Introduce what is ZnSe, Optical Properties ,Thermal Properties and Mechanical Properties of Zinc selenide material
ZnSe is a light yellow binary solid compound that is rarely occurs in nature. It can be made in hexagonal and cubic crystal structures. Zinc selenide is used as a blue light source in light-emitting diodes and diode lasers. It is also used as infrared laser gain medium and as an infrared optical material. ZnSe activated with tellurium is used in x-ray and gamma ray detectrs as a scintillator.
Zinc Selenide (ZnSe) Optical Components are Optical Components designed for the Infrared (IR) spectrum. Zinc Selenide (ZnSe) is used in a range of Optical Components, including Optical Windows or Optical Lenses, for applications including thermal imaging or FLIR. Zinc Selenide (ZnSe) Optical Components are ideal for integration into CO2 laser systems because of its low absorption coefficient combined with its high resistance to thermal shock.
* How does Zinc Selenide be manufactured?
Zinc Selenide is produced by synthesis from Zinc vapour and H2Se gas, forming as sheets on Graphite susceptors. Zinc Selenide is microcrystalline in structure, the grain size being controlled to produce maximum strength. Single crystal ZnSe is available, but is not common but has been reported as having lower absorption and thus more effective for CO2 optics.
* What is Optical Properties of ZnSe?
|
Optical Properties |
|
|
Bulk Absorption Coefficient @ 10.6 µm |
≤ 0.0005 cm-1 |
|
Temperature Change of Refractive Index @ 10.6 µm |
61 x 10-6/°C |
|
Refractive Index Inhomogeneity @ 632.8 nm |
< 3 x 10-6 |
|
Wavelength |
Index |
Wavelength |
Index |
Wavelength |
Index |
Wavelength |
Index |
|
0.54 |
2.6754 |
1.8 |
2.4496 |
7.4 |
2.4201 |
13.0 |
2.3850 |
|
0.58 |
2.6312 |
2.2 |
2.4437 |
7.8 |
2.4183 |
13.4 |
2.3816 |
|
0.62 |
2.5994 |
2.6 |
2.4401 |
8.2 |
2.4163 |
13.8 |
2.3781 |
|
0.66 |
2.5755 |
3.0 |
2.4376 |
8.6 |
2.4143 |
14.2 |
2.3744 |
|
0.70 |
2.5568 |
3.4 |
2.4356 |
9.0 |
2.4122 |
14.6 |
2.3705 |
|
0.74 |
2.5418 |
3.8 |
2.4339 |
9.4 |
2.4100 |
15.0 |
2.3665 |
|
0.78 |
2.5295 |
4.2 |
2.4324 |
9.8 |
2.4077 |
15.4 |
2.3623 |
|
0.82 |
2.5193 |
4.6 |
2.4309 |
10.2 |
2.4053 |
15.8 |
2.3579 |
|
0.86 |
2.5107 |
5.0 |
2.4295 |
10.6 |
2.4028 |
16.2 |
2.3534 |
|
0.90 |
2.5034 |
5.4 |
2.4281 |
11.0 |
2.4001 |
16.6 |
2.3487 |
|
0.94 |
2.4971 |
5.8 |
2.4266 |
11.4 |
2.3974 |
17.0 |
2.3448 |
|
0.98 |
2.4916 |
6.2 |
2.4251 |
11.8 |
2.3945 |
17.4 |
2.3387 |
|
1.0 |
2.4892 |
6.6 |
2.4235 |
12.2 |
2.3915 |
17.8 |
2.3333 |
|
1.4 |
2.4609 |
7.0 |
2.4218 |
12.6 |
2.3883 |
18.2 |
2.3278 |
|
Wavelength |
||||
|
Temp °C |
0.632µm |
1.5µm |
3.39µm |
10.6µm |
|
-180 |
7.6 |
5.4 |
5.0 |
4.9 |
|
-160 |
8.2 |
5.7 |
5.2 |
5.1 |
|
-140 |
8.7 |
6.0 |
5.4 |
5.4 |
|
-120 |
9.1 |
6.3 |
5.6 |
5.5 |
|
-100 |
9.4 |
6.5 |
5.8 |
5.7 |
|
-80 |
9.7 |
6.6 |
5.9 |
5.8 |
|
-60 |
10.0 |
6.7 |
6.0 |
5.9 |
|
-40 |
10.2 |
6.8 |
6.1 |
6.0 |
|
-20 |
10.3 |
6.9 |
6.1 |
6.0 |
|
0 |
10.5 |
7.0 |
6.2 |
6.1 |
|
20 |
10.6 |
7.0 |
6.2 |
6.1 |
|
40 |
10.7 |
7.0 |
6.2 |
6.1 |
|
60 |
10.8 |
7.1 |
6.3 |
6.1 |
|
80 |
10.9 |
7.1 |
6.3 |
6.2 |
|
100 |
11.0 |
7.2 |
6.3 |
6.2 |
|
120 |
11.1 |
7.2 |
6.4 |
6.3 |
|
140 |
11.3 |
7.3 |
6.4 |
6.3 |
|
160 |
11.5 |
7.4 |
6.5 |
6.4 |
|
180 |
11.8 |
7.6 |
6.6 |
6.6 |
|
200 |
12.1 |
7.8 |
6.7 |
6.7 |
|
oa |
0.1 |
0.1 |
0.1 |
0.1 |
* What is Thermal Properties of ZnSe Lens?
