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Terahertz Near-Field Testing

Optical-Pump Terahertz Near-Field Imaging System

Specifications

Pump Laser SourceNear-Field MicroscopeTechnical Specifications
● Model: customized
● Repetition rate: 100 MHz
● Wavelength: 780 nm
● Output: 4 ports
Two ports: generate terahertz time-domain spectroscopy
Two ports: pump laser
● 780 nm, 250 mW
● 1560 nm, 500 mW
● Power ratio between the two ports freely switchable		● Model: JW-AFM
● Scan range: > 91 μm × 91 μm
● AFM probe positioning travel: X ≥ 50 mm, Y ≥ 10
mm, Z ≥ 5 mm
● Coarse positioning accuracy: better than 200 nm
● Positioning accuracy: < 200 nm
● Open optical path design
● Equipped with optical bright-field microscope, 5 megapixels		Terahertz far-field specifications:
● Spectrum: 0.1–4 THz
● Signal-to-noise ratio: > 80 dB
● Transmission/reflection mode switching
 
Terahertz near-field specifications:
● Near-field transmission spectral range: 0.5–2.2 THz
● Near-field resolution: < 50 nm