Contents
Abstract ii
Acknowledgments iv
List of Illustrations ix
1 Introduction 1
1.1 Terahertz imaging and compressive sensing............... 3
1.2 Scope of this thesis............................ 4
2 Background 6
2.1 Terahertz imaging............................. 6
2.1.1 Time-domain terahertz system.................. 6
2.1.2 Imaging with a time-domain spectrometer........... 11
2.1.3 Other imaging methods ..................... 14
2.1.4 Terahertz imaging applications ................. 17
2.2 Compressive sensing (CS) ........................ 17
2.2.1 CS background.......................... 17
2.2.2 CS imaging applications..................... 21
3 A CS Fourier terahertz imaging system 22
3.1 Imaging setup............................... 22
3.2 Experimental results........................... 23
3.2.1 Fourier reconstruction with full dataset............. 23
3.2.2 CS reconstruction with partial dataset............. 24
3.2.3 CS and phase retrieval...................... 27
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