Buying Sum and Difference Frequency Generators
Nonlinear frequency conversion techniques, such as sum and difference frequency generation, enable the creation of new wavelength components across the infrared, visible, and ultraviolet ranges. These methods are also used to generate terahertz radiation, expanding the versatility of laser sources.
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: sum and difference frequency generation
- Related articles: frequency doubling, frequency tripling, mid-infrared laser sources
Aspects to Consider Before Buying
Some aspects to consider before buying sum and difference frequency generators: wavelength ranges, input power requirements, other input beam parameters, conversion efficiency, thermal stability, alignment precision, environmental resistance, integration with laser systems.
For responsible purchase decisions, we recommend applying good practices.
Find Suppliers for Sum and Difference Frequency Generators
12 suppliers for sum and difference frequency generators are listed in the RP Photonics Buyer's Guide, out of which 5 present their product descriptions. Both manufacturers and distributors can be registered.
Suppliers with Advertising Package presenting their product descriptions | |
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![]() Plauener Straße 163–165 / Haus N 13053 Berlin Germany | ![]() The APE HarmoniXX DFG is designed to extend APE’s product line of wavelength converters into the mid-IR range. It mixes signal and idler output beams of synchronously pumped OPOs and is available for various pump sources. The DFG output wavelength can be changed easily by tuning the OPO signal. It covers a wide wavelength range from 4 μm to >15 μm. |
![]() Your trusted value co-creation partner HC Photonics Corp.F4, No. 2, Technology Rd. V Hsinchu Science Park, Hsinchu 300 Taiwan | ![]() HC Photonics (HCP) offers both commercial off-the-shelf (COTS) and custom PPMgO:LN or PPMgO:LT based sum and difference frequency generators (SFG & DFG) for out wavelengths ranging from 355 nm to 5000 nm. The product family includes bare crystals (bulk and waveguide) and plug-and-play fibered mixers. A reference spec is >2 W at 632 nm from a fibered mixer converting the output of 1064-nm and 1560-nm fiber lasers. Key features:
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![]() Engineering on Your Wavelength Covesion Ltd.Unit F3, Adanac North Adanac Drive Nursling, Southampton SO16 0BT United Kingdom | ![]() Covesion’s MgO:PPLN free space and fiber coupled up- and down-conversion solutions offer exceptional conversion efficiency for generating visible and mid-IR wavelengths through sum and difference frequency generation. We can offer a range of custom free space and fiber coupled solutions suitable for one-off orders to large-volume manufacture with customizable options including:
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![]() Your reliable partner for photonics innovations! EKSMA Optics, UABDvarcioniu St. 2B LT-10233 Vilnius Lithuania | ![]() EKSMA Optics offers various nonlinear crystal materials that can be used for sum frequency generation. |
![]() Your problem is our challenge – flexibility is our standard! Artifex Engineering GmbH & Co KGDortmunder Str. 16–18 26723 Emden Germany | ![]() Artifex Engineering provides finished sum and difference frequency generator crystals for laser applications. Visit our product page for more information. We look forward to your inquiry. |
Other Suppliers | |
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3photon Lithuania | |
Agile Optic GmbH Germany | |
CASIX Inc. China | |
LEOS Instruments s.r.l. Italy | |
Newlight Photonics Inc. Canada | |
nortus Optronic GmbH Germany | |
Topag Lasertechnik GmbH Germany |