Collection: Polarizing Beamsplitter Cube

Key Specifications of the Polarizing Beamsplitter Cube

Size and Material

Polarizing Beamsplitter Cubes are available in various sizes, ranging from 5 mm to 2 inches (50.8 mm).

• Common sizes include 5 mm, 10 mm, 1/2" (12.7 mm), 20 mm, 1" (25.4 mm), and 2" (50.8 mm).
• The cubes are typically made from high-quality glass materials such as N-SF1, H-ZF3, BK7, or synthetic fused silica.

Wavelength Ranges

These cubes are offered with different wavelength ranges to accommodate various applications:

• Wavelength ranges include 420 - 680 nm, 620 - 1000 nm, 700 - 1300 nm, 900 - 1300 nm, and 1200 - 1600 nm.

Polarization and Extinction Ratio

• The cubes reflect s-polarized light by 90° while allowing p-polarized light to pass through.
• They offer high extinction ratios, typically greater than 1000:1 for the transmitted beam, ensuring minimal cross-polarization leakage.

Coatings and Surface Quality

• The internal face of the cube is coated with a dielectric multi-layer polarizing coating.
• The four surfaces of the cube are often coated with multi-layer anti-reflection (AR) coatings to minimize reflections and reduce glare and interference.

Mounting and Alignment

• These cubes are designed for easy mounting and alignment, with options for cage cubes and other mounting platforms.
• They feature engraved dots or arrows to indicate the orientation of the beamsplitting coating.

A Study Case for Selecting the Component

When selecting a Polarizing Beamsplitter Cube, several factors need to be considered:

• Wavelength Range: Ensure the cube's coating matches the wavelength range of your application. For example, if you are working with a laser at 1064 nm, you would need a cube with a coating optimized for this wavelength.
• Size and Material: Choose a size that fits your optical setup and ensure the material is suitable for your application. For high-power applications, materials with high damage thresholds are essential.
• Extinction Ratio: If high polarization purity is required, select a cube with a high extinction ratio. For most applications, an extinction ratio greater than 1000:1 is sufficient.
• Mounting Compatibility: Ensure the cube is compatible with your mounting system. Options like cage cubes or C-mounts can simplify the setup.

Typical Applications and Why the Component is Used

Laser Applications

Polarizing Beamsplitter Cubes are widely used in laser systems to separate and manipulate polarized light. They are particularly useful in laser cavities, beam steering, and polarization control.

Photonics Instrumentation

In photonics instrumentation, these cubes are used to analyze and manipulate the polarization states of light. They are essential in setups involving polarized light sources, such as LEDs or lasers.

Semiconductor Manufacturing

In semiconductor manufacturing, polarizing beamsplitters are used in various inspection and processing tools. They help in controlling the polarization of light to enhance the accuracy and efficiency of these processes.

Optical Microscopy

In optical microscopy, polarizing beamsplitters can be used to enhance image contrast and reduce glare. They are particularly useful in polarized light microscopy techniques.The Polarizing Beamsplitter Cube is a versatile and critical component in many optical systems, offering precise control over light polarization and ensuring high efficiency and accuracy in various applications.