BRAGG LIQUID CRYSTAL POLARIZATION GRATINGS
A diffractive optical element comprises a plurality of liquid crystal sublayers, made of liquid crystal polarization crystals, and forming a plurality of stacked birefringent sublayers having an overall thickness (d), an average refractive index (n), and comprising liquid crystal molecule orientatio...
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| creator | KOMANDURI, Ravi K KEKAS, Jason D ESCUTI, Michael J |
| description | A diffractive optical element comprises a plurality of liquid crystal sublayers, made of liquid crystal polarization crystals, and forming a plurality of stacked birefringent sublayers having an overall thickness (d), an average refractive index (n), and comprising liquid crystal molecule orientations that vary in a direction along respective interfaces between adjacent ones of the liquid crystal sublayers to define a grating period (Λ) of the diffractive optical element such that a variable Q is greater than 1 for an operational wavelength λ of light, where Q = 2 π λ d / Λ2 n. The liquid crystal sublayers comprise a plurality of stacked polymerized nematic liquid crystal sublayers, wherein respective thicknesses of the stacked polymerized nematic liquid crystal sublayers are less than the operational wavelength λ of the light and wherein each of the stacked polymerized nematic liquid crystal sublayers is coated and polymerized individually. |
| format | Patent |
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The liquid crystal sublayers comprise a plurality of stacked polymerized nematic liquid crystal sublayers, wherein respective thicknesses of the stacked polymerized nematic liquid crystal sublayers are less than the operational wavelength λ of the light and wherein each of the stacked polymerized nematic liquid crystal sublayers is coated and polymerized individually.</description><language>eng ; fre ; ger</language><subject>DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING ; FREQUENCY-CHANGING ; NON-LINEAR OPTICS ; OPTICAL ANALOGUE/DIGITAL CONVERTERS ; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS ; OPTICAL LOGIC ELEMENTS ; OPTICS ; PHYSICS ; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF</subject><creationdate>2023</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20230726&DB=EPODOC&CC=EP&NR=4215960A1$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20230726&DB=EPODOC&CC=EP&NR=4215960A1$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>KOMANDURI, Ravi K</creatorcontrib><creatorcontrib>KEKAS, Jason D</creatorcontrib><creatorcontrib>ESCUTI, Michael J</creatorcontrib><title>BRAGG LIQUID CRYSTAL POLARIZATION GRATINGS</title><description>A diffractive optical element comprises a plurality of liquid crystal sublayers, made of liquid crystal polarization crystals, and forming a plurality of stacked birefringent sublayers having an overall thickness (d), an average refractive index (n), and comprising liquid crystal molecule orientations that vary in a direction along respective interfaces between adjacent ones of the liquid crystal sublayers to define a grating period (Λ) of the diffractive optical element such that a variable Q is greater than 1 for an operational wavelength λ of light, where Q = 2 π λ d / Λ2 n. 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The liquid crystal sublayers comprise a plurality of stacked polymerized nematic liquid crystal sublayers, wherein respective thicknesses of the stacked polymerized nematic liquid crystal sublayers are less than the operational wavelength λ of the light and wherein each of the stacked polymerized nematic liquid crystal sublayers is coated and polymerized individually.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING FREQUENCY-CHANGING NON-LINEAR OPTICS OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICAL LOGIC ELEMENTS OPTICS PHYSICS TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF |
| title | BRAGG LIQUID CRYSTAL POLARIZATION GRATINGS |
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