N-BK7 Optical Windows with AR Coatings
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Ships from:
China
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On FindLight:
since 2019
Description
Photochina offers a comprehensive range of optical windows designed to isolate different physical environments while allowing light to pass through. When selecting the ideal window, it is crucial to consider factors such as materials, transmission, scattering, wavefront distortion, parallelism, and environmental resistance. Photonchina provides a wide array of materials and precision levels to suit various requirements, including special materials available upon request. Additionally, a broad selection of single-layer or multilayer antireflective coatings on optical windows is available to enhance performance.
N-BK7 Optical Windows are crafted from N-BK7 or its Chinese equivalent, H-K9L, making them an excellent choice for most visible and near-infrared applications. As the most common borosilicate crown optical glass, N-BK7 offers exceptional performance at a great value. Its high homogeneity, low bubble and inclusion content, and ease of manufacturability make it an ideal choice for transmissive optics. These laser-grade optical windows feature excellent parallelism of less than 30 arc-seconds, ensuring minimal transmitted beam deviation. They are available with broadband AR coatings on both sides for optimal use in visible or IR applications.
Photonchina BK7 Windows Capability offers both standard and premium options. The standard option includes BK7 grade A optical glass with a diameter tolerance of +0.0, -0.2mm, and a thickness tolerance of ±0.1mm. The premium option offers tighter tolerances with a diameter tolerance of +0.0, -0.1mm, and a thickness tolerance of ±0.01mm. Both options provide a clear aperture of over 90%, with the premium version boasting superior parallelism and surface quality.
UV Fused Silica Optical Windows feature low distortion, excellent parallelism, low bulk scattering, and fine surface quality, making them ideal for a variety of demanding applications such as multiphoton imaging systems and intracavity laser applications. These windows exhibit extremely low bulk scatter and autofluorescence, with high flatness options available. The UV Fused Silica Windows also feature broadband AR coatings suitable for UV, visible, or IR applications.
Photonchina Fused Silica Windows Capability includes both standard and premium grades of UV grade Fused Silica. The standard version offers a diameter tolerance of +0.0, -0.2mm and a thickness tolerance of ±0.1mm, while the premium version provides more precise tolerances of +0.0, -0.1mm and ±0.01mm, respectively. Both versions maintain a clear aperture of over 90%, with the premium option delivering enhanced parallelism and surface quality.
N-BK7 Optical Windows with AR Coatings
Specifications |
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|---|---|
| Substrate Material: | N-BK7, Fused Silica, UV Grade Fused Silica, IR Grade Fused Silica, Sapphire, CaF2, MgF2 |
| Antireflection Coating: | Coated, Uncoated |
| Diameter: | 1 mm |
| Surface Quality: | 10-5 scratch-dig, 20-10 scratch-dig, 40-20 scratch-dig, 60-40 scratch-dig |
| Surface Flatness: | lambda/10, lambda/20, lambda/8, lambda/6 |
| Thickness: | 0.1 mm |
| Material: | BK7 grade A optical glass |
| Diameter Tolerance (Standard): | +0.0, -0.2mm |
| Diameter Tolerance (Premium): | +0.0, -0.1mm |
| Thickness Tolerance (Standard): | ±0.1mm |
| Thickness Tolerance (Premium): | ±0.01mm |
| Clear Aperture: | >90% |
| Parallelism (Standard): | <1 arc minute |
| Parallelism (Premium): | <10 arc seconds |
| Surface Quality (Standard): | 40-20 scratch and dig |
| Surface Quality (Premium): | 20-10 scratch and dig |
| Wavefront Distortion (Standard): | λ/4 per 25mm @ 632.8nm |
| Wavefront Distortion (Premium): | λ/20 per 25mm @ 632.8nm |
| Protective Bevel (Standard): | 0.1 - 0.5mm |
| Protective Bevel (Premium): | 0.05 - 0.2mm |
| Material: | UV grade Fused Silica |
| Parallelism: | <30 arc-second |
| Surface Flatness (High): | λ/20 |
| Surface Flatness (General Purpose): | λ/10 |
Features
- High Precision Optical Windows: Photonchina offers a wide range of optical windows designed to isolate different physical environments while allowing light to pass through. Choose from a variety of materials and precision levels to suit your specific needs.
- Customizable Material Options: Special materials are available upon request, ensuring that you get the perfect optical window for your application.
- Anti-Reflective Coatings: A broad range of single-layer or multilayer antireflective coatings are available for optical windows, enhancing performance in both visible and infrared applications.
- Superior Optical Glass: N-BK7 or its Chinese equivalent H-K9L is ideal for most visible and near-infrared applications, offering high homogeneity and low bubble content.
- Laser-Grade Quality: These windows feature <30 arc-seconds parallelism for minimal transmitted beam deviation.
- High Surface Flatness: Achieve ≤λ/20 surface flatness and 10-5 scratch-dig for superior optical performance.
- Broadband AR Coatings: Available with coatings for visible and NIR applications.
Applications
- N-BK7, or H-K9L Chinese equivalent, is an excellent optical glass material for most visible and near infrared applications.
- Provides great performance at a good value with high homogeneity and low bubble content.
- Laser-grade, suitable for the most demanding applications.
Frequently Asked Questions
Photonchina's windows are used to isolate different physical environments while allowing light to pass.
The features of Photonchina's Wedge Windows include UV grade Fused Silica material, 30¯15 arc min wedge, >90% clear aperture, <10 arc seconds parallelism, 20-10 scratch and dig surface quality, λ/10 per 25mm @ 632.8nm wavefront distortion, and 45® ¯15® chamfer.
When selecting windows, you should consider materials, transmission, scattering, wavefront distortion, parallelism, and resistance to certain environments.
N-BK7 Optical Windows is an excellent optical glass material for most visible and near infrared applications. It provides great performance at a good value.
Photonchina offers a wide range of different materials and different degrees of precision windows. Special materials are available upon requirement.