Product Introduction

Shanghai Yichi Optoelectronics has launched a 1550nm laser-induced terahertz near-field probe, which can directly excite the near-field probe using a laser of 1500-1600nm. These terahertz probes can be used in conjunction with THz TDS systems with excitation wavelengths below 1600nm. The THz near-field probe provides a low-cost solution to upgrade your THz TDS to a high-resolution terahertz near-field scanning imaging system.

Product Features

- Fine terahertz near-field probe
- Patent design
- Spatial resolution can reach 3um
- Detection frequency range: 0-4THz
- Suitable for all laser based THz systems
- Install standard compatible optomechanical components
- Integrated overload protection circuit
Product parameters

TeraSpike TD-1550-X-	HR-WT	HR-WT-XR
Maximum spatial resolution	40um（20um(#)）	80um
Antenna gap	1.5um	1.5um
Dark current @ 1V Bias	< 4.5 µA	< 4.5 µA
Photoelectric current（*）	> 12 µA	> 12 µA
Excitation wavelength	1500 .. 1600 nm	1500 .. 1600 nm
Average excitation power	1.5 .. 3.5 mW	1.5 .. 3.5 mW
Connection method	SMP	SMP

(*) Focusing size of 20um, voltage transformation of 1V, average excitation power of 3mW.
(#) For front-switch instead of main-switch excitation. Front-switch excitation mode is showing reduced SNR.

Optical path layout - typical transmissive near-field detection optical path

test data

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Shanghai Yichi Optoelectronic Technology Co., Ltd