Measurement of phase modulation of LCOS SLM Santec SLM-200 and analysis of its applicability for optical reconstruction of images from diffractive elements

Phase liquid crystal (LC) spatial light modulators (SLM) are widely used for optical reconstruction of diffraction optical elements, including holograms. For this purpose high stability and linearity of phase response of SLM is required. In modern high resolution SLM digital signal addressing scheme which leads to emergence of effect of phase shift fluctuations during frame time is applied. In this paper measurements of character and peculiarities of modulation of phase shift of modern high-resolution LC SLM Santec SLM-200 were performed. Optical reconstruction of images from diffraction elements of different types was carried out, the quality of reconstruction and diffraction efficiency were assessed.

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Modern Types of Axicons: New Functions and Applications

Sensors ◽

10.3390/s21196690 ◽

2021 ◽

Vol 21 (19) ◽

pp. 6690

Author(s):

Svetlana N. Khonina ◽

Nikolay L. Kazanskiy ◽

Pavel A. Khorin ◽

Muhammad A. Butt

Keyword(s):

Intensity Distribution ◽

Integrated Circuit ◽

Bessel Beam ◽

Optical Element ◽

Spatial Light Modulators ◽

Optical Antennas ◽

Optical Elements ◽

Photonic Integrated Circuit ◽

Light Modulators

Axicon is a versatile optical element for forming a zero-order Bessel beam, including high-power laser radiation schemes. Nevertheless, it has drawbacks such as the produced beam’s parameters being dependent on a particular element, the output beam’s intensity distribution being dependent on the quality of element manufacturing, and uneven axial intensity distribution. To address these issues, extensive research has been undertaken to develop nondiffracting beams using a variety of advanced techniques. We looked at four different and special approaches for creating nondiffracting beams in this article. Diffractive axicons, meta-axicons-flat optics, spatial light modulators, and photonic integrated circuit-based axicons are among these approaches. Lately, there has been noteworthy curiosity in reducing the thickness and weight of axicons by exploiting diffraction. Meta-axicons, which are ultrathin flat optical elements made up of metasurfaces built up of arrays of subwavelength optical antennas, are one way to address such needs. In addition, when compared to their traditional refractive and diffractive equivalents, meta-axicons have a number of distinguishing advantages, including aberration correction, active tunability, and semi-transparency. This paper is not intended to be a critique of any method. We have outlined the most recent advancements in this field and let readers determine which approach best meets their needs based on the ease of fabrication and utilization. Moreover, one section is devoted to applications of axicons utilized as sensors of optical properties of devices and elements as well as singular beams states and wavefront features.

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Implementation of high-resolution diffractive optical elements on coupled phase and amplitude spatial light modulators

Applied Optics ◽

10.1364/ao.40.006415 ◽

2001 ◽

Vol 40 (35) ◽

pp. 6415 ◽

Cited By ~ 20

Author(s):

Christophe Stolz ◽

Laurent Bigué ◽

Pierre Ambs

Keyword(s):

High Resolution ◽

Spatial Light Modulators ◽

Diffractive Optical Elements ◽

Optical Elements ◽

Light Modulators

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Phase-only transmissive spatial light modulator based on tunable dielectric metasurface

Science ◽

10.1126/science.aaw6747 ◽

2019 ◽

Vol 364 (6445) ◽

pp. 1087-1090 ◽

Cited By ~ 64

Author(s):

Shi-Qiang Li ◽

Xuewu Xu ◽

Rasna Maruthiyodan Veetil ◽

Vytautas Valuckas ◽

Ramón Paniagua-Domínguez ◽

...

Keyword(s):

High Resolution ◽

Spatial Light Modulator ◽

Deflection Angle ◽

Beam Steering ◽

Beam Deflection ◽

Spatial Light Modulators ◽

Light Modulator ◽

Steering Angle ◽

Holographic Display ◽

Light Modulators

Rapidly developing augmented reality, solid-state light detection and ranging (LIDAR), and holographic display technologies require spatial light modulators (SLMs) with high resolution and viewing angle to satisfy increasing customer demands. Performance of currently available SLMs is limited by their large pixel sizes on the order of several micrometers. Here, we propose a concept of tunable dielectric metasurfaces modulated by liquid crystal, which can provide abrupt phase change, thus enabling pixel-size miniaturization. We present a metasurface-based transmissive SLM, configured to generate active beam steering with >35% efficiency and a large beam deflection angle of 11°. The high resolution and steering angle obtained provide opportunities to develop the next generation of LIDAR and display technologies.

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