Buying External-cavity Diode Lasers
External-cavity diode lasers (ECDLs) feature single-frequency operation with very low emission linewidth and wideband wavelength tuning. They are used in applications such as telecom transmitters and laser absorption spectroscopy, where precise and stable wavelength control is required.
Making Good Purchase Decisions
As the most professional photonics purchasing portal, RP Photonics helps you to not only to find all relevant suppliers (not limited to our advertisers), but also to make good purchasing decisions.
NEW: Structured Decision Process
Purchasing involves a lot of responsibility. We recommend that you apply best practice by using the following structured process: Go through the following expandable sections, complete the form and finally come to a purchase decision. You can then print that to a PDF for documenting the process.
Our article on best practices for purchasing and another one explaining this tool give you valuable insights.
Suppliers for External-cavity Diode Lasers
21 suppliers for external-cavity diode lasers (ECDL) are listed in the RP Photonics Buyer's Guide, out of which 6 present their product descriptions. Both manufacturers and distributors can be registered.
Suppliers with Advertising Package
presenting their product descriptions
 THINKING BEYOND Eagleyard Photonics GmbHRudower Chaussee 29 12489 Berlin Germany See us at LASER World of Photonics 2025 in Munich, June 24–27 (booth B2.417)! |  Gain Chips are modified Fabry–Pérot laser diodes with an excellent AR coated output facet. While not self-lasing they are intended to be operated in External Cavity Diode Laser setups (ECDL), such as in Littman or Littrow configuration. With external feedback they reveal narrow single frequency operation in combination with superior tuning capabilities. Product-specific web page |
 Pioneering Photonics Alpes Lasers SAAvenue des Pâquiers 1 2072 St-Blaise Switzerland See us at LASER World of Photonics 2025 in Munich, June 24–27 (booth A2.547)! |  Alpes Lasers offers mid-IR external cavity lasers with wavelengths spanning 4.3 to 14 μm. External cavity kits with integrated laser control electronics are also available. These are Fabry–Pérot lasers designed for maximum width of the gain profile. Product-specific web page |
 The lasers you need. From the people you trust. Our experience, your advantage. RPMC Lasers, Inc.8495 Veterans Memorial Pkwy O’Fallon MO 63366 United States |  Serving North America, RPMC Lasers offers external cavity VBG wavelengths in the red to NIR spectral regions from approximately 633 nm to 1064 nm, eliminating wavelength drift and providing exceptionally high spectral purity with multiple output power options available for most wavelengths. Our innovative VBG structure achieves narrow linewidth and consistent wavelength output, ensuring effective wavelength control even with changing temperature and aging, while delivering high-quality output with low noise driven by VBG technology. Customizable, compact designs come in TO-can, butterfly, and other fiber-coupled component and OEM packages, with lightweight, robust, hermetically sealed options and optional fiber coupling for long-term reliability and ease of integration in sensing and telecom applications. Let RPMC help you find the right laser today! Product-specific web page |
 Enable What's Next DRS Daylight Solutions Inc.16465 Via Esprillo San Diego, CA 92127 United States See us at LASER World of Photonics 2025 in Munich, June 24–27 (booth A2.237)! |  The Stretto is a high precision tunable external-cavity diode laser, available for narrow linewidth emission from ultraviolet to infrared. Being designed for seamless OEM integration and efficient volume production scaling, Stretto is a go-to laser solution for industries requiring high precision and reliability. Product-specific web page |
 all wavelengths. TOPTICA Photonics AGLochhamer Schlag 19 82166 Gräfelfing Germany See us at LASER World of Photonics 2025 in Munich, June 24–27 (booth B2.103) and CLEO 2025 in Long Beach (CA), USA, May 4–9 (booth 217)! |  TOPTICA offers ECDLs with unique tuning capabilities. The CTL lasers tune up to 110 nm without any mode hop. Finding resonances of quantum dots or micro resonators as well as spectroscopy has never been easier. TOPTICA continues to provide the DL pro, which is now available at even more wavelengths and is well suited for laser cooling and many other AMO experiments. Product-specific web page |
 Hedwig-Jahnow-Str. 12 35037 Marburg Germany See us at LASER World of Photonics 2025 in Munich, June 24–27 (booth B2.235) and CLEO 2025 in Long Beach (CA), USA, May 4–9 (booth 412)! |  The Micron laser is a mode-hop free tunable external cavity laser for output powers of up to 300 mW. Versions with emission wavelengths between 638 nm and 1700 nm are available. Product-specific web page |
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Other Suppliers
| APEX Technologies France |
| Crisel Instruments s.r.l. Italy |
| ELUXI Ltd. United Kingdom |
| GMP SA, Büro Zürich Switzerland |
| Lahat Technologies Ltd Israel |
| LEOS Instruments s.r.l. Italy |
| MOG Laboratories Pty Ltd Australia |
| Mountain Photonics GmbH Germany |
| Nano-Giga France |
| Newport Corporation United States |
| Opton Laser International France |
| Power Technology Inc. United States |
| Redfern Integrated Optics United States |
| RIO Lasers, an OptaSense business United States |
| von Gegerfelt Photonics Germany |
