High power liquid crystal spatial light modulators

Gu, Dong‐Feng; Bing, Wei; Mahajan, Milind; Taber, Donald B.; Winker, Bruce K.; Guthals, D.; Campbell, Blair F.; Sox, D.

doi:10.1117/12.683829

Cited by 11 publications

(5 citation statements)

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“…The withstand power density of the SLM provided by different manufactures or companies [19,[24][25][26]…”

Section: Tablementioning

confidence: 99%

“…They also suggested the use of Tramscon TM electrodes. As a result of this approach, the damage threshold of LC-SLM was found to reach 660 w/cm 2 [19] . Previous research has predominantly concentrated on the optimization of Optically Addressed Spatial Light Modulators (OASLM) at high average power, with a particular emphasis on the aforementioned two aspects.…”

Section: Introductionmentioning

confidence: 96%

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Analysis of the load capacity of optically addressed spatial light modulators based on different laser irradiation spot sizes

韩,

范,

程

et al. 2023

Fifth International Symposium on High Power Laser Science and Engineering (HPLSE 2023)

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“…The withstand power density of the SLM provided by different manufactures or companies [19,[24][25][26]…”

Section: Tablementioning

confidence: 99%

Section: Introductionmentioning

confidence: 96%

Analysis of the load capacity of optically addressed spatial light modulators based on different laser irradiation spot sizes

韩,

范,

程

et al. 2023

Fifth International Symposium on High Power Laser Science and Engineering (HPLSE 2023)

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“…The optical density of liquid crystal which is the active medium of many non-display optical devices is one of the key factors, either in high-power laser applications, [ 33 , 34 ] or in devices working at NIR and MWIR frequencies, especially those for which the working bands are close to C-H vibrations. High red shift observed for partially deuterated or perdeuterated materials can be exploited for enhancing the operating windows of “regular” nondeuterated liquid crystals.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Mesomorphism and the Optical Properties of Alkyl-deuterated Nematogenic 4-[(2,6-Difluorophenyl)ethynyl]biphenyls

et al. 2021

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The synthesis and characterization of new deuterated liquid crystal (LC) compounds based on phenyl tolane core is described in this paper. The work presents an alternative molecular approach to the conventional LC design. Correlations between molecular structure and mesomorphic and optical properties for compounds which are alkyl-hydrogen terminated and alkyl-deuterium, have been drawn. The compounds are characterized by mass spectrometry (electron ionization) analysis and infrared spectroscopy. They show enantiotropic nematic behavior in a broad temperature range, confirmed by a polarizing thermomicroscopy and differential scanning calorimetry. Detailed synthetic procedures are attached. Synthesized compounds show a significantly reduced absorption in the near-infrared (NIR) and medium-wavelength infrared (MWIR) radiation range, and stand as promising components of medium to highly birefringent liquid crystalline mixtures.

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“…Apart from the wide applications in the display industry, it also plays a vital role in the non-display area. LC-based spatial light modulators (SLMs) are widely used in optical beam shaping [14]. LC geometric phase elements are capable of special beam generation, e.g., vortex beam, vector beam or Airy beam [15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Electrically Tunable Terahertz Focusing Modulator Enabled by Liquid Crystal Integrated Dielectric Metasurface

Shen

Wang

et al. 2021

Crystals

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Active lenses with focal tunable properties are highly desired in the modern imaging systems from the visible to the microwaves. In this paper, we demonstrate a terahertz (THz) lens with electrically switchable focal length. It is composed of a large-birefringence liquid crystal (LC) layer infiltrating a dielectric metasurface. When the birefringence of LC is tuned with an external bias, the phase shift of a single meta-unit will change. With parameter sweep using the finite-different time-domain (FDTD) simulation method, meta-units with varying geometries are optimized to achieve a focal length switchable metalens. The numerical results show that the focal length can be switched between 8.3 mm and 10.5 mm at bias OFF and ON states, respectively, which is consistent with the design. A feasible fabrication procedure of the lens is further discussed. Such a device can be designed beyond the THz band to the visible or the microwaves, and may be widely applied in integrated imaging systems.

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High power liquid crystal spatial light modulators

Cited by 11 publications

References 0 publications

Analysis of the load capacity of optically addressed spatial light modulators based on different laser irradiation spot sizes

Analysis of the load capacity of optically addressed spatial light modulators based on different laser irradiation spot sizes

Synthesis, Mesomorphism and the Optical Properties of Alkyl-deuterated Nematogenic 4-[(2,6-Difluorophenyl)ethynyl]biphenyls

Electrically Tunable Terahertz Focusing Modulator Enabled by Liquid Crystal Integrated Dielectric Metasurface

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