3 μm aperture probes for near-field terahertz transmission microscopy | Zendy

Alexander J. Macfaden | Zendy; J. L. Reno | Zendy; Igal Brener | Zendy; Oleg Mitrofanov | Zendy

AI Assistant Blog Pricing

Home ZAIA Blog

Open Access

3 μm aperture probes for near-field terahertz transmission microscopy

Author(s) -

Alexander J. Macfaden,

J. L. Reno,

Igal Brener,

Oleg Mitrofanov

Publication year - 2014

Publication title -

applied physics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.182

H-Index - 442

eISSN - 1077-3118

pISSN - 0003-6951

DOI - 10.1063/1.4861621

Subject(s) - terahertz radiation , optics , aperture (computer memory) , microscopy , wavelength , near and far field , near field scanning optical microscope , physics , transmission (telecommunications) , resolution (logic) , image resolution , field (mathematics) , electromagnetic field , optoelectronics , materials science , optical microscope , telecommunications , computer science , mathematics , quantum mechanics , artificial intelligence , acoustics , pure mathematics , scanning electron microscope

The transmission of electromagnetic waves through a sub-wavelength aperture is described by Bethe's theory. This imposes severe limitations on using apertures smaller than ∼1/100 of the wavelength for near-field microscopy at terahertz (THz) frequencies. Experimentally, we observe that the transmitted evanescent field within 1 μm of the aperture deviates significantly from the Bethe dependence of E ∝ a 3. Using this effect, we realized THz near-field probes incorporating 3 μm apertures and we demonstrate transmission mode THz time-domain near-field imaging with spatial resolution of 3 μm, corresponding to λ/100 (at 1 THz).

The content you want is available to Zendy users.

Already have an account? Click here to sign in.

Having issues? You can contact us here

Accelerating Research