Chinese Journal of Lasers, Volume. 39, Issue 9, 909003(2012)
Comparison between 2.52 THz Off-Axis Digital Holography and Focal-Plane Imaging
Performance of focal-plane imaging and off-axis digital holography is studied by the way of the resolution measurement and imaging of watermark and words in pencil with the built 2.52 THz focal-plane imaging and off-axis digital holographic devices. The results validate that the common focal-plane imaging can not achieve relatively high resolution because of the long wavelength of terahertz. The imaging quality is determined by the placed position. Terahertz off-axis digital hologram can improve the resolution of the imaging system; however, the imaging object size is limited by the system resolution. It can be inferred that the focal-plane imaging is more suitable for large object and low resolution imaging.
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Li Qi, Ding Shenghui, Li Yunda, Wang Qi. Comparison between 2.52 THz Off-Axis Digital Holography and Focal-Plane Imaging[J]. Chinese Journal of Lasers, 2012, 39(9): 909003
Category: holography and information processing
Received: May. 14, 2012
Accepted: --
Published Online: Aug. 13, 2012
The Author Email: Qi Li (hit_liqi@yahoo.cn)