T-Sweeper: Real-Time Frequency-Domain Terahertz System

At a Glance

• Fiber-coupled terahertz frequency-domain spectrometer operating at 1.5 μm optical wavelength

Technical Background

Robust and agile terahertz (THz) systems are the prerequisite for transferring THz technologies from research facilities to industrial environments. The T-Sweeper realtime continuous wave THz system is based on mature telecom components, operating at an optical wavelength of 1.5 μm. Utilizing HHI’s fiber-coupled continuous wave THz emitter and detector modules, the T-Sweeper provides an unique combination of flexibility, high performance and high speed. This enables the adaptation of the T-Sweeper to your specific application.

Features 

• Turnkey operation
• Fully fiber-coupled
• No moving parts
• Realtime data acquisition

Applications

• High-resolution terahertz spectroscopy
• Industrial process control
• Non-contact thickness measurement

Specifications

• Power at: 1 THz > 1 μW
• Frequency resolution: 1 GHz
• Peak dynamic range:
  >70 dB single sweep (14 ms)
  >100 dB 1 min average
• Size: 19“, 2U (11 x 48 x 36 cm³)
• Weight: 5 kg

1.3 THz mode

• Sweep range: 1.3 THz
• Acquisition time:
  5 ms per spectrum
• Effective bandwidth:
  1.3 THz in single shot

Broadband mode

• Sweep range: >4 THz
• Acquisition time:
  14 ms per spectrum
• Effective bandwidth:
  3 THz for single shot
  >4 THz for 1000 averages