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High-power birefringent materials are specialized crystals designed to withstand intense laser radiation while exhibiting significant double refraction (birefringence,

delta n

) for applications such as laser polarization, beam displacement, and harmonic generation. They are characterized by high laser damage thresholds (LDT), excellent thermal stability, and wide transparency ranges.

Key high-power birefringent materials include:

Alpha-Barium Borate (
$alpha$
-BBO): A top choice for high-power laser applications (especially UV), offering high birefringence, a broad transmission range (190 nm to 3500 nm), and good temperature stability.
Yttrium Vanadate (
$YVO sub 4$
): A highly transparent crystal widely used in polarizer components due to its large birefringence, though less optimal than
$alpha$
-BBO for extreme power levels.
Lithium Triborate (LBO): Frequently used for high-power, high-repetition-rate green and UV generation due to its very high damage threshold.
Mercuric Bromide (
$HgBr sub 2$
): A recently researched material with a giant birefringence of 0.235 at
(significantly higher than standard materials) with a wide transmission window spanning UV to far-IR (
).
: A material with a large birefringence of 0.333 and a wide energy gap, outperforming traditional crystals like
$YVO sub 4$
and
$TiO sub 2$
in UV-visible applications.
Sn2PO4I & Sn2BO3I: New high-performance crystals designed for high birefringence (
) in ultraviolet applications.

Giant Birefringence: Materials showing birefringence exceeding 0.3 are increasingly pursued, with emerging compounds like
achieving values as high as 0.87.
Applications: These materials are essential for beam displacers, Pockels cells, Glan-Taylor prisms, and high-power laser isolators.
Material Selection: The choice depends on the wavelength: borates (e.g.,
$alpha$
-BBO, LBO) are preferred for UV/visible, while chalcogenides are emerging for IR.

An excellent deep-ultraviolet birefringent material based on ...
Aug 12, 2022 — Borate is one of the best material systems to explore DUV birefringent crystals29,30,31,32,33. Specifically, the strong covalent B...
www.nature.com
Birefringent Crystals - HG Optronics.,INC.
α-BBO (α-BaB2O4) is a negative uniaxial crystal which has large birefringence over a broad transparent range of 190nm to 3500nm. α...
www.hgoptronics.com
A new birefringent material, HfF 2 (IO 3 ) 2 , with a large ...
Jan 15, 2023 — Abstract. Birefringent materials have been widely used in optical devices. An excellent birefringent material, HfF2(IO3)2, was rat...
www.sciencedirect.com

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Web results

Scientists develop high-performance Hg-based crystal for ...

Phys.org

https://phys.org › Physics › Condensed Matter

Phys.org

https://phys.org › Physics › Condensed Matter

Jan 29, 2026 — Mid- and far-infrared birefringent crystals are key functional materials for polarization control, laser technologies, and infrared ...

A new birefringent material, HfF 2 (IO 3 ) 2 , with a large ...

ScienceDirect.com

https://www.sciencedirect.com › article › abs › pii

ScienceDirect.com

https://www.sciencedirect.com › article › abs › pii

by Y Huang2023Cited by 20 — An excellent birefringent material, HfF2(IO3)2, was rational designed and synthesized by integrating iodate and fluoride functional groups.Read more

Web results

Giant birefringence

Wikipedia

https://en.wikipedia.org › wiki › Giant_birefringence

Wikipedia

https://en.wikipedia.org › wiki › Giant_birefringence

Some oxides, for example borate or iodate can have high birefringence. Also compounds containing C=O bonds have higher levels. These include oxalates, squarates ...Read more

Birefringent Materials – Buying Guide & Suppliers

RP Photonics

https://www.rp-photonics.com › ... › Product categories

RP Photonics

https://www.rp-photonics.com › ... › Product categories

High-birefringence materials: Crystals like calcite (CaCO3) and yttrium vanadate (YVO4) exhibit a large difference between refractive indices. They are ideal ...Read more

Design Principles and Identification of Birefringent Materials

ACS Publications

https://pubs.acs.org › doi

ACS Publications

https://pubs.acs.org › doi

Jul 18, 2025 — Materials with large birefringence are critical in modern optics and are used in devices for optical communication, (1) laser-based technologies ...Read more

HgBr2: an easily growing wide-spectrum birefringent crystal

National Institutes of Health (.gov)

https://pmc.ncbi.nlm.nih.gov › articles › PMC11077557

National Institutes of Health (.gov)

https://pmc.ncbi.nlm.nih.gov › articles › PMC11077557

by MS Zhang2024Cited by 30 — In this work, mercuric bromide (HgBr 2 ) has been investigated for the first time as a promising birefringent material with a wide transparent window.Read more

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Researchers discover an excellent birefringent material ...

Xinjiang Technical Institute of Physics & Chemistry

http://english.xjipc.cas.cn › News › Events

Xinjiang Technical Institute of Physics & Chemistry

http://english.xjipc.cas.cn › News › Events

Sep 24, 2021 — Although α-BaB2O4 crystal has excellent comprehensive performance, the birefringence is smaller than those of YVO4 and rutile, which hinders the ...Read more

Optical Low-pass Filter Birefringent Material "Quartz Crystal"

NDK - NIHON DEMPA KOGYO CO., LTD.

https://www.ndk.com › optics › products › lpf-crystal

NDK - NIHON DEMPA KOGYO CO., LTD.

https://www.ndk.com › optics › products › lpf-crystal

Our birefringent materials are made with synthetic quartz crystals grown in-house, so they offer exceptionally high quality. We offer custom designs that ...Read more

An excellent deep-ultraviolet birefringent material based on ...

Nature

https://www.nature.com › ... › articles

Nature

https://www.nature.com › ... › articles

by F Zhang2022Cited by 178 — Birefringent materials play indispensable roles in modulating the polarization of light and are vital in the laser science and technology.