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Germanium (Ge), 3-5μmGermanium (Ge), 8-12 μmSilicon (Si), 3-5μm

IR Thermal Imaging Coatings

High-Efficiency Broadband Anti-Reflective (BBAR) Coating onGermanium (Ge), 3 - 5μm

High-Efficiency Broadband Coating for the 3 - 5μm range gives low reflection and hightransmission for use in passive imagingsystems. This coating is not intended for high power laser applications.

Application

Transmission when measured through a 3mmthick Ge substrate coated on both surfaceswith the broadband AR coating.

T >= 98.0% average from 3 - 5μm

Reflection from a single surface when coatedwith the broadband AR coating.

R <= 0.5% average from 3 - 5μm

This coating can be modified for similar performance at other wavelengths.

Spectral Performance

High-Efficiency Broadband Anti-Reflective Coating on Ge for 3-5μm Transmission vs. Wavelength

80

82

84

86

88

90

92

94

96

98

100

2.5 3 3.5 4 4.5 5 5.5

Wavelength (μm)

%Tr

ansm

issi

on

High-Efficiency Broadband Anti-Reflective Coating on Ge for 3-5μm Reflection vs. Wavelength

0

0.5

1

1.5

2

2.5

3

3.5

4

4.5

5

2.5 3.0 3.5 4.0 4.5 5.0 5.5

Wavelength (μm)

%R

efle

ctio

n pe

r Sur

face

This coating is designed to meet durabilityrequirements of the following MIL Specifications:

Adhesion MIL-C-48497 MIL-C-675C

Humidity MIL-C-48497 MIL-C-675C

Moderate MIL-C-48497Abrasion MIL-C-675C

Environmental Performance

rev. May 2003 BAR0703050

2/22/10

High-Efficiency Broadband Anti-Reflective (BBAR) Coating onGermanium (Ge), 8 - 12 μm

This low reflection/high transmission coating isdesigned to cover the 8-12μm region andsatisfies the environmental requirements listedbelow.

This low reflectance coating is intended to beused in FLIR or passive radiation systems.

Application

Transmission when measured through a 1mmthick Ge substrate coated on both surfaceswith the broadband AR coating.

T >= 98% average from 8 - 12μm

Reflection from a single surface when coatedwith the broadband AR coating.

R <= 0.5% average per surface from 8 - 12μm

This coating can be modified for similar performance at other wavelengths.

Spectral Performance

High-Efficiency Broadband Anti-Reflective Coating on Ge for 8-12μm RegionTransmission vs. Wavelength

90.0

91.0

92.0

93.0

94.0

95.0

96.0

97.0

98.0

99.0

100.0

6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11 11.5 12 12.5 13 13.5 14

Wavelength (μm)

%Tr

ansm

issi

on

High-Efficiency Broadband Anti-Reflective Coating on Ge for 8-12μm RegionReflection vs. Wavelength

0.0

0.6

1.1

1.7

2.2

2.8

3.3

3.9

4.4

5.0

6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11 11.5 12 12.5 13 13.5 14

Wavelength (μm)

%R

efle

ctio

n pe

r Sur

face

This coating is designed to meet durabilityrequirements of the following MIL specifications:

Adhesion MIL-C-48497 MIL-C-675C

Humidity MIL-C-48497 MIL-C-675C

Moderate MIL-C-48497Abrasion MIL-C-675C

II-VI will supply certification upon request.

Environmental Performance

rev. May 2003 BBAR070105

2/23/10

High-Efficiency Broadband Anti-Reflective (BBAR) Coating onSilicon (Si), 3 - 5μm

High-Efficiency Broadband Coating for the 3 - 5μm range gives low reflection and hightransmission for use in passive imagingsystems. This coating is not intended for high power laser applications.

Application

Transmission when measured through a 3mmthick Si substrate coated on both surfaces withthe broadband AR coating.

T >= 98.0% average from 3 - 5μm

Reflection from a single surface when coatedwith the broadband AR coating.

R <= 0.5% average from 3 - 5μm

This coating can be modified for similar performance at other wavelengths.

Spectral Performance

High-Efficiency Broadband Anti-Reflective Coating on Si for 3-5μm Transmission vs. Wavelength

80

82

84

86

88

90

92

94

96

98

100

2.5 3 3.5 4 4.5 5 5.5

Wavelength (μm)

%Tr

ansm

issi

on

High-Efficiency Broadband Anti-Reflective Coating on Si for 3-5μm Reflection vs. Wavelength

0

0.5

1

1.5

2

2.5

3

3.5

4

4.5

5

2.5 3.0 3.5 4.0 4.5 5.0 5.5

Wavelength (μm)

%R

efle

ctio

n pe

r Sur

face

This coating is designed to meet durabilityrequirements of the following MIL Specifications:

Adhesion MIL-C-48497 MIL-C-675C

Humidity MIL-C-48497 MIL-C-675C

Moderate MIL-C-48497Abrasion MIL-C-675C

Environmental Performance

rev. May 2003 BAR0803050

2/24/10

High-Efficiency Broadband Anti-Reflective (BBAR) Coating onZinc Sulfide MultiSpectral (ZnS MS), 3 - 5μm

High-Efficiency Broadband Coating for the 3 - 5μm range gives low reflection and hightransmission for use in passive imagingsystems. This coating is not intended for high power laser applications.

