Er:YAG laser 2940nm​ ZnS Diffractive Beamsplitters (DOE)
Er:YAG Laser 2940nm ZnS Diffractive Beamsplitters are precision diffractive optical elements etched onto a zinc sulfide surface. Coligh is a manufacturer of medical aesthetic 2D diffractive beamsplitters.
Er:YAG laser 2940nm​ ZnS Diffractive Beamsplitters (DOE) Description
Er:YAG Laser 2940nm ZnS Diffractive Beamsplitters are precision diffractive optical elements etched onto a zinc sulfide surface. Coligh is a manufacturer of medical aesthetic 2D diffractive beamsplitters. This product is specifically designed for laser treatments in the medical aesthetic field, particularly for wholesale rejuvenation and skin resurfacing based on ER:YAG lasers.
When 2940nm laser passes through this diffractive beamsplitter, diffraction occurs, splitting the beam into an array of 81 points. By distributing laser energy across 81 focal points, it achieves exceptionally high energy utilization.
The 2940nm wavelength corresponds to a peak absorption peak for water molecules, making 2940nm lasers highly absorbable by water molecules in the skin. Consequently, the 2940nm diffractive beam splitter serves as a core component in high-end medical aesthetic equipment. It enables micro-ablative laser resurfacing, suitable for treating wrinkles, scars, pigmentation, enlarged pores, and other conditions.
Er:YAG laser 2940nm​ ZnS Diffractive Beamsplitters (DOE) Product Details:
Er:YAG laser 2940nm​ ZnS Diffractive Beamsplitters (DOE) Specification
- Design wavelength: 2940nm (specially for Er: YAG)
- Laser dotts arrays: 9*9
- Diffractive efficiency:Â >70%
- Size: Dia15*1.0mm (customizable)
- Material: ZnS and Fused Silica
- Coating: No coating or AR coating for 290nm
- More please contact sales
Coligh Lithography Custom 2D Diffraction Beamsplitter Capability
| Custom Item | Specification |
|---|---|
| Fabrication Process | Lithography + Etching |
| Wavelength Range | 200 nm – 20 µm |
| Incident Angle | Customizable as per application |
| Beam Array Pattern | Up to 33×33 dots |
| Diffraction Efficiency | ≥70%, up to 80%–90% |
| Materials | Fused Silica, Silicon, Germanium |
| Pitch | 10 – 1500 µm |
| Size Range | Min 1.5 mm, Max 4–6 inches |
| Surface Coating | AR Coating, Reflective Coating |
| Device Integration | Currently integrable with medical aesthetic systems |
2940nm​ ZnS Diffractive Optical Element (DOE) Setts With Focusing Lens
We offer complete 2940nm laser spot shaping modules. In addition to providing diffractive beam splitters, we can also supply focusing lenses as part of the package. The entire module set undergoes comprehensive optimization and testing prior to shipment. The entire module utilizes high damage threshold materials and coatings, capable of withstanding high-energy 2940nm laser pulses. We can assemble the DOE and focusing lens for medical aesthetics equipment manufacturers before shipment.
Er:YAG laser 2940nm​ ZnS Diffractive Beamsplitters (DOE) Application
Fractional Laser Resurfacing
In the field of laser medical aesthetics, the 2940nm wavelength enables micro-ablative fractional laser treatment. The DOE (Diffractive Optical Element) divides a single 2940nm laser beam into 81 laser points, creating 81 extremely fine micro-pores in the skin in a single pass. This process ablates aged, imperfect tissue. These micro-pores form micro-treatment zones, stimulating the skin to produce abundant new collagen and elastic fibers to fill these micro-pores. This effectively improves wrinkles, scars, and skin laxity to achieve a rejuvenated complexion.
