TeraScan
Frequency-Domain Terahertz Platform
• TopSeller systems for cw-THz spectroscopy • Includes cutting-edge GaAs or InGaAs photomixers
• Highest dynamic range: TeraScan 1550 • Highest scan range: TeraScan 780 • Digital control electronics DLC Smart
TOPTICA’s TeraScan platforms are well-established “TopSeller” configurations for frequency-domain terahertz spectroscopy. The systems combine mature DFB diode lasers with state-of-the-art GaAs or InGaAs photomixers. The TeraScan 780 offers an outstanding bandwidth, and the TeraScan 1550 sets new benchmarks in terms of terahertz power and dynamic range. Both systems feature TOPTICA's proprietary “DLC smart” control electronics.
Applications
• Plastic Inspection
• Paint and coating layers
• Paper quality control
• Hydration monitoring
• Communication
• Ultrafast dynamics
• Gas sensing
• Fundamental physics
Specifications
Specification
TeraScan 780 TeraScan 1550 Lasers
TeraBeam 780
TeraBeam 1550
Difference Frequency Tuning
1.8 THz (2.0 THz typ.)
1.2 THz (up to 2.7 THz with Tuning Range Extension)
Tuning Speed
Up to 100 GHz / sec
Frequency accuracy
< 2 GHz
Minimum frequency step size
< 10 MHz
Terahertz emitter
#EK-000831, GaAs photomixer
#EK-000724, InGaAs photodiode
Terahertz receiver
#EK-000832, GaAs photomixer
#EK-000725, InGaAs photomixer
Antenna type
Log-spiral
Bow-tie
Terahertz polarization
Circular
Linear
Emitter and receiver package
Cylindrical, ∅ 1", Integrated Si lens and SM/PM, fiber pigtail
Cylindrical, ∅ 25 mm, Integrated Si lens and SM/PM, fiber pigtail
Emitter and receiver bandwidth
Approx. 3 THz
Terahertz power (typ.)
2 µW @ 100 GHz, 0.3 µW @ 500 GHz
100 µW @ 100 GHz, 10 µW @ 500 GHz
Terahertz dynamic range
80 dB @ 100 GHz
90 dB @ 100 GHz
(300 ms integration time)
70 dB @ 500 GHz
70 dB @ 500 GHz
Laser size and weight
Two DFB pro L laser heads, each with dimensions 90 x 90 x 244 mm (H x W x D), 2,8 kg
Two DFB pro BFY laser heads, each with dimensions 60 x 120 x 165 mm (H x W x D), 1 kg
Control unit
DLC smart
Controller size (H x W x D) + weight
19" and 1 RU (H x W x D: 45 x 480 x 290 mm), 4 kg
Computer interface
Ethernet
Software
Control software with GUI + Remote command interface
Key advantages
High bandwidth with one set of lasers
High terahertz power, compact laser unit