Uniaxial

Transmission

Band

Refractive

Refractive

Birefringence

material

(µm)

gap (eV)

index ne

index no

∆n

ZnGeP2

0.74–15

–

3.28

3.23

0.05 (1 µm)

ZnO

0.37–

3.35 (D)

2.015

1.998

0.017

ZnSb2O6

–

–

>1.95

>1.95

–

α-ZnS

–

–

2.378

2.356

0.022

ZrO2

–

4.99–

–

–

–

ZrSiO4

0.4–

–

1.967

1.920

0.042

Biaxial

Transmission (µm)

Refractive

Refractive

Refractive

Birefringence

material

[Band gap (eV)]

index nx

index ny

index nz

∆n

Al2(WO4)3

0.3–5.0

–

–

–

–

Al2SiO4F2

–

1.630

1.631

1.638

0.008

Al2SiO5 (andalusite)

–

1.629

1.633

1.638

0.009

Al2SiO5 (kyanite)

–

1.712

1.720

1.727

0.015

Al2SiO5

–

1.653

1.654

1.669

0.023

Al4B2O9

–

1.605

1.610

1.645

0.040

Al6Ge2O13

–

1.72

–

1.758

0.046

Al6Si2O13

0.21

1.642

1.644

1.654

0.012

AlNb11O29

–

2.20

–

2.22

0.02

AlNbO4

–

1.985

–

2.005

0.02

As2S3

[2.5]

2.4

2.81

3.02

~0.6

AsS

–

2.538

2.684

2.704

0.116

AsSbS3

>2.11

>2.73

>0.62

Ba2CaMgAl2F14

–

1.441

1.442

1.444

0.003

Ba2NaNb5O15

0.38–6.0

2.2177

2.3205

2.3222

0.1045

BaAl2Si2O8

–

1.587

1.593

1.600

0.013

BaBe2Si2O7

–

1.694

1.70

1.706

0.012

BaCa2Mg(SiO4)2

–

1.731

–

1.752

0.021

BaCa2Si3O9

–

1.668

1.684

1.685

0.017

BaCO3

–

1.530

1.679

1.680

0.150

BaMgF4

0.185–10

1.4496

1.4661

1.4738

0.0242

β-BaSi2O5

–

1.598

1.617

1.625

0.027

BaSO4

–

1.6362

1.6373

1.6482

0.012

BaY2F8

0.2–9.5

1.5142

1.5232

1.5353

0.0211

Be2BO3F

–

1.554

1.587

1.628

0.074

BeAl2O4

–

1.746

1.748

1.756

0.010

BiB3O6

0.3–2.5

–

–

–

–

Biaxial

Transmission (µm)

Refractive

Refractive

Refractive

Birefringence

material

[Band gap (eV)]

index nx

index ny

index nz

∆n

Bi2Mo3O12

0.42–5.2 [2.9]

2.254

2.306

2.497

0.243

Bi2O3

[2.8]

?

2.42

?

–

Bi2WO6

–

–

2.2

–

–

BiSbO4

–

2.04

–

2.14

0.10

BiTaO4

–

–

2.35

–

–

BiVO4 (puucherite)

