Buying Single-frequency Lasers
Single-frequency lasers produce light with a very narrow linewidth, suitable for applications requiring high frequency stability and no mode hops. They are used in interferometry, laser spectroscopy, and optical communications. High-power single-frequency lasers are also employed in coherent beam combining techniques.
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 Single-frequency Lasers
67 suppliers for single-frequency lasers are listed in the RP Photonics Buyer's Guide, out of which 14 present their product descriptions. Both manufacturers and distributors can be registered.
Suppliers with Advertising Package
presenting their product descriptions
![]() 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 single longitudinal mode (SLM) lasers from UV to SWIR (≈266 nm – 2300 nm), delivering absolute spectral purity and precise wavelength control for spectroscopy, metrology, and telecom applications. Advanced stabilization via SLM DPSS, HeNe, DFB, and VBG diodes, plus wavelength combiners, ensures minimal frequency drift with temperature/current control and integrated TEC for peak single-frequency performance. Tailored OEM and turnkey solutions – free-space or fiber-coupled – feature compact, rugged designs for lab, industrial, or portable use, customizable to meet specialized scientific and research demands. Let RPMC help you find the right SLM laser today! Product-specific web page |
![]() Precision in photonics. Together we shape a sustainable future. Menlo Systems GmbHBunsenstr. 5 82152 Martinsried Germany See us at LASER World of Photonics 2025 in Munich, June 24–27 (booth B2.407) and CLEO 2025 in Long Beach (CA), USA, May 4–9 (booth 305)! | ![]() Menlo Systems offers ultrastable frequency-stabilized lasers at basically any wavelength. We supply fully characterized systems with linewidths < 1 Hz and Allan deviations of 2 × 10−15 (in 1 s) as well as modules and components allowing for state-of-the-art systems tailored to your requirements. Product-specific web page |
![]() Helping our customers reach their research @ commercial goals for over 45 years MPB CommunicationsHead Office 147 Hymus Boulevard Montreal, Quebec H9R 1E9 Canada | ![]() MPBC line of single frequency lasers provide low phase and intensity noise, long coherence length and high reliability for applications in metrology, quantum technologies and atomic clocks. MPBC provides single-frequency (SF) Seed fiber lasers with a linewidth < 50 kHz,and SF lasers with a linewidth < 100 kHz. ● The SF Seed wavelength range covers 910 to 1950 nm and provides up to 50 mW of output power at selected wavelengths. ● The SF Visible wavelength range covers 460 to 790 nm and provides up to 5 W of output power at selected wavelengths. Higher powers up to 10 W are available from 532 to 671 nm. ● The NIR SF wavelength range covers 920 to 1900 nm with a fiber-coupled output power up to 30 W. Product-specific web page |
![]() Laser Diodes. Redefined. Eblana Photonics3 West Pier Business Campus Dun Laoghaire Dublin A96 A621 Ireland | ![]() Eblana Photonics Discrete-Mode technology platform delivers unrivaled wavelength uniformity and stability which is critical for many scientific and industrial applications. Eblana’s DM laser exhibit high SMSR and excellent tuning performance over a wide wavelength range, with products available from 650 nm – 12 μm. Product-specific web page |
![]() Solutions for Innovators NKT PhotonicsBregnerødvej 144 3460 Birkerød Denmark See us at LASER World of Photonics 2025 in Munich, June 24–27 (booth B2.219) and CLEO 2025 in Long Beach (CA), USA, May 4–9 (booth 234)! | ![]() Our Koheras narrow linewidth, single-frequency fiber lasers are ultra-low noise sources. We have based these lasers on a DFB design to give you a robust and reliable operation. Koheras offers unprecedented low phase and intensity noise levels at rubidium, strontium, barium, and ytterbium wavelengths. It has high stability and mode-hop-free inherent single-frequency output – even when exposed to changing environmental conditions. Product-specific web page |
![]() Wilhelmine-Reichard Strasse 6 34123 Kassel Germany See us at LASER World of Photonics 2025 in Munich, June 24–27 (booth B2.217) and CLEO 2025 in Long Beach (CA), USA, May 4–9 (booth 137)! | ![]() HÜBNER Photonics offer single frequency lasers based on diode pumped solid state technology (DPSS) in the Cobolt 04-01, 05-01 and 08-01 Series. In addition to the single frequency, all lasers have excellent wavelength stability and accuracy as well as power stability. Ideal for any application needing a highly coherent light source. Product-specific web page |
![]() The specialist in laser technologies Lumibird – Quantel, Keopsys, Convergent, Continuum brands2 rue Paul Sabatier 22300 Lannion France See us at LASER World of Photonics 2025 in Munich, June 24–27 (booth A2.341)! | ![]() With the CVFL, CYFL and CEFL kilo models, Lumibird offers CW fiber lasers with very narrow linewidth down to 1 kHz. These single frequency lasers emits at 1054/1083 nm for the ytterbium version, in the 1.5-µm range for the erbium version and at frequency converted wavelengths for the CVFL model. These lasers are specifically designed for applications which require high precision such as LIDAR, atomic spectroscopy, or atom cooling. Product-specific web page |
