scholarly journals Coherent noise reduction in digital holographic microscopy by averaging multiple holograms recorded with a multimode laser

2017 ◽  
Vol 25 (18) ◽  
pp. 21815 ◽  
Author(s):  
Feng Pan ◽  
Lizhi Yang ◽  
Wen Xiao
Keyword(s):  
Noise Reduction ◽  
Digital Holographic Microscopy ◽  
Coherent Noise ◽  
Multimode Laser ◽  
Holographic Microscopy

Coherent noise reduction of reconstruction of digital holographic microscopy using a laterally shifting hologram aperture

2016 ◽  
Vol 55 (12) ◽  
pp. 121725 ◽  
Author(s):  
Yun Liu ◽  
Zhao Wang ◽  
Junhui Huang ◽  
Jianmin Gao ◽  
Jiansu Li ◽  
...  
Keyword(s):  
Noise Reduction ◽  
Digital Holographic Microscopy ◽  
Coherent Noise ◽  
Holographic Microscopy

scholarly journals Dynamic Speckle Illumination Digital Holographic Microscopy by Doubly Scattered System

Photonics ◽  
2021 ◽  
Vol 8 (7) ◽  
pp. 276
Author(s):  
Yun Liu ◽  
Peihua Bu ◽  
Mingxing Jiao ◽  
Junhong Xing ◽  
Ke Kou ◽  
...  
Keyword(s):  
Time Correlation ◽  
Digital Holographic Microscopy ◽  
Laser Source ◽  
Speckle Reduction ◽  
Single Shot ◽  
Coherent Noise ◽  
Real Time Measurement ◽  
Dynamic Speckle ◽  
Holographic Microscopy ◽  
Speckle Suppression

The coherent noise always exists in digital holographic microscopy due to the laser source, degrading the image quality. A method of speckle suppression using the dynamic speckle illumination, produced by double-moving diffusers, is presented in digital holographic microscopy. The space–time correlation functions are theoretically analyzed from the statistics distribution in the doubly and singly scattered system, respectively. The configuration of double-moving diffusers is demonstrated to have better performance in speckle suppression compared with the single diffuser and moving-static double diffusers cases. The experiment results verify the feasibility of the approach. The presented approach only requires a single shot interferogram to realize the speckle reduction, accordingly it has the potential application in real-time measurement.

Quantitative assessment of noise reduction with partial spatial coherence illumination in digital holographic microscopy

2015 ◽  
Vol 41 (1) ◽  
pp. 111 ◽  
Author(s):  
Jérôme Dohet-Eraly ◽  
Catherine Yourassowsky ◽  
Ahmed El Mallahi ◽  
Frank Dubois
Keyword(s):  
Noise Reduction ◽  
Quantitative Assessment ◽  
Spatial Coherence ◽  
Digital Holographic Microscopy ◽  
Holographic Microscopy
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