–

2.41

2.50

2.51

0.10

Ca(IO3)2

–

1.792

1.840

1.888

0.096

β-Ca2SiO4

–

1.707

1.715

1.730

0.023

Ca2(VO4)Cl

–

1.835

–

1.865

0.03

Ca2Al2O5

–

1.96

2.01

2.04

0.08

Ca2V2O7

–

1.942

2.00

2.132

0.19

Ca3(VO4)2

–

1.864

1.885

1.890

0.026

Ca3(Zr,Ti)Si2O9

–

1.735

1.737

1.758

0.023

Ca3MgSi2O8

–

1.706

1.712

1.724

0.018

Ca3Si2O7

–

1.641

1.644

1.650

0.009

Ca5Al6O14

–

1.68

1.682

1.685

0.005

Ca5Ga6O14

0.255–6.5

–

–

–

–

CaAl2F8

–

1.501

1.503

1.510

0.009

CaAl2Si2O8

–

1.577

1.585

1.590

0.013

CaAl4O7

0.23–5.1

1.6178

1.6184

1.6516

0.0338

CaAlB3O7

–

1.712

1.717

1.726

0.014

CaAlBO4

–

1.558

1.585

1.614

0.056

CaB2Si2O8

–

1.630

1.633

1.635

0.005

CaB3O5F

–

1.612

1.636

1.653

0.041

CaBa(CO3)2

–

1.5261

1.6710

1.6717

0.146

CaBe(PO4)F

–

1.580

1.600

1.610

0.030

CaBe2(PO4)2

–

1.595

1.601

1.604

0.009

CaCO3-α

–

1.530

1.6810

1.6854

0.1554

CaGe2O5

–

1.84

–

1.88

0.04

CaMgAsO4F

–

1.640

1.660

1.675

0.035

CaMgB2O5

–

1.635

1.681

1.698

0.063

CaMgSi2O6

–

1.664

1.671

1.694

0.030

CaMgSiO4

–

1.641

1.649

1.655

0.014

CaNb2O6

0.3–5.5

2.07

2.10

2.19

0.12

CaSc2O4

0.3–6.5

–

–

–

–

CaSiO3

–

1.615

1.627

1.629

0.014

CaSnSiO5

–

1.765

1.784

1.799

0.034

CaSO4

–

1.570

1.575

1.614

0.044

CaTiSiO5

–

1.84

1.870

1.943

0.103

CaV2O6

–

1.916

1.995

2.13

0.214

CaZnSiO4

–

1.767

1.770

1.774

0.007

CaZrSi2O7

–

1.720

1.736

1.738

0.018

Cd2B6O11

–

1.617

1.630

–

–

Biaxial

Transmission (µm)

Refractive

Refractive

Refractive

Birefringence

material

[Band gap (eV)]

index nx

index ny

index nz

∆n

CsB3O6

0.17–3.0

1.5294

1.5588

1.5864

0.0570

CsNbO(SO4)2

–

1.597

1.604

1.703

0.106

CsTiOAsO4

0.35–5.3

1.8796

1.8961

1.9608

0.0812

β-Ga2O3

0.3–4.5

–

1.962

–

–

Gd2O3

[2.9, 933 K]

–

–

–

–

Gd2(MoO4)3

0.32–5.2

1.8385

1.8390

1.8915

0.053

Gd2SiO5

0.2–5

1.871

1.884

1.910

0.039

GdP5O14

–

1.6094

1.6158

1.6298

0.0204

HfO2

[5.5]

–

–

–

–

HgCl2

–

1.725

1.859

1.965

0.240

HIO3

0.3–1.8

2.37

2.5

2.65

0.280

InPO4

–

1.608

1.618

1.623

0.015

KAl3Si3O10(OH)2

–

1.552

1.582

1.587

0.036

KAlSi3O8

–

1.518

1.520

1.523

0.005

KBF4

–

1.324

1.325

1.325

0.001

KB5O8•4H2O

0.16–1.5

1.422

1.435

1.488

0.066

KLaP4O12

–

1.592

1.600

1.608

0.016

KNbB2O6

0.27–3.1

1.773

1.773

1.801

0.028

KNbO3

0.4–4.5

2.168

2.279

2.329

0.161

KNO3

–

1.332

1.505

1.509

0.172

KPbCl

0.3–20

n≈2

KTiOAsO4

0.35–3.0

1.8079

1.8138

1.9044

0.0965

KTiOPO4

0.35–4.5 [3.5]

1.7614

1.7704

1.8636

0.1022

KVO3

0.4–5.5

–

–

–

–

La(BO2)3

–

1.694

1.769

1.791

0.097

La2Be2O5

0.3–4

1.9641

1.9974

2.0348

0.071

La2Ti2O7

–

2.17

2.24

2.265

0.095

LaBO3

–

1.800

1.877

1.882

0.082

LaP5O14

–

1.5956

1.6015

1.6145

0.0189

LaPO4

–

1.774

1.77

1.828

0.054

Li2BeSiO4

–

1.622

1.633

1.638

0.016

Li2CO3

–

1.430

1.567

1.570

0.140

Li2GeO3

–

?