Application

Transmission when measured through a 3mmthick ZnS MS substrate coated on both surfaces with the broadband AR coating.

T >= 98.0% average from 3 - 5μm

Reflection from a single surface when coatedwith the broadband AR coating.

R <= 0.5% average from 3 - 5μm

This coating can be modified for similar performance at other wavelengths.

Spectral Performance

High-Efficiency Broadband Anti-Reflective Coating on ZnS MS for 3-5μmTransmission vs. Wavelength

80

82

84

86

88

90

92

94

96

98

100

2.50 3.00 3.50 4.00 4.50 5.00 5.50

Wavelength (μm)

%Tr

ansm

issi

on

High-Efficiency Broadband Anti-Reflective Coating on ZnS MS for 3-5μm Reflection vs. Wavelength

0.0

1.0

2.0

3.0

4.0

5.0

6.0

7.0

8.0

2.5 3.0 3.5 4.0 4.5 5.0 5.5

Wavelength (μm)

%Re

flect

ion

per S

urfa

ce

This coating is designed to meet durabilityrequirements of the following MIL Specifications:

Adhesion MIL-C-48497 MIL-C-675C

Humidity MIL-C-48497 MIL-C-675C

Moderate MIL-C-48497Abrasion MIL-C-675C

Environmental Performance

rev. May 2003 BAR0403050

2/25/10

High-Efficiency Broadband Anti-Reflective (BBAR) Coating onZinc Sulfide MultiSpectral (ZnS MS) and Zinc Sulfide Regular (ZnS), 8 - 12μm

This low reflection/high transmission coating isdesigned to cover the 8 - 12μm region andsatisfy the environmental requirements listedbelow. While low in absorption it is intented to be used in FLIR or passive radiation systems.

This coating can be applied to ZnS Regularand ZnS MultiSpectral Grades.

Application

Transmission when measured through a 3mmthick ZnSe substrate coated on both surfaceswith the broadband AR coating.

T >= 92.5% average from 8 - 12μm

Reflection from a single surface when coatedwith the broadband AR coating.

R <= 0.5% average per surface 8 - 12μm R <= 1.0% absolute per surface 8 - 12μm

This coating can be modified for similar performance at other wavelengths.

Spectral Performance

High-Efficiency Broadband Anti-Reflection Coating on ZnS (MS) for the 8-12μm Region

Transmission vs. Wavelength

60

65

70

75

80

85

90

95

100

6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11 11.5 12 12.5 13 13.5 14

Wavelength (μm)

%Tr

ansm

issi

on

High-Efficiency Broadband Anti-Reflection Coating on ZnS (MS) for the 8-12μm Region

Reflection vs. Wavelength

0

1

2

3

4

5

6

7

8

9

10

6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11 11.5 12 12.5 13 13.5 14

Wavelength (μm)

%R

efle

ctio

n pe

r Sur

face

This coating is designed to meet durabilityrequirements of the following MIL Specifications:

Adhesion MIL-C-48497 MIL-C-675C

Humidity MIL-C-48497 MIL-C-675C

Moderate MIL-C-48497Abrasion MIL-C-675C

Environmental Performance

rev. April 2003 BAR040812

2/26/10

High-Efficiency Broadband Anti-Reflective (BBAR) Coating onZinc Selenide (ZnSe), 3 - 5μm

High-Efficiency Broadband Coating for the 3 - 5μm range gives low reflection and hightransmission for use in passive imagingsystems. This coating is not intended for high power laser applications.

Application

Transmission when measured through a 3mmthick ZnSe substrate coated on both surfaceswith the broadband AR coating.

T >= 98.0% average from 3 - 5μm

Reflection from a single surface when coatedwith the broadband AR coating.

R <= 0.5% average from 3 - 5μm

This coating can be modified for similar performance at other wavelengths.

Spectral Performance

High-Efficiency Broadband Anti-Reflective Coating on ZnSe for 3-5μm Transmission vs. Wavelength

90

91

92

93

94

95

96

97

98

99

100

2 2.5 3 3.5 4 4.5 5 5.5 6

Wavelength (μm)

%Tr

ansm

issi

on

High-Efficiency Broadband Anti-Reflective Coating on ZnSe for 3-5μmReflectance vs. Wavelength

0

0.5

1

1.5

2

2.5

3

3.5

4

4.5

5

2 2.5 3 3.5 4 4.5 5 5.5 6

Wavelength (μm)

%Re

flect

ion

per S

urfa

ce

This coating is designed to meet durabilityrequirements of the following MIL Specifications:

Adhesion MIL-C-48497 MIL-C-675C

Humidity MIL-C-48497 MIL-C-675C

Moderate MIL-C-48497Abrasion MIL-C-675C

Environmental Performance

rev. May 2003 BAR0503050

2/27/10

High-Efficiency Broadband Anti-Reflective (BBAR) Coating onZinc Selenide (ZnSe), 8 - 12 μm

This low reflection/high transmission coating isdesigned to cover the 8 - 12μm region andsatisfies the environmental requirements listedbelow.

