Buyer's Guide … the one with the Encyclopedia!

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Buying Single-frequency Lasers

Top-level product category: icon lasers and laser amplifiers

More general product categories: narrow-linewidth lasers

More specific product categories: narrow-linewidth lasers, nonplanar ring oscillators

Related product categories: optical frequency standards, photon Doppler velocimetry equipment

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.

1. Understand the technical background

It is important to sufficiently understand the technology before buying.

Use the comprehensive learning resources of RP Photonics:

encyclopedia article single-frequency lasers single-frequency operation linewidth narrow-linewidth lasers distributed Bragg reflector lasers injection locking stabilization of lasers

If you need personal help, contact RP Photonics to get technical consultancy.

2. Define your requirements

It is essential to fully understand and clearly define your requirements before you buy.

We recommend that you develop a list of clear specifications according to your specific needs, against which you can later check the suitability of found product offers:

To help you, we have already listed some aspects we recommend you consider when buying single-frequency lasers. Of course, there may be other aspects that are relevant to your specific case.

This list is for your own preparation, and can later (possibly in modified form) be used for quotation requests to suppliers.

Otherwise, you will need to talk to your technical colleagues.

If you cannot sufficiently clarify your requirements, you may want to get technical consultancy from RP Photonics.

You find these buttons in the supplier list below or under "3. Find suitable suppliers".

3. Find suitable suppliers

We suggest three steps:

  • Below, you can find our list of suppliers for single-frequency lasers. Use the checkboxes to mark possibly suitable suppliers.
  • The selected suppliers will appear below this list, along with your list of specifications. You can then indicate which specifications they meet according to your research. (You should finalize your specifications before doing this.)
  • Based on the results, you can finally choose a supplier that is hopefully a good enough fit.

Selected suppliers:

(none so far)

Decision

The most suitable supplier you found:

Comments, e.g. reasons for your choice, or things which still need to be checked:

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
Profile page  Website  
single-frequency lasers

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 GmbH
Bunsenstr. 5
82152 Martinsried
Germany
Profile page  Website  

See the company profile page for additional contact information.

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)!

single-frequency lasers

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 Communications
Head Office
147 Hymus Boulevard
Montreal, Quebec H9R 1E9
Canada
Profile page  Website  
single-frequency lasers

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 Photonics
3 West Pier Business Campus
Dun Laoghaire
Dublin A96 A621
Ireland
Profile page  Website  
single-frequency lasers

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 Photonics
Bregnerødvej 144
3460 Birkerød
Denmark
Profile page  Website  

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)!

single-frequency lasers

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
HÜBNER Photonics GmbH
Wilhelmine-Reichard Strasse 6
34123 Kassel
Germany
Profile page  Website  

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)!

single-frequency lasers

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 brands
2 rue Paul Sabatier
22300 Lannion
France
Profile page  Website  

See us at LASER World of Photonics 2025 in Munich, June 24–27 (booth A2.341)!

single-frequency lasers

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 Photonics
2700 E. Bilby Rd.
Tucson, AZ 85706
United States
Profile page  Website  

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)!

single-frequency lasers

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
CNI Laser
No. 888 Jinhu Road
High-tech Zone, Changchun 130103
China
Profile page  Website  

See us at LASER World of Photonics 2025 in Munich, June 24–27 (booth A2.261)!

single-frequency lasers

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 AG
Lochhamer Schlag 19
82166 Gräfelfing
Germany
Profile page  Website  

See the company profile page for additional contact information.

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)!

single-frequency lasers

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 GmbH
Bertha-von-Suttner-Str. 5
37085 Göttingen
Germany
Profile page  Website  
single-frequency lasers

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
Aerodiode
Rue François Mitterrand
Institut d'Optique d'Aquitaine
33400 Talence
France
Profile page  Website  

See us at CLEO 2025 in Long Beach (CA), USA, May 4–9 (booth 327)!

single-frequency lasers

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 Ltd
Kauhakorvenkatu 53 B
33710 Tampere
Finland
Profile page  Website  

See us at LASER World of Photonics 2025 in Munich, June 24–27 (booth B2.441)!

single-frequency lasers

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:

  • Narrow free-running linewidths: < 100 Hz (instantaneous), < 10 kHz (10 μs), < 100 kHz (100 μs)
  • Sub-Hz linewidth achievable by locking to a frequency comb
  • Minimal amplified spontaneous emission (ASE) background (SNR > 70 dB) due to VECSEL technology

A Tradition of High Power Photonics Leadership

QPC Lasers Inc.
15632 Roxford Street
Sylmar, CA 91342
United States
Profile page  Website  
single-frequency lasers

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
Profile page  Website  
Alnair Labs
Japan
Arktis Laser Inc.
Canada
Profile page  Website  
AZURE Photonics Co., Ltd.
China
Profile page  Website  
Azurlight Systems
France
Profile page  Website  
Calmar Laser
United States
Profile page  Website  
chilas B. V.
Netherlands
CryLaS GmbH
Germany
Profile page  Website  
Crystalaser
United States
Profile page  Website  
Deeplight SA
Switzerland
ELUXI Ltd.
United Kingdom
Profile page  Website  
Evolase Oy
Finland
Frankfurt Laser Company
Germany
Profile page  Website  
Holo-Spectra, Inc.
United States
Profile page  Website  
HT Laser UG
Germany
Profile page  Website  
IL Photonics
Israel
Profile page  Website  
Innovative Photonic Solutions
United States
Integrated Optics, Ltd.
Lithuania
Profile page  Website  

See the company profile page for additional contact information.

KLASTECH GmbH
Germany
Lahat Technologies Ltd
Israel
Profile page  Website  
Qingdao Lasence Co., Ltd
China
Laserand, Inc.
Canada
Laserglow Technologies
Canada M6C 1C
Profile page  Website  
Lasermate Group, Inc.
United States
LASOS Lasertechnik GmbH
Germany
LEOS Instruments s.r.l.
Italy
Profile page  Website  
Lightelligence, Inc.
United States
Profile page  Website  
M Squared Lasers Ltd.
United Kingdom
Metalaser
China
MOG Laboratories Pty Ltd
Australia
Profile page  Website  
Mountain Photonics GmbH
Germany
Nano-Giga
France
Profile page  Website  
neoLASE GmbH
Germany
Profile page  Website  
Nanguang Hi-Tech (Xiamen) Laser Co., Ltd
China
NP Photonics, Inc.
United States
Opto Enginee LLC
United States
Profile page  Website  
Optoprim Germany GmbH
Germany
Profile page  Website  
Optromix, Inc.
United States
Profile page  Website  
Orbits Lightwave, Inc.
United States
Oxide Corporation
Japan
PolarOnyx
United States
Power Technology Inc.
United States
QPhotonics, LLC
United States
Profile page  Website  
Redfern Integrated Optics
United States
RGB Photonics
Germany
Profile page  Website  
RIO Lasers, an OptaSense business
United States
Profile page  Website  
Skylark Lasers
United Kingdom
Profile page  Website  
Soliton Laser- und Messtechnik GmbH
Germany
STANDA Ltd.
Lithuania
von Gegerfelt Photonics
Germany
Profile page  Website  
Xiton Photonics
Germany
YSL Photonics
China
Profile page  Website  

If any displayed information is incorrect (e.g., a listed supplier does not offer such products) or legally problematic, please notify RP Photonics so that the problem can be solved.



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