NEW YAG Ultra High Vacuum Viewports

Expanding Optical Capabilities in Extreme Environments

MPF Products is proud to introduce the latest innovation in our hermetically sealed viewport lineup: YAG Ultra High Vacuum Viewports. Building on over 30 years of excellence in vacuum component manufacturing, this new offering reflects our continued commitment to problem-solving and performance in high-demand environments.

Partner with us and transform your operations and capabilities

Why Choose YAG (Yttrium Aluminum Garnet)?

YAG is a synthetic crystal with outstanding optical and mechanical properties that make it ideal for ultra high vacuum (UHV) applications across a range of cutting-edge industries:

Exceptional Transmission Range: Clear, undoped YAG offers broad-spectrum transparency from UV to IR (250nm to 4200nm).
Durable and Non-Birefringent: More durable than fused silica and optically superior to sapphire due to its non-birefringent nature.
High Performance Characteristics:
- Transmission >80% across spectrum
- Purity >99%
- Index of Refraction: 1.82
- Low internal stress, homogeneous, and non-toxic
- High bulk damage threshold
- Can be superpolished to <1 Avg RMS
- AR coatings available

YAG Specifications:

Transmission:

> 80% over the spectrum

Purity:

> 99%

Index of Refraction:

1.82 Material:

Low internal stress, non-toxic, homogeneous, high bulk damage threshold

Form:

Synthetic, Cubic, Crystal

Mechanical:

Can be superpolished and achieve <1 Avg RMS

AR Coatings Available:

Yes

Applications

MPF’s YAG UHV viewports are ideal for:

High-energy laser systems

LEDs and white light optics

Spectroscopy and range-finding lasers

Medical devices (ophthalmology, dermatology)

Materials processing

Cutting-edge physics research

Engineered for Precision and Reliability

MPF’s YAG viewports are vacuum-rated from -196°C to 450°C and maintain hermeticity down to 1×10⁻⁹ cc/sec He. We integrate this material into standard vacuum hardware—including Conflat and Quick Flanges—and can deliver viewports ready for installation in your vacuum systems.

Have a unique application? We offer 100% custom designs to meet the specific demands of your system.

Ready to Integrate YAG Into Your System?

Let MPF’s Engineering Design Team help bring your ideas to life. Whether you need standard components or a fully custom solution, we’re ready to support your RFQ.