Optical polarizer material

Ebbers, Christopher A

Title: Optical polarizer material

Abstract

Several crystals have been identified which can be grown using standard single crystals growth techniques and which have a high birefringence. The identified crystals include Li.sub.2 CO.sub.3, LiNaCO.sub.3, LiKCO.sub.3, LiRbCO.sub.3 and LiCsCO.sub.3. The condition of high birefringence leads to their application as optical polarizer materials. In one embodiment of the invention, the crystal has the chemical formula LiK.sub.(1-w-x-y) Na.sub.(1-w-x-z) Rb.sub.(1-w-y-z) Cs.sub.(1-x-y-z) CO.sub.3, where w+x+y+z=1. In another embodiment, the crystalline material may be selected from a an alkali metal carbonate and a double salt of alkali metal carbonates, where the polarizer has a Wollaston configuration, a Glan-Thompson configuration or a Glan-Taylor configuration. A method of making an LiNaCO.sub.3 optical polarizer is described. A similar method is shown for making an LiKCO.sub.3 optical polarizer.

Inventors:

Ebbers, Christopher A ^[1]

Livermore, CA

Issue Date:: 1999-01-01

Research Org.:: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

OSTI Identifier:: 872485

Patent Number(s):: 5945037

Assignee:: Regents of University of California (Oakland, CA)

Patent Classifications (CPCs):: C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01D - COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM

G - PHYSICS G02 - OPTICS G02B - OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS

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C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01D - COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
C01D17/003 - {Compounds of alkali metals}

G - PHYSICS G02 - OPTICS G02B - OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
G02B1/02 - made of crystals, e.g. rock-salt, semi-conductors

C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01D - COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
C01D15/08 - Carbonates

C - CHEMISTRY C30 - CRYSTAL GROWTH C30B - SINGLE-CRYSTAL-GROWTH
C30B11/00 - Single-crystal growth by normal freezing or freezing under temperature gradient, e.g. Bridgman-Stockbarger method
C30B15/00 - Single-crystal growth by pulling from a melt, e.g. Czochralski method
C30B29/10 - Inorganic compounds or compositions

G - PHYSICS G02 - OPTICS G02B - OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
G02B27/283 - {used for beam splitting or combining}

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DOE Contract Number:: W-7405-ENG-48

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: optical; polarizer; material; crystals; identified; grown; standard; single; growth; techniques; birefringence; linaco; likco; lirbco; licsco; condition; leads; application; materials; embodiment; crystal; chemical; formula; 1-w-x-y; na; 1-w-x-z; rb; 1-w-y-z; cs; 1-x-y-z; z; crystalline; selected; alkali; metal; carbonate; double; salt; carbonates; wollaston; configuration; glan-thompson; glan-taylor; method; described; similar; shown; metal carbonates; crystalline material; alkali metal; single crystal; single crystals; chemical formula; metal carbonate; metal carbon; similar method; /252/359/423/

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                    Ebbers, Christopher A. Optical polarizer material.  United States: N. p., 1999. 
        Web.

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                    Ebbers, Christopher A. Optical polarizer material.  United States.

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                    Ebbers, Christopher A. Fri .  
        "Optical polarizer material".  United States.  https://www.osti.gov/servlets/purl/872485.

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@article{osti_872485,

  title        = {Optical polarizer material},

  author       = {Ebbers, Christopher A},

  abstractNote = {Several crystals have been identified which can be grown using standard single crystals growth techniques and which have a high birefringence. The identified crystals include Li.sub.2 CO.sub.3, LiNaCO.sub.3, LiKCO.sub.3, LiRbCO.sub.3 and LiCsCO.sub.3. The condition of high birefringence leads to their application as optical polarizer materials. In one embodiment of the invention, the crystal has the chemical formula LiK.sub.(1-w-x-y) Na.sub.(1-w-x-z) Rb.sub.(1-w-y-z) Cs.sub.(1-x-y-z) CO.sub.3, where w+x+y+z=1. In another embodiment, the crystalline material may be selected from a an alkali metal carbonate and a double salt of alkali metal carbonates, where the polarizer has a Wollaston configuration, a Glan-Thompson configuration or a Glan-Taylor configuration. A method of making an LiNaCO.sub.3 optical polarizer is described. A similar method is shown for making an LiKCO.sub.3 optical polarizer.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {1999},

  month        = {1}

}

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Works referenced in this record:

X-ray study of low and high symmetry phases of LiNaCo3
journal, June 1995

Yatsenko, A. V.; Zhukov, S. G.; D'yakov, V. A.
Materials Research Bulletin, Vol. 30, Issue 6
https://doi.org/10.1016/0025-5408(95)00046-1

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Title: Optical polarizer material

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Citation Formats

X-ray study of low and high symmetry phases of LiNaCo3 journal, June 1995

X-ray study of low and high symmetry phases of LiNaCo3
journal, June 1995