Sunday, May 15, 2016
Abstract- Presentation-DIGITAL HOLOGRAPHY AT TERAHERTZ FREQUENCIES
Digital Holography is explored in the terahertz (THz) frequency region (between 0.230 and 0.740 THz) with highly coherent, frequency tunable continuous wave sources. Terahertz digital holography is motivated by two characteristics: terahertz radiation penetrates through many dielectric materials, and the associated wavelengths are sufficiently short to generate and record holograms using optical components. An off-axis Fresnel digital holography experiment was constructed to acquire THz amplitude and phase holograms, which are digitally reconstructed using Fresnel and angular spectrum reconstruction methods. While transverse resolution was on the order of the wavelength, depth resolution of nearly lambda/300 (2 µm) is reported.