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Laser Beam Delivery Components

Reflective Beam Expander/Collimator

Overview

The Reflective Beam Expander/Collimator (RBEC) is designed specifically for handling broadband CO₂ laser systems, where traditional lens-based expanders suffer from chromatic dispersion. Utilizing a Z-fold optical path with gimbal-mounted reflective optics, the RBEC provides consistent expansion or reduction across all wavelengths. Available in the 38 mm and 50 mm series, it features modular housing, easy access for alignment, and direct-cooled reflective optics. With water-cooled options capable of handling up to 15 kW, this unit is built for integration into demanding industrial systems that require high power handling and precise optical control.

Available Product Series
  • 38mm Series
  • 50mm Series
Compatible Laser Types
  • Collimated Input

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Laser Beam Delivery
Applications
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Industrial Applications

Reflective beam expanders (also known as reflective beam collimators or mirror expanders) are essential for applications where laser wavelength flexibility and thermal stability matter most. In CO₂ laser cutting and welding systems, the RBEC enables precise beam control without chromatic aberration. In research and metrology, its stable, wavelength-agnostic optical path makes it ideal for multi-wavelength experiments and diagnostic systems. Job shops and OEM developers also use RBECs to standardize beam delivery across systems using varied CO₂ sources.

Product selection guidance
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Selecting Part Numbers

Follow the steps below to choose the correct RBEC part number for your application:

  1. Choose the Aperture Size
    Select based on your system’s beam diameter and mechanical interface:

    • 38mm Series – compact and lightweight for smaller beam paths or tight setups

    • 50mm Series – larger clear aperture for high-power or large-mode applications

  2. Select the Expansion Ratio
    Available expansion ratios:

    • 1x – no expansion; acts as a collimator

    • 1.4x, 1.85x, 2x, 3x, 4x – expands the beam for improved focusability or reduced divergence

  3. Determine Cooling Requirements (50mm Series only)
    For high-power applications or continuous operation:

    • W = Water-cooled

    • N = Non-cooled (passive)

Accessories
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Product Configurations

RBEC-38

38mm Series

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RBEC-50

50mm Series

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Accessories

Alignment Targets

Alignment targets make laser beam setup and optical alignment fast and repeatable. Available for all Haas LTI beam delivery sizes, they simplify system setup, troubleshooting, and maintenance.

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Product Features

Mirror-Based, Broadband Design

Reflective optics avoid chromatic dispersion and thermal lensing, enabling consistent performance across multiple CO₂ wavelengths.

High-Power Capability Up to 15 kW

Water-cooled models safely handle extreme duty cycles and thermal loads.

Precision Built and Easy to Align

Features a Z-fold rail system with two 2-axis gimbals and one linear mirror mount for fast, repeatable alignment without disturbing system configuration.

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    RBEC-38-1.0-10.6 RBEC-38-1.4-10.6 RBEC-38-1.85-10.6 RBEC-38-2.0-10.6 RBEC-50-1.0-W-10.6 RBEC-50-1.0-N-10.6 RBEC-50-2.0-W-10.6 RBEC-50-2.0-N-10.6 RBEC-50-3.0-W-10.6 RBEC-50-3.0-N-10.6 RBEC-50-4.0-W-10.6 RBEC-50-4.0-N-10.6