Analog Spatial Light Modulators Based on Micromirror Arrays

Dauderstädt, Ulrike; Dürr, Peter; Gehner, Andreas; Wagner, Michael; Schenk, Harald

doi:10.3390/mi12050483

Cited by 5 publications

(2 citation statements)

References 25 publications

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“…additive manufacturing [30], optical ablation [107], volumetric [101] and nonlinear imaging [108]. According to recent reports [109][110][111][112], such devices are currently under intensive development and already available to the first users.…”

Section: Micro-electro-mechanical System Based Slmmentioning

confidence: 99%

Controlling light propagation in multimode fibers for imaging, spectroscopy, and beyond

Cao¹,

Čižmár²,

Turtaev³

et al. 2023

Adv. Opt. Photon.

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Light transport in a highly multimode fiber exhibits complex behavior in space, time, frequency and polarization, especially in the presence of mode coupling. The newly developed techniques of spatial wavefront shaping turn out to be highly suitable to harness such enormous complexity: a spatial light modulator enables precise characterization of field propagation through a multimode fiber, and by adjusting the incident wavefront it can accurately tailor the transmitted spatial pattern, temporal profile and polarization state. This unprecedented control leads to multimode fiber applications in imaging, endoscopy, optical trapping and microfabrication. Furthermore, the output speckle pattern from a multimode fiber encodes spatial, temporal, spectral and polarization properties of the input light, allowing such information to be retrieved from spatial measurements only. This article provides an overview of recent advances and breakthroughs in controlling light propagation in multimode fibers, and discusses newly emerging applications.

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Section: Micro-electro-mechanical System Based Slmmentioning

confidence: 99%

Controlling light propagation in multimode fibers for imaging, spectroscopy, and beyond

Cao¹,

Čižmár²,

Turtaev³

et al. 2023

Adv. Opt. Photon.

View full text Add to dashboard Cite

show abstract

“…However, multiple studies focused on the increase/reduction of reflectivity for a certain direction and the realization of additional driving forces [18][19][20]. Currently, no desirable solution is available to regulate the reflection characteristics of reflective optical surfaces, such as working ranges, luminance gain intervals, and gain values, by using microstructures.…”

Section: Introductionmentioning

confidence: 99%

Micromirror Array with Adjustable Reflection Characteristics Based on Different Microstructures and Its Application

Cao,

Xue,

Deng

et al. 2024

Micromachines

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The conventional reflective optical surface with adjustable reflection characteristics requires a complex external power source. The complicated structure and preparation process of the power system leads to the limited modulation of the reflective properties and difficulty of use in large-scale applications. Inspired by the biological compound eye, different microstructures are utilized to modulate the optical performance. Convex aspheric micromirror arrays (MMAs) can increase the luminance gain while expanding the field of view, with a luminance gain wide angle > 90° and a field-of-view wide angle close to 180°, which has the reflective characteristics of a large gain wide angle and a large field-of-view wide angle. Concave aspheric micromirror arrays can increase the luminance gain by a relatively large amount of up to 2.66, which has the reflective characteristics of high gain. Industrial-level production and practical applications in the projection display segment were carried out. The results confirmed that convex MMAs are able to realize luminance gain over a wide spectrum and a wide range of angles, and concave MMAs are able to substantially enhance luminance gain, which may provide new opportunities in developing advanced reflective optical surfaces.

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