Photoconductive THz near-field detector

TeraSpike
TD-800-X

A near-field microprobe sensitive to THz field components transversal to the tip axis — down to 3 µm spatial resolution. Each probe is individually tested and ships with a manual and test certificate.

Microprobe · side view (schematic) X-SERIES
SAMPLE / DUT SMP Photo-switch gap 1.5 µm λ 700–860 nm x — transversal THz field res. ↓ 3 µm (HR)
3 µm
Max. spatial resolution
700–860 nm
Excitation wavelength
Transversal (x)
Field sensitivity
SMP
Connection type
Technical specifications

Two options, one probe family.

The TD-800-X is available as HR and HRS. Values per individually tested probe.

ParameterHRHRS
Max. spatial resolution3 µm20 µm
Photo-switch gap size1.5 µm2 µm
Dark current @ 1 V bias< 0.5 nA< 0.5 nA
Photocurrent @ 1 V bias> 0.2 µA> 0.2 µA
Excitation wavelength700–860 nm700–860 nm
Average excitation power0.1–4 mW0.1–4 mW
Connection typeSMPSMP

X-series microprobes are sensitive to THz field components oriented transversal to the probe-tip axis (x-direction). Each probe is individually tested and ships with a manual and test certificate.

Option · HR

Higher bandwidth

The HR option omits the resonant antenna element, providing a somewhat higher bandwidth and the finest spatial resolution (3 µm).

Option · HRS

Enhanced sensitivity

The HRS option adds a resonant antenna element for enhanced sensitivity around 1 THz, trading some spatial resolution.

Where it's used

Built for the near field.

Terahertz research

Metamaterials & waveguides

Probe the transversal near-field of emitters, waveguides, plasmonic and sensor surfaces with low invasiveness.

Chip testing

On-chip device characterization

Map field distributions and isolate faults on-chip with sub-picosecond, contactless time-domain measurements.

Documentation

Downloads.

Ready to specify

Request a TD-800-X quote.

Tell us your excitation source and target resolution — we'll recommend HR or HRS and the right configuration.