1.686

?

–

Li3PO4

–

1.550

1.557

1.566

0.016

Li3VO4

0.32 –

–

–

–

–

LiAl(PO4)F

–

1.575

1.587

1.590

0.015

LiAlSi2O6

–

1.648

1.655

1.662

0.014

LiAlSi4O10

–

1.504

1.510

1.516

0.012

LiB3O5

0.16–2.6

1.5742

1.6014

1.6163

0.0421

LiBO2

–

1.540

1.612

1.616

0.076

LiGaO2

0.25–6

1.730

1.758

1.761

0.031

LiVO3

0.5–5.5

1.850

1.970

2.13

0.28

Lu2SiO5

0.2–5

1.797

1.803

1.825

0.028

Biaxial

Transmission ( m)

Refractive

Refractive

Refractive

Birefringence

material

[Band gap (eV)]

index nx

index ny

index nz

∆n

LuP5O14

–

1.5950

1.6072

1.6125

0.0175

Mg2(PO4)F

–

1.569

1.570

1.580

0.011

Mg2B2O5

–

1.596

1.639

1.670

0.074

Mg2GeO4

–

1.698

1.717

1.765

0.067

Mg2SiO4

–

1.635

1.651

1.670

0.035

Mg3(PO4)2

–

1.540

1.544

1.559

0.015

Mg3B2O6

–

1.652

1.653

1.673

0.021

Mg3B7O13Cl

–

1.658

1.662

1.668

0.010

Mg3TiB2O8

–

1.806

1.809

1.830

0.024

Mg4Al8Si2O20

–

1.701

1.703

1.705

0.004

Mg5(BO3)3F

–

1.614

1.623

1.648

0.034

Mg2SiO4

–

1.635

1.651

1.670

0.035

MgAl3BSiO9

–

1.590

1.618

1.623

0.033

MgAlBO4

–

1.667

1.697

1.705

0.038

MgMoO4

–

1.82

1.83

1.84

0.02

MgSiO3

–

1.654

1.655

1.665

0.011

Na2BaTi2Si4O14

–

1.727

1.732

1.789

0.062

Na2BeSi2O6

–

1.544

1.549

1.549

0.005

Na2Ca(PO4)F

–

1.508

1.515

1.520

0.012

Na2CaMg(PO4)2

–

1.598

1.605

1.608

0.010

Na2MgAlF7

–

1.346

1.348

1.350

0.004

Na2MgSiO4

–

1.534

1.536

1.543

0.009

Na2Si2O5

–

1.507

1.517

1.521

0.014

Na2Ti2Si2O9

–

1.91

2.01

2.03

0.12

Na3AlF6

–

1.338

1.338

1.339

0.001

NaAl(AsO4)F

–

1.634

1.672

1.685

0.051

NaAl(PO4)F

–

1.545

1.554

1.565

0.020

NaAlSi3O8

–

1.527

1.531

1.538

0.011

NaBe2BO3F2

~0.15–

1.370

1.474

1.474

0.104

NaBePO4

–

1.552

1.558

1.561

0.009

NaBF4

–

1.301

1.3012

1.3068

0.0058

NaCaPO4

–

1.607

1.610

1.616

0.009

NaMgF3

–

–

1.364

–

–

NaNbO3

–

2.10

2.19

2.21

0.11

NaScSi2O6

–

1.683

1.715

1.724

0.041

NaSr3Al3F16

–

1.429

1.433

1.436

0.007

NaVO3

0.4–5.5

–

–

–

–

NaZnF3

–

–

1.440

–

–

NH4B5O8•4H2O

–

1.42

1.43

1.48

0.06

Pb2KNb5O15

––

2.39

2.445

2.46

0.07

Pb2V2O7

–

2.2–2.6

0.279

PbBr2

0.36–30 [3.3]

–

–

–

–

PbCl2

0.35–20

2.1992

2.2172

2.2596

0.0604