Mid infrared digital holography and terahertz imaging / / Massimiliano Locatelli.

• Superior document: Premio Tesi di Dottorato ; 42
• VerfasserIn: Locatellim, Massimiliano,
• Place / Publishing House: Firenze : : Firenze University Press,, 2014
• Year of Publication: 2014
• Language: English
• Series: Premio Tesi di Dottorato ; 42.
• Physical Description: 1 online resource (90 pages) :; illustrations; digital, PDF file(s).

Mid IR and Far IR (THz) regions have been attracting a continuously growing interest, especially for imaging applications. Mid IR imaging systems are widespread in the military, security and medical fields and are, consequently, in continuous development. Even greater expectation is placed on THz imaging techniques, because of the well-known capacity of THz radiation to penetrate many common materials and to provide important spectroscopic information about various strategic stuffs. In this scenario Digital Holography, a quite recent interferometric imaging technique, is proving to be mature enough to play a key role among the other imaging techniques, both in the Mid IR and in the Far IR.

Table of Contents

Introduction -- Chapter 1 -- Analog and digital holography -- 1. Analog holography -- 1.1 Wavefront recording -- 1.2. Wavefront reconstruction -- 1.3 On-axis and off-axis holography -- 2. Digital holography -- 2.1 Wavefront recording -- 2.2 Wavefront reconstruction -- 2.3 Advantages of digital holography -- Chapter 2 -- Infrared digital holography -- 1. Infrared radiation, sources and detectors -- 1.1 Infrared radiation -- 1.2 Sources -- 1.3 Detectors -- 2. Advantages and disadvantages of IR DH -- Chapter 3 -- Mid IR digital holography experiments -- 1. Experimental apparatus -- 2. Experimental setups and results -- 2.1. First results -- 2.2 Super resolution by means of synthetic aperture -- 2.3 Human size holograms -- 2.4 Visible analog reconstruction of IR digital holograms -- 2.5 Smoke and flames hidden object holograms -- Chapter 4 -- Terahertz imaging experiments -- 1. Experimental apparatus -- 2 Experimental setups and results -- 2.1 THz imaging with single point detector -- 2.2 Toward Terahertz digital holography -- Chapter 5 -- Conclusions -- List of Publications -- Bibliography.