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Item # EXULUS-4K1/M was discontinued on February 24th, 2023. For informational purposes, this is a
copy of the website content at that time and is valid only for the stated product.
►
Reflective 2D Phase Only Spatial Light Modulators (SLMs)
►
400 - 850 nm, 650 - 1100 nm, or 1550 nm Operating Wavelengths
►
Available Resolutions: 1920 x 1080, 1920 x 1200, or 3840 x 2160
►
Highly Stable Phase Control with Minimal Flickering
O V E R V I E W
Features
Liquid Crystal on Silicon (LCoS) with Reflective Coating
Panel Resolutions: 1920 x 1080, 1920 x 1200, or 3840 x
2160
Operating Wavelengths: 400 - 850 nm, 650 - 1100 nm, or 1550 nm
High-Power Models Available for 400 - 850 nm or 650 - 1100 nm Operating Ranges
All-in-One and Separate-Panel Mounting Configurations
Liquid Cooling Module Included on SLM Head
Fill Factor: >90% (Varies by Model)
Independent Horizontal and Vertical SLM Panel Tilt Adjustments (Standard SLM
Models Only)
Trigger Output for Timing Control of Other Devices (All Models Except
EXULUS-HD1)
Fast Frame/Refresh Rates up to 180 Hz (EXULUS-HD1 Only, Using
Frame Boost)
Customizations Available:
Panel and Controller in Separate Units (Standard SLM Models
Only)
Other Retardance Ranges (Contact Tech Support for Details)
®
Thorlabs' Exulus
Spatial Light Modulators (SLMs) employ Liquid Crystal on
Silicon (LCoS) technology to produce high-resolution, high-speed reflective
phase modulation with individually addressable pixels. This phase control is
EXULUS-4K1/M - February 24, 2023
S P A T I A L L I G H T M O D U L A T O R S
EXULUS-HD3HP
EXULUS-4K1
Removable SLM Head,
3840 x 2160 (4K UHD),
1920 x 1200 (WUXGA),
400 - 850 nm
650 - 1100 nm
Generated Hologram Projection. For Details,
Click to Enlarge
The Exulus SLMs (excluding the high-
power SLMs) are provided with a
magnetic cover; when the SLM is in
use, the cover can be attached to the
designated area on the housing (sides
for the HD1 and 4K1 models and back
Image Generated by SLM Using Computer-
See the App Note Tab
Applications
Wavefront Correction
Optical Trapping
Beam Steering
Pulse Shaping
Adaptive Optics
Holography
Laser Processing
Lithography
Click to Enlarge
Each Exulus SLM features multiple 8-
32 (M4) taps for post mounting. For a
list of items used in this setup, see the
App Note tab.
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Related Manuals for THORLABS EXULUS-4K1
Summary of Contents for THORLABS EXULUS-4K1
- Page 1 EXULUS-4K1/M - February 24, 2023 Item # EXULUS-4K1/M was discontinued on February 24th, 2023. For informational purposes, this is a copy of the website content at that time and is valid only for the stated product. S P A T I A L L I G H T M O D U L A T O R S ►...
- Page 2 *HDMI is a trademark or registered trademark of HDMI Licensing Administrator, Inc. DisplayPort is a trademark owned by the Video Electronics Standards Association (VESA) in the United States and other countries. The use of such trademarks by Thorlabs does not constitute or imply any affiliation with or endorsement or sponsorship by their respective trademark owners.
- Page 3 a. Complete specifications may be found on the Specs tab b. Angles of incidence other than 0° will result in phase shifts that differ from the programmed pattern. Angles of up to 10° are possible without significantly affecting performance. c. Frame Boost Mode (referred to as Triple Mode in the software) plays the R, G, and B channels of the video signal in succession, for an overall frame rate of 180 Hz.
- Page 4 Item # EXULUS-HD2 EXULUS-HD3 EXULUS-HD4 Panel Resolution 1920 x 1200 (WUXGA) Type Liquid Crystal on Silicon (LCoS) with Reflective Coating Operating Wavelength 400 - 850 nm 650 - 1100 nm 1550 nm Panel Active Area 15.42 mm x 9.66 mm Pixel Pitch 8 µm Fill Factor...
- Page 5 ) icons below. f. Ambient temperature fluctuations may cause the characteristics of your SLM to change. Using it at an ambient temperature of 25 °C is recommended. Item # EXULUS-4K1(/M) Panel Resolution 3840 x 2160 (4K UHD) Type Liquid Crystal on Silicon (LCoS) with Reflective Coating...
