Flexible contrast for low-coherence interference microscopy by Fourier-plane filtering with a spatial light modulator

2010 ◽  
Vol 35 (24) ◽  
pp. 4154 ◽  
Author(s):  
Stefan E. Schausberger ◽  
Bettina Heise ◽  
Christian Maurer ◽  
Stefan Bernet ◽  
Monika Ritsch-Marte ◽  
...  
Keyword(s):  
Spatial Light Modulator ◽  
Interference Microscopy ◽  
Light Modulator ◽  
Fourier Plane ◽  
Low Coherence

scholarly journals High Fidelity Spatial Light Modulator Configuration for Photo-Stimulation

2021 ◽  
Vol 9 ◽  
Author(s):  
Samira Aghayee ◽  
Mitchell Weikert ◽  
Phillip Alvarez ◽  
Gabriel A. Frank ◽  
Wolfgang Losert
Keyword(s):  
Spatial Light Modulator ◽  
Signal To Noise Ratio ◽  
Spatial Light Modulators ◽  
High Signal ◽  
High Fidelity ◽  
Light Modulator ◽  
Fourier Plane ◽  
Two Photon ◽  
Light Modulators ◽  
The Brain

For their capacity to shape optical wavefronts in real time into any desired illumination pattern, phase-only Spatial Light Modulators (SLM) have proven to be powerful tools for optical trapping and micromanipulation applications. SLMs are also becoming increasingly utilized in selective photo-stimulation of groups of neurons in the brain. However, conventional SLM based wavefront modulation introduces artifacts that are particularly detrimental for photo-stimulation applications. The primary issue is the unmodulated light that travels along the 0th order of diffraction. This portion of light is commonly blocked at the center of the object plane, which prevents photo-stimulation in the blocked region. We demonstrate a virtual lens configuration that moves the 1st order diffraction with the desired illumination pattern into the Fourier plane of the 0th order light. This virtual lens setup makes the whole field of view accessible for photo-stimulation and eliminates the need for removing the 0th order light in two-photon applications. Furthermore, in an example application to reconstruct a pattern consisting of an array of points, the virtual lens configuration increases the uniformity of the intensities these points. Moreover, diffraction-induced artifacts are also significantly reduced within the target plane. Therefore, our proposed high fidelity configuration yields target points with high signal to noise ratio.

Contrast modification for ultra-high resolution low-coherence interference microscopy by Fourier-plane filtering

2011 ◽  
Author(s):  
Stefan E. Schausberger ◽  
Bettina Heise ◽  
Christian Maurer ◽  
Stefan Bernet ◽  
Monika Ritsch-Marte ◽  
...  
Keyword(s):  
High Resolution ◽  
Interference Microscopy ◽  
Fourier Plane ◽  
Low Coherence

Real-time electron-holographic interference microscopy with a liquid-crystal spatial light modulator

1993 ◽  
Vol 18 (22) ◽  
pp. 1887 ◽  
Author(s):  
Jun Chen ◽  
Tsukasa Hirayama ◽  
Guanming Lai ◽  
Takayoshi Tanji ◽  
Kazuo Ishizuka ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Real Time ◽  
Spatial Light Modulator ◽  
Interference Microscopy ◽  
Light Modulator

Gamma Correction for Green Light Liquid Crystal Spatial Light Modulator and Spatial Light Interference Microscopy Imaging Study

2014 ◽  
Vol 51 (12) ◽  
pp. 121204 ◽  
Author(s):  
陈大强 Chen Daqiang ◽  
郑明杰 Zheng Mingjie ◽  
李志芳 Li Zhifang ◽  
吴华钦 Wu Huaqin ◽  
王由平 Wang Youping
Keyword(s):  
Liquid Crystal ◽  
Spatial Light Modulator ◽  
Green Light ◽  
Imaging Study ◽  
Interference Microscopy ◽  
Gamma Correction ◽  
Light Modulator ◽  
Microscopy Imaging ◽  
Light Interference

Lateral Shearing Interferometer based on a Spatial Light Modulator in the Fourier Plane

Fringe 2009 ◽  
2009 ◽  
pp. 1-6 ◽  
Author(s):  
Claas Falldorf ◽  
Reiner Klattenhoff ◽  
Achim Gesierich ◽  
Christoph v. Kopylow ◽  
Ralf Bergmann
Keyword(s):  
Spatial Light Modulator ◽  
Light Modulator ◽  
Fourier Plane ◽  
Lateral Shearing Interferometer ◽  
Lateral Shearing

Contrast modification for ultra-high resolution low-coherence interference microscopy by Fourier-plane filtering

2011 ◽  
Author(s):  
Stefan E. Schausberger ◽  
Bettina Heise ◽  
Christian Maurer ◽  
Stefan Bernet ◽  
Monika Ritsch-Marte ◽  
...  
Keyword(s):  
High Resolution ◽  
Interference Microscopy ◽  
Fourier Plane ◽  
Low Coherence
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