![]() Innovative and Reliable AdValue Photonics2700 E. Bilby Rd. Tucson, AZ 85706 United States See us at LASER World of Photonics 2025 in Munich, June 24–27 (booth A2.112) and CLEO 2025 in Long Beach (CA), USA, May 4–9 (booth 118)! | ![]() AdValue Photonics has the AP-SF single-frequency fiber laser emitting in the 2-μm wavelength region with a linewidth around 10 kHz. The AP-SF1 is an amplified version with 5 W output power. Both come with a turn-key benchtop housing. Product-specific web page |
![]() No. 888 Jinhu Road High-tech Zone, Changchun 130103 China See us at LASER World of Photonics 2025 in Munich, June 24–27 (booth A2.261)! | ![]() CNI offers single-frequency lasers with wavelengths from the UV to the infrared region. They are widely used in many scientific and industrial applications. The spectral linewidth can be less than 0.00001 nm. CNI successfully provided custom made lasers for 670.776 nm, 589.159 nm, 589.756 nm and even Q-switched SLM lasers to customers. The frequency drift over 8 hours was <200 MHz. 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's single-frequency diode lasers employ state-of-the-art diode technology to achieve the highest single-frequency output power of any direct diode-based system. For example, the TopMode 405 nm model offers as much as 100 mW – an industry record! Product-specific web page |
![]() Lasers, Optics, Electronics. Made in Germany. ALPHALAS GmbHBertha-von-Suttner-Str. 5 37085 Göttingen Germany | ![]() ALPHALAS offers CW or pulsed single-frequency lasers (single longitudinal mode) with TEM00 beam profile at most of the standard laser wavelengths. Various proprietary and standard technologies including monolithic non-planar ring oscillators (NPRO), DFB and unidirectional ring laser designs are used to achieve stable single-frequency operation with a very low intensity noise. The output power in CW mode ranges from several tens of mW to > 10 W at 1030 nm and 1064 nm. The single-frequency Q-switched lasers offer the unique combination of very narrow spectrum (transform-limited pulses) with very low amplitude noise due to the absence of mode beating. Applications include high-resolution spectroscopy, interferometry, holography, optical metrology, meteorology, efficient Brillouin- and Raman-shifted generation, Raman spectroscopy and optical trapping, to mention just a few of them. Product-specific web page |
![]() Rue François Mitterrand Institut d'Optique d'Aquitaine 33400 Talence France See us at CLEO 2025 in Long Beach (CA), USA, May 4–9 (booth 327)! | ![]() SHIPS TODAY: AeroDIODE offers fiber-coupled DFB laser diodes (1030 nm DFB, 1064 nm DFB, 1310 nm DFB, 1550 nm DFB or many other devices at a wavelength between 1250 nm and 1650 nm). They are offered as stock items or associated with a CW laser diode driver or pulsed laser diode driver. They are compatible with our high speed nanosecond pulsed drivers or low noise laser diode driver for single frequency emission. Typical narrow linewidth of a few tens of kHz are obtained with our dedicated ultra-low noise driver. See also our tutorial on fiber-coupled laser diodes. Product-specific web page |
![]() High-power & single-frequency VECSELs at 350–2150 nm for quantum technology Vexlum LtdKauhakorvenkatu 53 B 33710 Tampere Finland See us at LASER World of Photonics 2025 in Munich, June 24–27 (booth B2.441)! | ![]() VEXLUM lasers are designed for narrow-linewidth operation, featuring an external cavity configuration with frequency-selecting elements such as a birefringent filter and etalon/EOM. Key specifications include:
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![]() A Tradition of High Power Photonics Leadership QPC Lasers Inc.15632 Roxford Street Sylmar, CA 91342 United States | ![]() QPC Lasers solutions include eye-safe MOPA diode lasers offering peak single-mode powers up to 100 W for applications including automotive LIDAR, Doppler anemometry and free space communications. Product-specific web page |
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Other Suppliers
Aktyvus Photonics Lithuania |
Allied Scientific Pro Canada |
Alnair Labs Japan |
Arktis Laser Inc. Canada |
AZURE Photonics Co., Ltd. China |
Azurlight Systems France |
Calmar Laser United States |
chilas B. V. Netherlands |
CryLaS GmbH Germany |
Crystalaser United States |
Deeplight SA Switzerland |
ELUXI Ltd. United Kingdom |
Evolase Oy Finland |
Frankfurt Laser Company Germany |
Holo-Spectra, Inc. United States |
HT Laser UG Germany |
IL Photonics Israel |
Innovative Photonic Solutions United States |
Integrated Optics, Ltd. Lithuania |
KLASTECH GmbH Germany |
Lahat Technologies Ltd Israel |
Qingdao Lasence Co., Ltd China |
Laserand, Inc. Canada |
Laserglow Technologies Canada M6C 1C |
Lasermate Group, Inc. United States |
LASOS Lasertechnik GmbH Germany |
LEOS Instruments s.r.l. Italy |
Lightelligence, Inc. United States |
M Squared Lasers Ltd. United Kingdom |
Metalaser China |
MOG Laboratories Pty Ltd Australia |
Mountain Photonics GmbH Germany |
Nano-Giga France |
neoLASE GmbH Germany |
Nanguang Hi-Tech (Xiamen) Laser Co., Ltd China |
NP Photonics, Inc. United States |
Opto Enginee LLC United States |
Optoprim Germany GmbH Germany |
Optromix, Inc. United States |
Orbits Lightwave, Inc. United States |
Oxide Corporation Japan |
PolarOnyx United States |
Power Technology Inc. United States |
QPhotonics, LLC United States |
Redfern Integrated Optics United States |
RGB Photonics Germany |
RIO Lasers, an OptaSense business United States |
Skylark Lasers United Kingdom |
Soliton Laser- und Messtechnik GmbH Germany |
STANDA Ltd. Lithuania |
von Gegerfelt Photonics Germany |
Xiton Photonics Germany |
YSL Photonics China |