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Spatial Light Modulator

What is a Spatial Light Modulator?

A spatial light modulator (SLM) is a device that can spatially modulate a beam of light.

An animation of how a SLM operates

Liquid Crystal Spatial Light Modulator

Liquid crystals (LC) possess fluidlike physical properties between that of solids and liquids and are anatomically structured in a crystalline fashion. Liquid crystals can be divided into three different types: (1) thermotropic (2) lyotropic and (3) polymeric.

The spectral transmission of liquid crystals spans anywhere between the infrared and ultraviolet to microwave regions of the electromagnetic spectrum.

SLMs made out of liquid crystal are structurally pixelated semiconductor elements and can be categorized by their modulation type (phase or amplitude only, or both).

Optically Addressed Spatial Light Modulators

Optically addressed spatial light modulators (OASLM) are typically used for the replication of images in optical processing and also projection displays. Typically, OASLMs have the highest resolution out of all the SLM types.

Electrically Addressed Spatial Light Modulators

Electrically addressed spatial light modulators (EASLM) are used for optical processing applications.

Matrix-Addressed Spatial Light Modulators

EASLMs consist of an array of pixels that can be electronically controlled.

VLSI Backplane Spatial Light Modulators

A VLSI (Very Large Scale Integration) backplane spatial light modulator is manufactured directly on a silicon wafer to form sophisticated circuitry for optical computing whereby each pixel is an active circuit element. This approach typically yields what we know as “smart” pixels or “smart” SLMs that are commonly found within smart televisions.

Best Spatial Light Modulator Companies

CompanyWebsiteEmailPhone
Hamamatsu Photonicshttps://www.hamamatsu.com/info@hamamatsu.fr+33 (0)1 69 53 71 00
Meadowlark Optics Inc.https://www.meadowlark.com/ag-robert@photonlines.com+33 (0)1 30 08 99 00
Holoeye Photonics AG (Laser Components USA, Inc)https://holoeye.com/yjoly@optoprim.com+33 (0) 141 90 61 80
Thorlabs, Inc.https://www.thorlabs.com/Sales.fr@thorlabs.com+33 (0) 970 444 844
Jenoptik AGhttps://www.jenoptik.us/produkte@jenoptik.com+49 3641 65-4243
Santec Corporationhttps://www.santec.com/www.santec.com/en/inquiry+1 (201) 488-5505
Laser 2000 Ltd.https://www.laser2000.co.uk/sales@laser2000.co.uk+44 (0) 1933 461 666
Forth Dimension Displays (Kopin Corporation)https://www.forthdd.com/sales@forthdd.com+44 (0) 1383 827 950
Sintec Optronicshttp://www.sintecoptronics.com/sales@SintecOptronics.com+65 63167112
Einstinchttps://www.einstinc.com/admin@einstinc.com+65 6276 6928
Micro Photon Deviceshttp://www.micro-photon-devices.com/http://www.micro-photon-devices.com/Contact+39 0471 051212
iXBluehttps://www.ixblue.com/https://www.ixblue.com/contact-us+971 50 544 3648
Biophotonics Solutionhttps://www.biophotonicsolutions.com/info@bsifemto.com+1 (508) 506-2941
CAS Microstarhttp://www.casmicrostar.com/laser_zkwx@opt.cn029-65665888
Jasper Display Corphttps://www.jasperdisplay.com/info@jasperdisplay.com+886-3-575-2768