Scanning terahertz probe

摘要

A THz radiation probe (1) for examining an object (8), the probe comprising a first portion configured to be inserted into an opening of said object in a first direction (5), said probe further comprising at least one THz emitter (15), directing means (7) for directing THz radiation emitted from said emitter to said object via an aperture (2) located at said first portion and subsequently from said object to at least one THz detector (17) and, means for scanning said emitted THz radiation across said object in a scan direction, said scan direction having a component in said first direction (5).

主权项

1. A THz radiation probe for examining an object, the probe comprising a first portion configured to be inserted into an opening of said object in a first direction, said probe further comprising
at least one THz emitter, a directing unit for directing THz radiation emitted from said emitter to said object via an aperture located at said first portion and subsequently from said object to at least one THz detector and, a scanning unit for scanning said emitted THz radiation across said object in a scan direction, said scan direction having a component in said first direction, wherein the directing unit comprises an elongate solid dielectric member, the elongate direction of the elongate solid member being parallel to the first direction, the elongate solid dielectric member comprising a plane surface reflective to THz radiation angled to the first direction, the refractive index of the solid dielectric member and the plane surface being configured such that THz radiation emitted by the emitter undergoes reflection at the plane surface and is directed towards the aperture, the scanning of the THz beam across the plane surface causing the scanning of the THz beam across the aperture.