Super-resolution imaging in digital holography by using dynamic grating with a spatial light modulator

Lin, Qiaowen; Wang, Dayong; Wang, Yunxin; Rong, Lü; Chang, Shifeng

doi:10.1016/j.optlaseng.2014.09.015

Cited by 11 publications

(2 citation statements)

References 21 publications

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“…The careful consideration and management of partially coherent light wave are important for applications of displays, lithography and diffractive optics. Liquid crystal spatial light modulator (LC SLM) has many merits, such as its high resolution, programmability, low cost, low power consumption, light weight et al And it is widely applied in many areas [5][6]. As a phase only modulator, LC SLM can modulate the phase of incident beam with high accuracy.…”

Section: Introductionmentioning

confidence: 99%

A method to adjust the focusing and coherence characteristics of laser beam complexly using a liquid crystal spatial light modulator

Liu

2015

2015 International Conference on Optoelectronics and Microelectronics (ICOM)

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In this paper, a method to adjust the focusing and coherence characteristics at the same time based on liquid crystal spatial light modulator (LC SLM) was proposed. The theory of adjusting the focusing and coherence characteristics of laser beam with a LC SLM is studied in detail. Expressions for beam size and the radius of curvature of the output partially coherent beam from the LC SLM are obtained from the cross-spectral density function. The experiment shows that, by using a LC SLM, we provided a convenient and practical method to adjust the focusing and coherence characteristics of laser beam, and it also made the partially coherent beam coordinate with other optical system to meet different application needs.

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Section: Introductionmentioning

confidence: 99%

A method to adjust the focusing and coherence characteristics of laser beam complexly using a liquid crystal spatial light modulator

Liu

2015

2015 International Conference on Optoelectronics and Microelectronics (ICOM)

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“…The phase retrieval process in conventional systems is relatively easy due to having a large configuration. [1][2][3][4] The 4f optical systems 5 or holographic systems 6 have been used to retrieve the recorded phase and amplitude of the sample at the sensor plane. For lensless microscopy, the diffracted higher spatial frequencies are retrieved through multiangle illumination both in the transverse [7][8] and axial directions.…”

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confidence: 99%

Lensless imaging through multiple phase patterns illumination

Hussain

Liu

et al. 2017

J. Biomed. Opt

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A stable optical system is required to acquire a high-quality image. A motionless lensless setup is designated to obtain high-resolution and large field of view images. The sample is sequentially illuminated with multiple random phase patterns, and the recorded images are subtracted from the system calibration images correspondingly. The resultant images are propagated to the sample plane. The summation of all images yields a final image with resolution of ∼4 μm, field of view of ∼15 mm2, and better signal-to-noise ratio. This technique provides a compact, stable, and cost-effective optical system.

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