Pure phase spatial light modulator

Pure phasespatial light modulator

GAEA 10 million pixel pure phase spatial light modulator has high diffraction efficiency, dynamic range of 1000:1, LCOS micro display technology phase or intensity modulation, resolution of 4094 * 2464 pixels, pixel size of 3.74 μ m, and is mainly used in laser beam shaping, coherent wavefront modulation, phase modulation, optical tweezers, holographic projection, and laser pulse shaping.

Product Introduction

German Holoeye spatial modulator(SLM) is based on liquid crystal microdisplay technology,Divided into transmissive and reflective types. This system can modulate the intensity and phase distribution of light in space and is a dynamic optical element. Optical functions and signals can be directly displayed by computer based on design or image source. Unique structure, using VGA or DVI signals output by an image card, modulated through electrical addressing, achieving simplicity.

Product features of German Holoeye spatial modulator:

LCOS microdisplay technology

◇ Transmission and reflection

◇ Phase or intensity modulation

◇ Pixels up to 1920 x 1080

◇ 2 π range phase shift

◇ 1000:1 dynamic range

◇ High diffraction efficiency and large filling factor

◇ We also provide Kit and OEM types, which use board control, are inexpensive, compact in size, and can be easily integrated into the system by customers

Application areas of German Holoeye spatial modulator:

Display application; Imaging&Projection; Beam splitting; Laser beam shaping; Coherent wavefront modulation; Phase modulation; Optical tweezers; Holographic projection; Laser pulse shaping

German Holoeye spatial modulator product model:

Frequently Asked Questions (FAQ):

Question 1: Pluto calibrates a laser with a wavelength of 650 nanometers by uploading a graph with grayscale values between 0-255 and applying phase modulation corresponding to 0-2pi. If a laser with a wavelength of 532 nanometers is used, what is the range of grayscale values that can be uploaded to achieve phase modulation between 0-2pi.

Answer: If a 532nm laser is used, the phase modulation range will be larger than 650nm. Generally speaking, the SLM phase modulation range will increase over short wavelengths.

Question 2: What specific requirements do LC-R2500 and other models have for microcomputer systems?

Question 3: It is mentioned in the manual that a polarizer and a analyzer need to be added during the phase calibration process. Do you still need to add a polarizer and an analyzer when using SLM?

Answer: During normal use, it is also necessary to add a polarizer and a analyzer. Moreover, it is generally required that the polarization direction of the polarizer be consistent with the long side direction of the SLM microdisplay panel, without significantly affecting the incident polarization state, in order to achieve the goal of only changing the phase.

Question 4: What are the restrictions on the angle between the incident beam and the SLM normal, and what is the maximum angle approximately?

Answer: The incident angle is generally controlled within 6 degrees, which has a relatively small impact on the corresponding polarized light.

Question 5: During SLM modulation, sometimes the central spot is still relatively strong, which leads to a decrease in diffraction effect. What is the reason for this? How to eliminate it?

Answer: Generally speaking, the diffraction effect is affected by the filling factor and the incident polarization state. In use, the influence of incoherent light should be eliminated by inserting a polarizer and analyzer.

Question 6: What issues should be noted when using Holoeye spatial light modulators?

Answer: 1. Anti static measures, especially when installing LCD display panels, anti-static gloves and anti-static wrists should be worn; 2、 The connection between the LCD display panel and the controller should avoid frequent plugging and unplugging; 3、 The connection of spatial light modulator components should be carried out in a power-off state; 4、 The usage environment should avoid high temperature and high humidity, and ensure a certain degree of cleanliness.

Question 7: Can Holoeye spatial light modulator be used for pulsed light?

Answer: Holoeye spatial light modulator can be used for femtosecond pulse shaping, and the specific damage threshold depends on pulse energy, repetition rate, spot size, etc. Generally, the continuous optical power density is 2W/cm2, and it can withstand higher power under cooling conditions.

Question 8: What is the response time for the Pluto series?

答: VIS: ~25ms； NIR: ~30ms； TELCO:~ 40ms。

Question 9: What is the difference between SLM Pluto and HEO 1080P?

Answer: Pluto and 1080P use the same LCD display panel, but Pluto's controller has a smaller size and is an improved model by the manufacturer.

Question 10: Are there any users using Holoeye spatial light modulators?

Answer: Our clients are located in many countries and regions around the world, and Holoeye's spatial light modulators have a wide range of applications worldwide. You can find many application papers on Holoeye's spatial light modulators. Famous users in China include the Institute of Physics, Chinese Academy of Sciences, Changchun Institute of Optics and Fine Mechanics, University of Science and Technology of China, and Tianjin University

The spatial light modulator (SLM) produced by the German company HOLOEYE is based on projection/reflection LCD microdisplays. This device can modulate the amplitude and phase of light, especially as a dynamic optical device.

The displayed optical functions or information come directly from optical design software or information sources and can be transmitted through computers. SLM can be used as an external plug and play display without the need for other optical components, by operating through the VGA or DVI ports of a typical PC graphics card. SLM can be conveniently placed in existing optical paths.

To ensure the optical quality of the device (such as phase modulation), HOLOEYE measured each individual device.

This system can modulate the intensity and phase distribution of light in space and is a dynamic optical element. Optical functions and signals can be directly displayed by computer based on design or pixels. Unique structure, using DVI or HDMI signals output by an image card, modulated through electrical addressing for simple implementation.

The most common spatial light modulator is a liquid crystal spatial light modulator, also known as a liquid crystal light valve. It can be widely applied in fields such as optical computing, pattern recognition, information processing, and display, and has broad application prospects.

Driver software and application software

All HOLOEYE spatial light modulators are controlled by HOLOEYE's driver software, which can work on all versions of Windows operating platforms, control all relevant image parameters, and provide simple gamma control for configuring spatial light modulators to achieve different applications and wavelengths. In addition, carefully designed spatial light modulator software can achieve various optical functions such as gratings, lenses, axial cones, and apertures, and can calculate diffractive optical devices (DOEs) based on user set images.