Electro-vacuum terahertz sources

Electro-vacuum terahertz sources

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Up to 1 W output power

80—360 GHz frequency range

Electronic frequency tunability

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Continuous wave operation

Backward-wave oscillator technology

Customer-focused solutions

Powerful terahertz sources

TeraSense has mastered technology to manufacture powerful electro-vacuum terahertz sources. The technology resides on a backward wave oscillator effect. An electron gun emits an electron beam that is longitudinally focused by an external magnetic field. The magnetic field is created by a permanent NdFeB magnet. The beam is interacting with a slow-wave structure. As a result, a traveling wave that moves backwards against the beam is generated. The wave is coupled to the output waveguide near the electron gun. By changing the acceleration voltage, the frequency of the device can be electronically tuned in a certain range. The electro-vacuum terahertz sources generate an immense output power. This property opens the doors for a number of long-awaited applications in terahertz frequency range.

Backward-wave oscillator specifications

Generator type Standard frequency Custom frequency Frequency tunability Linewidth Peak power Oscillator weight (dimensions)
TERASOURCE-3 100 GHz 80-120 GHz 10 GHz < 10 MHz 0.5-1 W 5 kg (18x18x18 cm)
TERASOURCE-2 140 GHz 120-160 GHz 15 GHz < 15 MHz 0.5-0.75 W 8 kg (18x18x18 cm)
TERASOURCE-1.5 200 GHz 160-240 GHz 20 GHz < 20 MHz 0.2-0.5 W 10 kg (18x18x18 cm)
TERASOURCE-1 300 GHz 240-360 GHz 30 GHz > 30 MHz 0.05-0.1 W 13 kg (18x18x18 cm)

* Clients can order terahertz source with a specific frequency from the custom frequency ranges.
Such orders are treated as customization, and may require extra production time and resources.

* All listed terahertz sources require water cooling.

Power supply specifications

Output voltage: 0-5 kV
Beam current: 0-200 mA
Voltage ripple: < 0.5 V
Heater voltage: 0-5 V
Heater current: 0-7 A
Weight / Dimensions: 20 kg (45x45x20 cm)

* The power supply is universal and fits to all TERASOURCES tubes.

Typical frequency dependences

Typical-frequency-dependences

* The peak structure of the frequency dependency can be tuned mechanically.

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Electro-vacuum terahertz sources

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