Skip to main content

Laser Beam Delivery Components

Circular Polarizer

Overview

The Circular Polarizer System is designed to convert linearly polarized laser beams into circular polarization using a quarter-wave plate. This is essential in applications where polarization-sensitive effects—like back reflections, material anisotropy, or inconsistent coupling—need to be minimized. The compact housing allows for easy integration into beam delivery systems, and it’s available in 19 mm, 25 mm, and 38 mm aperture sizes.

Available Product Series
  • 19mm Series
  • 25mm Series
  • 38mm Series
Compatible Laser Types
  • Collimated Input

Select the part number you need and click the button below to request a quote and more information.

Request Quotation
Laser Beam Delivery
Applications
More infomation about use cases and industries served
Learn More

Applications

Circular polarizers are commonly used in:

  • Laser Material Processing – Especially for cutting or welding reflective metals, where circular polarization helps reduce undesired reflections or polarization-dependent inconsistencies.

  • Optical Isolation – When combined with other polarization optics, circular polarization can help suppress back reflections into the laser cavity.

  • Polarization Control – For fine-tuning the polarization state of the beam in sensitive experiments or manufacturing setups.

  • Scientific Research – In optical test benches, polarization-sensitive detection, or interferometry.

Related terms: quarter-wave plate assembly, polarization modifier, circular polarization converter, laser polarization optics.

Product selection guidance
Get help selecting the correct part number for your application
Learn More

Selecting a Part Number

Haas circular polarizers are defined by three parameters:

  1. Aperture Size
    Available in 19 mm, 25 mm, and 38 mm series.
    Choose the aperture based on beam diameter, with a 1.5× margin recommended to prevent clipping.

  2. Wavelength
    Select the wavelength that matches the rest of your system. Options include 10.6µm, 10.2µm and 9.4µm.

  3. Mounting Interface
    Multiple mounting options are available, including Haas standard flanges and third-party-compatible interfaces. Choose the flange that fits your existing beam delivery system or optical setup.

Product Configurations

CPU-19

19mm Series

Configure Now

Select part numbers and download CAD files

CPU-25

25mm Series

Configure Now

Select part numbers and download CAD files

CPU-38

38mm Series

Configure Now

Select part numbers and download CAD files

Product Features

Quarter-Wave Plate Based Conversion

Precisely aligned waveplate converts linear to circular polarization with minimal loss.

Compact, Rigid Housing

CNC-machined housing allows easy inline integration and long-term stability.

Factory Pre-Aligned

No manual alignment required—each unit is pre-tuned for consistent performance out of the box.

Request a quotation and lead times for parts, or ask questions about our products & services
Request Quotation

Related Products

Beam Splitter

Beam splitters are for directing or sampling part of a laser beam to a second path, sensor, or diagnostic tool. Ideal for process monitoring and multi-station setups.

View Product

Shutter

Fast-acting laser shutters with optional alignment diode allowing you to terminate the beam quickly. Water-cooled options for high power applications.

View Product

High Power Laser Beam Dump

High-performance beam dumps safely absorb greater than 500 watts of laser power. Currently available in 38mm and 50mm aperture sizes.

View Product

PHA Series

Basic process head designed for low-power applications using a free-space collimated laser source. Compact and straightforward for general use.

View Product

Clamp Mount Beam Tubes

Clamp-mount beam tubes offer a balance of strength and convenience—semi-structural, easy to assemble, and ideal for systems needing both rigidity and quick access.

View Product

Standard Laser Beam Dump

Standard beam dumps come with either water or air cooling and can handle up to 500 watts.

View Product

Quick Mount Beam Tubes

Quick-mount beam tubes are ideal for fast changeovers and modular setups. They allow slight misalignment between components, and make maintenance and assembly simple and easy.

View Product

PHF Series

Basic process head designed for low-power applications using a fiber-collimated laser source. Compact and straightforward for general use.

View Product

IR Laser Alignment Cards

Thermal sensitive CO2 alignment cards are used to align optical components to the laser beam axis.

View Product

Telescopic Beam Tubes: Spring Bellows

Designed for continuous motion and Z-axis adjustments. The supported spring design prevents sagging and keeps the beam path enclosed during motorized travel.

View Product

Mirrors

Our mirrors redirect laser beams at 45° with near-100% reflectivity. Options include visible-transmissive mirrors with AR coatings for camera integration. Specs available to guide selection.

View Optics

Lenses

Discover our high-performance focus lenses, from meniscus to plano-convex, built for precision and durability. Specs on wavelength, material, size, and coatings are available in the More Info section.

View Optics
    CPU-19-10.6-CFB CPU-19-10.6-CJB CPU-19-10.6-H CPU-19-10.6-SYN CPU-19-10.2-CFB CPU-19-10.2-CJB CPU-19-10.2-H CPU-19-10.2-SYN CPU-19-9.4-CFB CPU-19-9.4-CJB CPU-19-9.4-H CPU-19-9.4-SYN CPU-25-10.6-CFB CPU-25-10.6-CJB CPU-25-10.6-H CPU-25-10.6-SYN CPU-25-10.6 CPU-25-10.2-CFB CPU-25-10.2-CJB CPU-25-10.2-H CPU-25-10.2-SYN CPU-25-10.2 CPU-25-9.4-CFB CPU-25-9.4-CJB CPU-25-9.4-H CPU-25-9.4-SYN CPU-25-9.4 CPU-38-10.6-CFB CPU-38-10.6-CJB CPU-38-10.6-SYN CPU-38-10.6 CPU-38-10.2-CFB CPU-38-10.2-CJB CPU-38-10.2-SYN CPU-38-10.2 CPU-38-9.4-CFB CPU-38-9.4-CJB CPU-38-9.4-SYN CPU-38-9.4