Terahertz Time-Domain Near-Field Microscopy

Measurement

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TeraNova > Services > Terahertz Time-Domain Near-Field Microscopy

Examples:

(Left) Photograph of an epitaxially grown GaAs layer. The right-low quarter of the layer has been removed for referencing. (Right) Carrier life-time map obtained by photo-excitation the GaAs layer at 800 nm and measurements of the THz near-field transmission. The carrier life-time map is taken in area of 1 mm x 1 mm at the center of the sample.


Terahertz Time-Domain Near-Field Microscopy


High-spatial resolution THz near-field microscope. The THz microscope allows to measure the THz radiation transmitted through a sample at the surface with a scanning near-field probe. By using near-field detection, this setup overcomes the main limitation of THz spectroscopy, i.e., the spatial resolution. The combination of THz near-field microscopy with optical pump provides a unique instrument for the investigation of the transient photo-conductivity and the carrier life-time of photo-excited semiconductors.

More information about our THz nearfield microscope can be found here



Specifications:


• THz bandwidth: 0.07 – 1 THz
• Scanning area: 1 cm2
• Spatial resolution: appr. 25 μm
• Excitation wavelength: 400 – 1000 nm
• Time resolution: 100 fs
• Possibility of detecting electric field components along x, y and z directions


kvk number: 75646285

VAT number: NL860351518B01

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