ZnSe Window for Infrared Laser / OPZS_WZSA
Windows made of zinc selenium (ZnSe) is the most commonly used optical material that allows transmission of infrared light. Nonhygroscopic and extremely stable under normal conditions, in contrast to other salt-based infrared materials.
Non-coated and AR coated products for CO2 lasers are available.In contrast to other optical materials for infrared light such as Ge (germanium), or Si (silicon), ZnSe windows allow transmission of some visible light, enabling easier adjustment (alignment) of the optical axis of infrared laser systems and enabling use of more convenient and inexpensive He-Ne lasers.
About the handling policy of ZnSe optics
Legally, ZnSe has been considered as a toxic optic substance, the non-coated product (OPZS) must be delivered with a certificate of Acquisition of Poisonous and Harmful Substances.In addition, ZnSe Optics disposal after use is prohibited in general. However, we only take back products that we supplied.
This policy noted is in Japan and other countries may differ in the treatment of ZnSe (Zinc selenide), please contact your local sales office
Common Specifications
| Material | Zinc Selenide Crystal |  |
|---|---|---|
| Coating | OPZS: Uncoated WZSA: Anti-reflection coating (at Wavelength 10.6µm) |
|
| Incident Angle | 0° (WZSA only) | |
| Surface Quality (Scratch-Dig) | 40 - 20 | |
| Clear Aperture | 90% of the diameter |
| Schematic | Outline Drawing |
|---|---|
 |
 |
| Uncoated | ||||
|---|---|---|---|---|
| Part Number |
Diameter φD |
Thickness t |
Parallelism | Transmission (Wavelength 10.6µm) |
| OPZS-30C03-10-3 | φ30mm | 3mm | ＜3′ | 65% |
| OPZS-40C04-10-3 | φ40mm | 4mm | ＜3′ | 65% |
| AR coating | ||||
|---|---|---|---|---|
| Part Number |
Diameter φD |
Thickness t |
Parallelism | Transmission (Wavelength 10.6µm) |
| WZSA-19.05C03-10600A | φ19.05mm | 3mm | ＜3′ | ＞99% |
| WZSA-24.4C03-10600A | φ25.4mm | 3mm | ＜3′ | ＞99% |
| WZSA-3003-10-10600 | φ30mm | 3mm | ＜3′ | ＞99% |
| WZSA-38.103-10600A | φ38.1mm | 3mm | ＜3′ | ＞99% |
| WZSA-40C04-10-10600 | φ40mm | 4mm | ＜3′ | ＞99% |
| WZSA-50.8C05-10600A | φ50.8mm | 5mm | ＜3′ | ＞99% |
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