|
Thermal Properties |
|
|
Thermal Conductivity @ 20° C |
0.18 W/cm/°C |
|
Specific Heat |
0.356 J/g/°C |
|
Linear Expansion Coefficient @ 20° C |
7.57 x 10-6 /°C |
Mechanical Properties of ZnSe
|
Mechanical Properties |
|
|
Young’s Modulus |
67.2 GPa (9.75 x 106 psi) |
|
Rupture Modulus |
55.1 MPa (8,000 psi) |
|
Knoop Hardness |
105-120 kg/mm2 |
|
Density |
5.27 g/cm3 |
|
Poisson’s Ratio |
0.28 |
* How to clear ZnSe lens, Znse crystal, Znse windows?
You should prepare working area accordingly. This is very important because particulate contamination from the work surface or the worker is what usually scratches the coating. Clear the table of everything and wear clean clothing. Work as still as possible so as not to shake particles out of your hair while cleaning. Work in a darkened room under a freshly cleaned high intensity desk lamp so that the reflection of a bright source of light on a dark background will allow you to see what you are doing. Be sure that the work surface will not be eaten by methanol. Read all precautions regarding the safe use of methanol and follow all storage and handling instructions. Any area containing optics should prohibit smoking. Smoke vapor deposits are difficult to remove from optical surfaces. Unless otherwise noted, all methods of cleaning (vacuum, dry nitrogen, brush, cotton, and/or lens tissue) are performed from the center of the surface to its edges. The applicator (cotton, lens tissue) should be rotated as the cleaning advances, always presenting a clean surface to the object being cleaned.
Dust is the most common contaminant and can usually be removed using pressurized gas. If more cleaning is necessary, hold the lens in lens tissue and apply a few drops of reagent-grade acetone or lens cleaning solution. Slowly turn the lens while applying pressure in the center and working outward, to pull dirt off the lens instead of redistributing it on the surface. Fingerprints on a coated lens should be cleaned as soon as possible to avoid staining or damaging the optic. Larger dirt particles, however, should be removed with a dust-free blower before attempting to clean the optic with lens tissue. Larger particles trapped under the cloth will scratch the surface you are attempting to clean. If the lens is still dirty after using acetone - for instance, if the oil was just redistributed and not cleaned off the optic - then a mild soap solution can be used to gently wash the lens. Repeat the procedure with acetone and finish it with isopropyl alcohol to eliminate streaks and soap residue.
* What can VY manufacture from ZnSe IR material?
VY Optoelectronics Co.,Ltd. offers a variety of Zinc Selenide (ZnSe) Optical Components, such as Optical Lenses, Optical Windows, Prisms, Plate Beamsplitters, or Focusing Objectives. VY Optics’ Zinc Selenide (ZnSe) Optical Lenses are ideal for life science applications. VY Optics' Zinc Selenide (ZnSe) Prisms are designed for high transmission from 1 - 16μm. Zinc Selenide (ZnSe) Plate Beamsplitters offer a 50% reflection/50% transmission ratio, in addition to excellent performance in the 7 - 14μm ratio. Zinc Selenide (ZnSe) Focusing Objectives provide maximum coupling efficiency between an Infrared (IR) light source and a single-mode or multi-mode fiber optic.
