cw Terahertz Generation – High Precision Extension

High Precision Extension for TOPTICA’s cw terahertz package: iScan interferometer for frequency control.

Ultimate resolution in frequency-domain terahertz applications
Patented quadrature interferometer design
Power and frequency control of seed lasers
THz accuracy: Typ. 100 MHz absolute, 1 MHz relative
SM/PM fiber array included (2 inputs, 2 tap outputs, 2 main outputs)
Control electronics with USB 2.0 interface
Requires Standard Package
Can be used with High Power Extension (recommended)

Ultimate spectral resolution is achieved with the High Precision Extension. The frequency of each laser is adjusted with an accuracy of typ. 1.5 MHz (beat linewidth @ 80 ms), using a patented interferometer design. This stability translates directly into the linewidth and resolution of the terahertz signal, achieving the highest resolution of any tunable cw terahertz system on the market.

Technical Information

Specifications:
Wavelength range	853 + 855 nm 1550 nm Other ranges on request
Interferometer	2 x iScan™(quadrature interferometer)
Laser power (fiber output)*	2 x 40 mW (main outputs)
Scan range per diode	± 1.3 nm @ 850 nm ± 2.2 nm @ 1550 nm
Frequency accuracy	100 MHz absolute (typ.) 1 MHz relative
Frequency control	External PC, USB 2.0 interface
Software	Visual Basic sample program included
THz scan range	Typ. 0 – 1800 GHz @ 850 nm Typ. 0 – 1200 GHz @ 1550 nm
Operating temperature	15 – 30° C
Electronics	19” rack for the two iScans
Operating voltage	100..120 V / 220..240 V AC 50..60 Hz (auto detect)