scientific investigation and industrial inspection processes.

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