Specifications
Advanced Features and Benefits
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- NEW: Remote control and data transfer over network
- Fast scanning without optomechanical delay unit
- All-PM fiber laser technology with instantaneous mode locking, for highest stability and reliability
| TERA OSCAT | ||
|---|---|---|
| Antenna model | TERA15-FC* | |
| Spectral range | >3 THz in step mode, >1 THz in rapid mode | |
| Dynamic range | >60 dB in step mode, >35 dB in rapid mode | |
| Total scan range | up to 4 ns (pulse-to-pulse, virtually unlimited) | |
| Rapid scan range | up to 40 ps | |
| Rapid scan rate | >200 waveforms / s | |
| THz frequency resolution | <3 GHz | |
| Scan mode | rapid / step scan | |
| Laser specifications | ||
| Wavelength | 1560 nm | |
| Total average output power | >60 mW | |
| Repetition rate | 250 MHz | |
| Output port configuration | 2 x fiber coupled FC/APC ports, PM fiber | |
| Pulse duration | <90 fs directly from laser, <120 fs after OSCAT delay line | |
| Dimensions / weight | ||
| Optical unit | 450 x 560 x 200 mm³ / 34 kg | |
| THz control electronics | 448 x 132 x 550 mm3 / 10 kg | |
*depending on measurement settings
Description
Our new all-fiber THz spectrometer for fast data aquisition is based on the novel OSCAT (Optical Sampling by CAvity Tuning) technique. It enables THz time-domain spectroscopy without any moving parts. Combined with our TERA Image extension, the system provides a solution for fast THz imaging applications. Similar to the ASOPS technique, the OSCAT offers great flexibility in system configuration and capability of high-speed measurements. TERA OSCAT is a robust and portable solution for both laboratory use and OEM integration, suitable even for harsh industrial environment.
System layout:
Principle of operation:
In the OSCAT technique there is no need for an external moveable delay line. Contrary to the conventional THz-TDS systems, the lengths of the emitter and detector arms are not balanced. The temporal shift Dt between the pulses i (emitter arm) and i+a (detector arm) is determined by the repetition rate frep of the fs laser.