This low reflectance coating is intended to beused in FLIR or passive radiation systems.

Application

Transmission when measured through a 3mmthick ZnSe substrate coated on both surfaceswith the broadband AR coating.

T >= 98% average from 8 - 12μm

Reflection from a single surface when coatedwith the broadband AR coating.

R <= 0.5% average per surface from 8 - 12μm

This coating can be modified for similar performance at other wavelengths.

Spectral Performance

High-Efficiency Broadband Anti-Reflection Coating on ZnSe for the 8-12μm Region

Transmission vs. Wavelength

90

91

92

93

94

95

96

97

98

99

100

6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11 11.5 12 12.5 13 13.5 14

Wavelength (μm)

%Tr

ansm

issi

on

High-Efficiency Broadband Anti-Reflection Coating on ZnSe for the 8-12μm Region

Reflection vs. Wavelength

0

0.5

1

1.5

2

2.5

3

3.5

4

4.5

5

6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11 11.5 12 12.5 13 13.5 14

Wavelength (μm)

%R

efle

ctio

n pe

r Sur

fac e

This coating is designed to meet durabilityrequirements of the following MIL specifications:

Adhesion MIL-C-48497 MIL-C-675C

Humidity MIL-C-48497 MIL-C-675C

Moderate MIL-C-48497Abrasion MIL-C-675C

II-VI will supply certification upon request.

Environmental Performance

rev. April 2003 BAR050812

2/28/10

High-Efficiency Dual Broadband (DBBAR) Coating on Germanium (Ge) for 3 - 5μm and 8 - 12μm

This coating is designed to give low reflectance and high transmittance when usedin passive imaging systems. This coating isnot intended for high power laser applications.

Application

Transmission when measured on a 3mm thickGe substrate coated on both surfaces with thedual broadband AR coating.

T >= 90% average from 3 - 5μmT >= 95% average from 8 - 12μm

Reflection from a single surface when coatedwith the dual broadband AR coating.

R <= 5.0% average from 3 - 5μmR <= 2.5% average from 8 - 12μm

This coating can be modified for similar performance at other wavelengths.

Spectral Performance

High-Efficiency Dual Broadband Coating on Ge for 3-5μm and 8-12μm

Transmission vs. Wavelength

60

65

70

75

80

85

90

95

100

2.5 3.5 4.5 5.5 6.5 7.5 8.5 9.5 10.5 11.5 12.5

Wavelength (μm)

%Tr

ansm

issi

on

High-Efficiency Dual Broadband Coating on Ge for 3-5μm and 8-12μm

Reflection vs. Wavelength

0

2

4

6

8

10

12

14

16

18

20

2.5 3.5 4.5 5.5 6.5 7.5 8.5 9.5 10.5 11.5 12.5

Wavelength (μm)

%R

efle

ctio

n pe

r Sur

face

This coating is designed to meet durabilityrequirements of the following MIL Specifications:

Adhesion MIL-C-48497 MIL-C-675C

Humidity MIL-C-48497 MIL-C-675C

Moderate MIL-C-48497Abrasion MIL-C-675C

II-VI will supply certification on request.

Environmental Performance

rev. April 2003 DBAR07035812

2/29/10

High-Efficiency Dual Broadband (DBBAR) Coating on Zinc Selenide (ZnSe) for 3 - 5μm and 8 - 12μm

This coating is designed to give low reflectance and high transmittance when usedin passive imaging systems. This coating isnot intended for high power laser applications.

Application

Transmission when measured on a 3mm thickZnSe substrate coated on both surfaces with the dual broadband AR coating.

T > 90% average from 3 - 5μmT > 95% average from 8 - 12μm

Reflection from a single surface when coatedwith the dual broadband AR coating.

R < 5.0% average from 3 - 5μmR < 2.5% average from 8 - 12μm

This coating can be modified for similar performance at other wavelengths.

Spectral Performance

High-Efficiency Dual Broadband Coating on ZnSe for 3-5μm and 8-12μm

Transmission vs. Wavelength

60

65

70

75

80

85

90

95

100

2.5 3.5 4.5 5.5 6.5 7.5 8.5 9.5 10.5 11.5 12.5

Wavelength (μm)

%Tr

ansm

issi

n

High-Efficiency Dual Broadband Coating on ZnSe for 3-5μm and 8-12μm

Reflection vs. Wavelength

0

1

2

3

4

5

6

7

8

9

10

2.5 3.5 4.5 5.5 6.5 7.5 8.5 9.5 10.5 11.5 12.5

Wavelength (μm)

%R

efle

ctio

n pe

r Sur

face

This coating is designed to meet durabilityrequirements of the following MIL Specifications:

Adhesion MIL-C-48497 MIL-C-675C

Humidity MIL-C-48497 MIL-C-675C

Moderate MIL-C-48497Abrasion MIL-C-675C

II-VI will supply certification on request

Environmental Performance

rev. April 2003 DBAR050312

2/210/10