Buying Beam Expanders
Beam expanders increase the beam radius of a laser beam, facilitating long-distance transmission or allowing the beam to enter optical devices properly. They operate similarly to telescopes and can have a fixed or variable expansion ratio, making them versatile tools in laser optics.
Making Good Purchase Decisions
RP Photonics helps to not only to find all relevant suppliers, but also to make good purchase decisions:
Learning Resources

With its comprehensive resources, RP Photonics helps you to well prepare purchase decisions:
- Encyclopedia article: beam expanders
- Related articles: collimated beams, laser beams
Aspects to Consider Before Buying
Some aspects to consider before buying beam expanders: expansion ratio, range of allowed input beam radii, optical quality, astigmatism, alignment and mounting options, power handling capacity, thermal stability, compatibility with laser systems, ease of integration, size and weight.
For responsible purchase decisions, we recommend applying good practices.
Find Suppliers for Beam Expanders
49 suppliers for beam expanders are listed in the RP Photonics Buyer's Guide, out of which 7 present their product descriptions. Both manufacturers and distributors can be registered.
Suppliers with Advertising Package presenting their product descriptions | |
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![]() Bringing quality into focus Knight Optical (USA) LLC1130 Ten Rod Road Suite D102 North Kingstown Rhode Island 02852 United States |
Available in singlet, doublet (positive and negative focal lengths) and triplet varieties, Knight Optical can supply customised beam expanders for a range of laser-based, cutting-edge projects. Whether your application works in the ultraviolet (UV), visible, near-infrared (NIR), mid-infrared (MIR) or far-infrared (FIR) spectrum, opting for our custom-made components allows you to specify suitable substrates for your required wavelength. |
![]() The Future Depends on Optics Edmund Optics101 East Gloucester Pike Barrington, NJ 08007 United States | ![]() Edmund Optics has a variety of beam expanders, including devices for different wavelength regions (e.g. Nd:YAG and CO2), rotating or non-rotating optics for divergence adjustment and research-grade devices. |
![]() Your Custom Optics Expert Shanghai Optics Inc.425 Main St Suite 2E Metuchen, NJ 08840 United States | ![]() Shanghai Optics Inc's custom beam expanders are used in many applications such as laser ranging, laser illumination, interferometry, etc. In high-power laser systems, beam expanders are used increase the beam area without significantly affecting the total laser energy. This results in a reduction of the laser power density which reduce the risk of damaging the coatings and optical materials of optical components. In a laser ranging system, a beam expander is used to minimize the laser divergence, resulting in a smaller collimated beam at a long distance. |
![]() (4Lasers) Mokslininku str. 6B 08412 Vilnius Lithuania | ![]() Optogama designs and manufactures laser beam expanders, beam reducers and divergence compensators which are used to increase or decrease laser beam diameter and control beam divergence:
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![]() P. O. Box 3002 Vernon, CT 06066 United States | ![]() Photonic Devices' precision Galilean beam expanders have been sold globally for over 20 years and include an extensive number of standard models. These multi-element beam expanders have been computer-designed to provide excellent wavefront quality with minimum beam deformation. All lens elements are air spaced and the majority of models have variable air spacing for collimation adjustment. All lens surfaces have multilayer antireflection coatings, with power handling capabilities over 1 kW (> 200 W for beam expanders operating at 10.6 microns). |
![]() 1100 US-22 North Plainfield, NJ 07060 United States |
Beam expanders are optical devices which increases the diameter of the input beam to produce a larger output. Used with collimated light, they have important applications in remote sensing, interferometry, and laser scanning. |
![]() Your reliable partner for photonics innovations! EKSMA Optics, UABDvarcioniu St. 2B LT-10233 Vilnius Lithuania | ![]() Standard off-the-shelf Galilean type zoom beam expanders and compact beam expanders. Our engineers can design a custom beam expander solution to fit your application. |
Other Suppliers | |
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Altechna UAB Lithuania | |
asphericon Germany | |
AZURE Photonics Co., Ltd. China | |
BeamQ Lasers United States | |
Beijing RealLight Technology Co. Ltd. China | |
CASIX Inc. China | |
Couriertronics United States | |
CVI Laser Optics United States | |
Electro Optical Components, Inc. United States | |
ELUXI Ltd. United Kingdom | |
GiAi photonics Co., Ltd China | |
GMP SA, Büro Zürich Switzerland | |
Holmarc Opto-Mechatronics India | |
ios Optics United States | |
Jenoptik Optical Systems GmbH Germany | |
Lahat Technologies Ltd Israel | |
Lano Photonics Co., Ltd. China | |
Laser Components GmbH Germany | |
Laser S.O.S. Ltd. United Kingdom | |
Laser Sources Ltd. United Kingdom | |
Laserglow Technologies Canada M6C 1C | |
Lytid SAS France | |
Micro Laser Systems, Inc. United States | |
NaKu Technology Co., Ltd China | |
Optical Fiber Packaging Limited United Kingdom | |
Optical Surfaces United Kingdom | |
Optics and Allied Engineering Pvt. Ltd. India | |
OptoCity United States | |
OptoSigma United States | |
Picotronic GmbH Germany | |
PreciSe Hyper-iMage Optics Ltd. China | |
Rainbow Research Optics, Inc. United States | |
Sill Optics GmbH & Co. KG Germany | |
Sintec Optronics Pte Ltd (HQ) Singapore | |
Space Optics Research Labs United States | |
STANDA Ltd. Lithuania | |
Topag Lasertechnik GmbH Germany | |
ULO Optics Ltd. United Kingdom | |
Ultra Photonics China | |
VM-TIM GmbH Germany | |
VONJAN Technology GmbH Germany | |
Wavelength Opto-Electronic (S) Pte Ltd Singapore |