We presented the digital holography (DH) system with enhanced image quality. While conventional DH uses highcoherence laser for illuminations, the speckle noise included in the image degrades the quality of the reconstructed data. To reduce the noise regards to the light source, lower-coherence light source could be applied in DH system. In this paper, the quantum dot (QD) based wavelength converter is utilized as the light source. Compared with light-emitting diode (LED), QD-based light source could be applied to versatile system, including dual-wavelength DH. Due to the low coherence both temporally and spatially, spatial filtering and collimation is presented. Also, numerical processes including noise reduction and aberration compensation is described to enhance the quality of the image. By experimental verifications, the proposed DH system shows better quality compared with conventional system, which is enough to utilize the quantitative measurement.
|Title of host publication||Ultra-High-Definition Imaging Systems|
|Editors||Seizo Miyata, Toyohiko Yatagai, Yasuhiro Koike|
|Publication status||Published - 2018|
|Event||Ultra-High-Definition Imaging Systems 2018 - San Francisco, United States|
Duration: 2018 Jan 31 → 2018 Feb 1
|Name||Proceedings of SPIE - The International Society for Optical Engineering|
|Other||Ultra-High-Definition Imaging Systems 2018|
|Period||18/1/31 → 18/2/1|
Bibliographical noteFunding Information:
This work was supported by the National Research Foundation of Korea(NRF) Grant funded by the Korean Government(MSIT) (No. 2015R1A5A1037668).
© 2018 SPIE.
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Computer Science Applications
- Applied Mathematics
- Electrical and Electronic Engineering