- Page 6 Pixel Pitch 3.74 µm Fill Factor >90% Reflective Coating Aluminum Average Reflectance 64% (Typical) Phase / Retardance Range 2π at 633 nm 0° Angle of Incidence Optic Axis 45° Reflected Wavefront Distortion <λ/2 @ 633 nm 5 W/cm (532 nm, Ø0.0107 mm) Damage Threshold Pulsed (ns) 0.63 J/cm...
- Page 7 Phase Patterns Used to Measure Diffraction Efficiency...
- Page 8 16.7 ms (60 Hz frame rate, EXULUS-HD1, EXULUS-HD2, EXULUS-HD3, EXULUS-HD4, EXULUS-HD2HP, and with our EXULUS-HD1 and EXULUS-4K1 EXULUS-HD3HP) or 33.3 ms (30 Hz, EXULUS-4K1) in standard mode. The EXULUS-HD1 also features a triple SLMs. mode; if RGB images are used then the RGB channels will be played in succession for an overall frame rate of 180 Hz.
- Page 9 SLM panel. In standard mode, grayscale video can be played at a 60 Hz (EXULUS-HD1, EXULUS- HD2, and EXULUS-HD4) or 30 Hz (EXULUS-4K1) frame rate. In triple mode (EXULUS-HD1 only), a color video will play the R, G, B channels in succession at a 180 Hz frame rate.
- Page 10 Two-dimensional spatial light modulators (SLMs) offer individually addressable pixels of phase shift. ® Thorlabs' Exulus 2D SLM is fabricated with liquid crystal on silicon (LCoS) technology, which is based on display technology. This allows it to provide far more pixels than lower-order phase modulators such as segmented or deformable mirrors.
- Page 11 Holographic Projection We show here a holographic projection as one of the applications of the Exulus SLM. Figure 2 shows a typical setup required to realize a 2D holographic projection using the EXULUS-HD1. A collimated laser beam is incident on the SLM panel; best results for holographic projection are obtained using a beam size just smaller than Ø7 mm.
- Page 12 zero-order spot remains collimated at the original beam size. Figure 5 shows the focusing effect that is added to the CGH as well as the final processed CGH pattern sent to the SLM panel; in this example, the focal length was changed to 100 mm in the software; the other software settings remained unchanged. Click to Enlarge Click to Enlarge Figure 5: a.
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Page 13: Testing Method
Testing Method Thorlabs' LIDT testing is done in compliance with ISO/DIS 11254 and ISO 21254 specifications. First, a low-power/energy beam is directed to the optic under test. The optic is exposed in 10 locations to this laser beam for 30 seconds (CW) or for a number of... - Page 14 Thorlabs expresses LIDT for CW lasers as a linear power density measured in W/cm. In this regime, the LIDT given as a linear power density can be applied to any beam diameter; one does not need to compute an adjusted LIDT to adjust for changes in spot size, as demonstrated by the...
- Page 15 The calculation above assumes a uniform beam intensity profile. You must now consider hotspots in the beam or other non-uniform intensity profiles and roughly calculate a maximum power density. For reference, a Gaussian beam typically has a maximum power density that is twice that of the uniform beam (see lower right). Now compare the maximum power density to that which is specified as the LIDT for the optic.
- Page 16 adjust for changes in spot size. This calculation assumes a uniform beam intensity profile. You must now adjust this energy density to account for hotspots or other nonuniform intensity profiles and roughly calculate a maximum energy density. For reference a Gaussian beam typically has a maximum energy density that is twice that LIDT in energy density vs.
- Page 17 calculator, enter the specified LIDT value of the optic under consideration and the relevant parameters of your laser system in the green boxes. The spreadsheet will then calculate a linear power density for CW and pulsed systems, as well as an energy density value for pulsed systems.
- Page 18 *HDMI is a trademark or registered trademark of HDMI Licensing Administrator, Inc. The use of such trademark by Thorlabs does not constitute or imply any affiliation with or endorsement or sponsorship by such trademark owner.
- Page 19 *HDMI is a trademark or registered trademark of HDMI Licensing Administrator, Inc. The use of such trademark by Thorlabs does not constitute or imply any affiliation with or endorsement or sponsorship by such trademark owner.
- Page 20 *HDMI is a trademark or registered trademark of HDMI Licensing Administrator, Inc. The use of such trademark by Thorlabs does not constitute or imply any affiliation with or endorsement or sponsorship by such trademark owner.
- Page 21 *HDMI is a trademark or registered trademark of HDMI Licensing Administrator, Inc. The use of such trademark by Thorlabs does not constitute or imply any affiliation with or endorsement or sponsorship by such trademark owner.
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